Capturing moments was never so easy before digital cameras came into the photography world. Ever since, there has been a big international market dealing with digital cameras. Japan, South Korea and China have been the main players in manufacturing new digital cameras since its inception. Today, no media house can run without digital cameras. Forget media agencies, in our day-to-day life, we have started considering digital camera as a handbag's must-keep item. It has truly given a new definition to the world of photography.
Many kinds of digital cameras with different features are hovering around the market today. And you need to decide on your choices and pick up the right one that fits your clicking needs. You must have already heard a lot about the top brands such as Kodak, Nikon, Canon, Minolta, Sony, Panasonic, Polaroid, Olympus, Fujifilm, HP, Samsung, etc. This article discusses features of famous brands and models of digital cameras to help you select the right one for yourself.
To start your selection process, you must consider whether you are looking for small and compact pocket camera, an advanced camera, a high zoom capability camera, or an SLR camera. These can range from USD 100 to USD 2,000. You will need to take your pick based on your budget and requirements.
What are the features that you should compare between brands while selecting a digital camera? The most important feature is its resolution in mega pixel. In simple language, this figure tells you how much you can expand your picture without parting with its quality. The higher the resolution, the better. But this doesn’t mean that you have to go for the highest available model in the market. Usually people print photos that are sized 4x6 or 5x7 inhes. So for these photo sizes, any camera above 4 mega pixels will deliver great results.
Other feature that you should evaluate is zoom-in capability. Optical zoom and digital zoom are different terms. Optical zoom means actual zoom done by the lenses, while digital zoom simply increases the size of the picture display without increasing any details. In simple terms 3x optical zoom means you can get three times closer picture of the image you see with your eyes. For this reason, optical zoom is better.
The third important feature is compatibility with other devices. Find out if the camera you are going to buy is compatible with your computer, printer, memory card, USB drive, etc. Cameras have inbuilt flash memory but the space is limited, so you would have to buy external memory cards, popularly known as Secure Digital Card (SDC) and Multi Media Card (MMC).
The next important feature is the size of the screen that provides digital display of the image instantly. These screens were the major reason that digital cameras replaced conventional cameras so fast. The screen gives you the ability to review the image and delete the ones you do not like. The LCD digital camera screens are up to 3 inches in width.
The other features that make your camera more convenient include automatic light adjustment, automatic flash, red-eye reduction, file format (TIFF, RAW or JPEG), audio and video capability, image stabilizer, manual controls for aperture and exposure, camera speed, weight and size, body type, battery type (lithium of normal), battery life, picture modes for morning light, day light, cloudy day, etc.
The varieties and features of digital cameras are so many that it becomes really difficult for a first-timer to select one. This is worsened by everyday technological advancements. But all the features mentioned above impart a whole new dimension to photography and they make it easier for even an amateur to click great quality pictures.
This article is under GNU FDL license and can be distributed without any previous authorization from the author. However the author´s name and all the URL´s (links) mentioned in the article and biography must be kept.
http://www.articlenetworks.com/Article/How-To-Select-The-Right-Digital-Camera-For-Yourself/10931
Wednesday, July 11, 2007
Digital Camera Review
There are so many models of digital cameras available in today’s market, that it becomes a rather difficult task to pick the best buy among so many options. Perhaps a few steps should be taken into consideration when choosing the right camera. Will the camera be for daily use, or just for special occasions like birthdays, family reunions, etc. Will the price of the camera make much difference on the pocket?
Assuming that price is not an issue, one should choose a well known major brand camera and if possible, go for the latest model and with the highest number of mega pixels available. The higher the mega pixels, the better the picture will be specially if there is an intention of having photo enlargements quite often. A good quality optical zoom lens will also make a big difference. Choose a camera which comes with a battery that holds a good charge, this way you can enjoy lots of picture taking without having to be worried when the battery charge will come down.
The range of features available make a digital camera very cost effective and more than likely you will be able to find the right camera suited to satisfy your needs.
If you enjoy printing enlargements of your photographs, you may want to pay close attention to the printing size and what is required in mega pixels for you to have good quality results. For you to have an idea of the amount of mega pixels required for most commonly used size of prints, refer to the chart below:
For photos 2x6 inches - 2 mega pixels
For photos 5x7 inches - 3 mega pixels
For photos 8x10 inches -7 mega pixels
For photos 11x14 inches - 14 mega pixels
For photos 16x28 inches - 28 mega pixels
For photos 20x30 inches - 54 megapixels
The handling and design also matters and the lightweight ones are much nicer to carry around. Choose a camera that is user-friendly and make sure that you have a good local technical assistance in case you may run into problems with it.
There are several advantages of having a digital camera instead of the old traditional film camera. First of all, there are no films to be purchased ever. You make take dozens, perhaps hundreds of photos and instantly delete the ones you don’t like, or that did not came well into focus and just keep the best ones. You may load them into your computer album, record them and you may view your favorite photos from you camera or from your television set. Some digital cameras also come with a recording device that allows you to record special events and replay them immediately after recording
Digital cameras take pictures that are stored in digital media. It is possible to select, save or delete photos without any cost whatsoever. The photos are usually stored in media cards into the hundreds, meaning that you can take as many pictures as you like before you run out of space. Also in most digital cameras, the user can view the pictures on the LCD screen, which will allow him to pick the best ones.
No wonder that digital cameras became so popular and accessible item to almost everyone. It became a must to have one nowadays and even cell phone cameras are getting better everyday with noticeable improvements in quality of picture taken. The earlier models of cell phone cameras were somewhat limited as far as picture quality is concerned comparing to the ones we find on today’s market. The mega pixels are increasing constantly and so the quality of the cameras. If a person needs to carry both at the same time, maybe a cell phone with a digital camera built in will be an interesting option to consider
If you have not bought yet a digital camera, maybe this the right time to do so, considering the manufactures are offering so many new models with new features at bargain prices. It is wise to compare the several models among different manufacturers and also the prices from traditional and online stores. Make sure you do your research right, and most likely you will find the digital camera you are looking for.
This article is under GNU FDL license and can be distributed without any previous authorization from the author. However the author´s name and all the URL´s (links) mentioned in the article and biography must be kept.
http://www.articlenetworks.com/Article/Digital-Camera-Review/10930
Assuming that price is not an issue, one should choose a well known major brand camera and if possible, go for the latest model and with the highest number of mega pixels available. The higher the mega pixels, the better the picture will be specially if there is an intention of having photo enlargements quite often. A good quality optical zoom lens will also make a big difference. Choose a camera which comes with a battery that holds a good charge, this way you can enjoy lots of picture taking without having to be worried when the battery charge will come down.
The range of features available make a digital camera very cost effective and more than likely you will be able to find the right camera suited to satisfy your needs.
If you enjoy printing enlargements of your photographs, you may want to pay close attention to the printing size and what is required in mega pixels for you to have good quality results. For you to have an idea of the amount of mega pixels required for most commonly used size of prints, refer to the chart below:
For photos 2x6 inches - 2 mega pixels
For photos 5x7 inches - 3 mega pixels
For photos 8x10 inches -7 mega pixels
For photos 11x14 inches - 14 mega pixels
For photos 16x28 inches - 28 mega pixels
For photos 20x30 inches - 54 megapixels
The handling and design also matters and the lightweight ones are much nicer to carry around. Choose a camera that is user-friendly and make sure that you have a good local technical assistance in case you may run into problems with it.
There are several advantages of having a digital camera instead of the old traditional film camera. First of all, there are no films to be purchased ever. You make take dozens, perhaps hundreds of photos and instantly delete the ones you don’t like, or that did not came well into focus and just keep the best ones. You may load them into your computer album, record them and you may view your favorite photos from you camera or from your television set. Some digital cameras also come with a recording device that allows you to record special events and replay them immediately after recording
Digital cameras take pictures that are stored in digital media. It is possible to select, save or delete photos without any cost whatsoever. The photos are usually stored in media cards into the hundreds, meaning that you can take as many pictures as you like before you run out of space. Also in most digital cameras, the user can view the pictures on the LCD screen, which will allow him to pick the best ones.
No wonder that digital cameras became so popular and accessible item to almost everyone. It became a must to have one nowadays and even cell phone cameras are getting better everyday with noticeable improvements in quality of picture taken. The earlier models of cell phone cameras were somewhat limited as far as picture quality is concerned comparing to the ones we find on today’s market. The mega pixels are increasing constantly and so the quality of the cameras. If a person needs to carry both at the same time, maybe a cell phone with a digital camera built in will be an interesting option to consider
If you have not bought yet a digital camera, maybe this the right time to do so, considering the manufactures are offering so many new models with new features at bargain prices. It is wise to compare the several models among different manufacturers and also the prices from traditional and online stores. Make sure you do your research right, and most likely you will find the digital camera you are looking for.
This article is under GNU FDL license and can be distributed without any previous authorization from the author. However the author´s name and all the URL´s (links) mentioned in the article and biography must be kept.
http://www.articlenetworks.com/Article/Digital-Camera-Review/10930
How Do Digital Cameras Work?
In a nutshell, a digital camera uses a lens or series of lenses to focuses light onto a sensor. This sensor then records the image electronically and transfers it to the electronic workings of the camera where it is organized, converted into binary digital data, and then stored on fixed or removable memory to be later read by a computer. Of course this is a highly simplified explanation of how a digital camera works.
Most digital cameras' sensors are charge-coupled devices, or CCDs, although some cameras instead have a complementary metal oxide semiconductor, or CMOS. Either way, light is converted into electrical charges, which are transferred to the brain, and finally onto the storage media.
As we all learned in grade school, there are three primary colors. Digital cameras use filters to divide the light into those three colors during the conversion process. Good quality cameras have three separate sensors for filtering, with each sensor matching one strand of light.
The amount of light reaching the sensor is also controlled carefully. Cameras do this in two ways: aperture size, and shutter speed. Most of today's cameras have automated aperture settings, although some models allow manual control, which enthusiasts and professionals prefer. Shutter speed is generally set electronically.
There are four kinds of lenses used by digital cameras: optical-zoom lenses with automatic focus; fixed-focus, fixed-zoom lenses; digital-zoom lenses; and replaceable lens systems. Optical zoom lenses have both telephoto and wide options, while the fixed focus and fixed zoom lenses are used in the ordinary, inexpensive cameras that infrequent users own. The digital zoom lens creates the illusion of a zoom effect by culling pixels from the central part of the image and enlarging them to fill the frame. This, however, often results in a grainy or fuzzy image at the extreme limits of the camera's capabilities.
Most digital cameras come with an LCD screen to preview images or to look at them after capture. Most LCD screens are rather small, because the size of the cameras overall is small, too. For better viewing, you must transfer the image to a computer. For quality of image, the biggest factor is the resolution, which is measured in megapixels. The higher the resolution, generally the better the image quality.
Resolution also plays a role in the quality and size of the printed photographs. A cell phone camera or other low quality camera with a one megapixel resolution will produce images that are really only good for emailing or web pages, not printing. With a 2-megapixel camera, the images are good for printing at 4x6 inch sizes or so, while a 4-megapixel camera can be detailed enough to produce good prints at 16x20 inch size. With prices falling continually, if you love photos and hope to make some enlargements, you are best to only consider cameras above 6-megapixels.
Several years ago, digital cameras stored images onto fixed memory locations inside the camera. Users needed a cable to hook up to a computer in order to transfer images. Today's cameras all use removable, reusable memory media, and are therefore much more flexible and convenient. Larger amounts of storage are easy to purchase, so one can also take higher resolution pictures without fear of running out of memory. Various systems for storage include SmartMedia cards, memory sticks, and CompactFlash cards. Other cameras use microdrives, like little hard drives, or DVDs. Whichever method your camera uses, the convenience and freedom that digital photography allows will turn you into a shutterbug in short order!
http://www.articlenetworks.com/Article/How-Do-Digital-Cameras-Work-/8969
Most digital cameras' sensors are charge-coupled devices, or CCDs, although some cameras instead have a complementary metal oxide semiconductor, or CMOS. Either way, light is converted into electrical charges, which are transferred to the brain, and finally onto the storage media.
As we all learned in grade school, there are three primary colors. Digital cameras use filters to divide the light into those three colors during the conversion process. Good quality cameras have three separate sensors for filtering, with each sensor matching one strand of light.
The amount of light reaching the sensor is also controlled carefully. Cameras do this in two ways: aperture size, and shutter speed. Most of today's cameras have automated aperture settings, although some models allow manual control, which enthusiasts and professionals prefer. Shutter speed is generally set electronically.
There are four kinds of lenses used by digital cameras: optical-zoom lenses with automatic focus; fixed-focus, fixed-zoom lenses; digital-zoom lenses; and replaceable lens systems. Optical zoom lenses have both telephoto and wide options, while the fixed focus and fixed zoom lenses are used in the ordinary, inexpensive cameras that infrequent users own. The digital zoom lens creates the illusion of a zoom effect by culling pixels from the central part of the image and enlarging them to fill the frame. This, however, often results in a grainy or fuzzy image at the extreme limits of the camera's capabilities.
Most digital cameras come with an LCD screen to preview images or to look at them after capture. Most LCD screens are rather small, because the size of the cameras overall is small, too. For better viewing, you must transfer the image to a computer. For quality of image, the biggest factor is the resolution, which is measured in megapixels. The higher the resolution, generally the better the image quality.
Resolution also plays a role in the quality and size of the printed photographs. A cell phone camera or other low quality camera with a one megapixel resolution will produce images that are really only good for emailing or web pages, not printing. With a 2-megapixel camera, the images are good for printing at 4x6 inch sizes or so, while a 4-megapixel camera can be detailed enough to produce good prints at 16x20 inch size. With prices falling continually, if you love photos and hope to make some enlargements, you are best to only consider cameras above 6-megapixels.
Several years ago, digital cameras stored images onto fixed memory locations inside the camera. Users needed a cable to hook up to a computer in order to transfer images. Today's cameras all use removable, reusable memory media, and are therefore much more flexible and convenient. Larger amounts of storage are easy to purchase, so one can also take higher resolution pictures without fear of running out of memory. Various systems for storage include SmartMedia cards, memory sticks, and CompactFlash cards. Other cameras use microdrives, like little hard drives, or DVDs. Whichever method your camera uses, the convenience and freedom that digital photography allows will turn you into a shutterbug in short order!
http://www.articlenetworks.com/Article/How-Do-Digital-Cameras-Work-/8969
Understanding Digital Cameras
Capturing beautiful moments and making them accessible quickly is no longer a rich man's forte. Most of us have access to our memorable moments in just a click away. Digital cameras save you a lot of time. Once the photo has been taken, you can just download those images in a computer and make them accessible on the net in various ways. Digital cameras record and store photographic images in digital format. Capturing pictures is usually accomplished by use of a photo sensor, using a charged couple device (CCD.) After transferring the pictures to your computer, you can edit and save them in a compact disc or hard drive.
With digital cameras you can instantly seize the picture you would love to keep forever. Delete unwanted pictures easily. No hassle of buying films. You don't have to print every picture; you have complete control of the final print after editing on computer. No worries of negatives getting spoiled or lost. You can store many images without having to change or buy films.
There are many brands of digital cameras available in the market today. These include: Sony, Canon, Olympus, Nikon, Kodak, Minolta and Fuji. These are a few famous brands worldwide. Even basic digital camera models have plenty of features, levels and menus. This makes it difficult for beginners to select the right camera meeting their needs. Digital cameras are available in all price ranges depending on the amount of features they have. Before you start comparing the features you should decide for what purpose you would like to use your digital camera. The best way to start your search is to log on to the net and visit all the sites that offer feature and price comparisons for different types and brands of digital cameras.
Almost all digital cameras today have live-preview functionality, where a screen is provided in the camera to see the preview of the image that you just clicked. The most commonly compared feature in digital cameras is the “mega pixel.” This means the amount of pixels in millions. Therefore, a four mega pixel camera would have four million pixels. The other important features to compare include optical and digital zoom capacity; connectivity with other devices such as computer, printer, etc.; the internal storage space as well as compatibility with external storage devices; memory cards; batteries; and image file formats.
Many digital cameras offer connectivity through USB port, FireWire port, USB PTP mode, Bluetooth, Wi-Fi, etc. These days, many cameras are offering PictBridge mode that allows direct printing from the digital camera without the mediation of a computer. Though all cameras have some amount of internal memory, external memory cards are required to save more pictures. These include Micro Drives or Compact Flash memory cards that are generally used for high-end professional cameras. Memory Stick by Sony is a proprietary flash memory card. SD/MMC, Mini SD and Micro SD cards are the ones used mostly for commercial digital cameras.
If you are an amateur photographer, then you should select a camera with automatic settings and features. This will help you in getting the right pictures based on the amount of light and scenes without too much effort. But if you are looking for a professional camera then you should pick the one that allows you to select all shooting modes manually. There are many shooting modes available in the latest models of digital cameras including landscape, portrait, panorama, action settings, night mode, beach mode, snow mode, and sunset/sunrise modes.
The common formats in which you can take out the image output include JPEG, TIFF, DNG, etc. For videos, the most common formats are AVI, DV, MPEG, MOV, WMV, ASF, and MP4.
This article is under GNU FDL license and can be distributed without any previous authorization from the author. However the author´s name and all the URL´s (links) mentioned in the article and biography must be kept.
http://www.article-hangout.com/Article/Understanding-Digital-Cameras/102119
With digital cameras you can instantly seize the picture you would love to keep forever. Delete unwanted pictures easily. No hassle of buying films. You don't have to print every picture; you have complete control of the final print after editing on computer. No worries of negatives getting spoiled or lost. You can store many images without having to change or buy films.
There are many brands of digital cameras available in the market today. These include: Sony, Canon, Olympus, Nikon, Kodak, Minolta and Fuji. These are a few famous brands worldwide. Even basic digital camera models have plenty of features, levels and menus. This makes it difficult for beginners to select the right camera meeting their needs. Digital cameras are available in all price ranges depending on the amount of features they have. Before you start comparing the features you should decide for what purpose you would like to use your digital camera. The best way to start your search is to log on to the net and visit all the sites that offer feature and price comparisons for different types and brands of digital cameras.
Almost all digital cameras today have live-preview functionality, where a screen is provided in the camera to see the preview of the image that you just clicked. The most commonly compared feature in digital cameras is the “mega pixel.” This means the amount of pixels in millions. Therefore, a four mega pixel camera would have four million pixels. The other important features to compare include optical and digital zoom capacity; connectivity with other devices such as computer, printer, etc.; the internal storage space as well as compatibility with external storage devices; memory cards; batteries; and image file formats.
Many digital cameras offer connectivity through USB port, FireWire port, USB PTP mode, Bluetooth, Wi-Fi, etc. These days, many cameras are offering PictBridge mode that allows direct printing from the digital camera without the mediation of a computer. Though all cameras have some amount of internal memory, external memory cards are required to save more pictures. These include Micro Drives or Compact Flash memory cards that are generally used for high-end professional cameras. Memory Stick by Sony is a proprietary flash memory card. SD/MMC, Mini SD and Micro SD cards are the ones used mostly for commercial digital cameras.
If you are an amateur photographer, then you should select a camera with automatic settings and features. This will help you in getting the right pictures based on the amount of light and scenes without too much effort. But if you are looking for a professional camera then you should pick the one that allows you to select all shooting modes manually. There are many shooting modes available in the latest models of digital cameras including landscape, portrait, panorama, action settings, night mode, beach mode, snow mode, and sunset/sunrise modes.
The common formats in which you can take out the image output include JPEG, TIFF, DNG, etc. For videos, the most common formats are AVI, DV, MPEG, MOV, WMV, ASF, and MP4.
This article is under GNU FDL license and can be distributed without any previous authorization from the author. However the author´s name and all the URL´s (links) mentioned in the article and biography must be kept.
http://www.article-hangout.com/Article/Understanding-Digital-Cameras/102119
Top Players In Digital Camera Market
Selecting a digital camera is definitely not an easy task with hundreds of brands available in the market. Before you decide to buy, you should take a look at the many features like optical quality, zoom, storage media and etc. These are only a few features among the many digital camera models to be compared. In terms of image quality, the amount of mega pixel resolution and the quality of the lens are the main factors that determine the sharpness of the pictures. And one of the best ways to know the quality and crispness of pictures is to see a printed picture.
As for image storage, there are many different kinds of storage media or flash memory cards available for digital cameras, which are rewritable chips that do not require power in order to retain the content. This makes it possible to take many photos without the fear of losing them before they are stored in CD-ROM or hard disk of the computer.
Surely, choosing a digital camera is not an easy task with so many models and range of mega pixels, features and different prices. Some of major brands available in the market are Argus, BenQ, Canon, Casio, Disney, Epson, Fujifilm, HP, JVC America, Kodak, Konica Minolta, Nikon, Olympus, Panasonic, Pentax, Polaroid, Ricoh, Samsung, Sanyo, Sony and Toshiba. However the most popular among them are Canon, Nikon, Sony, Olympus, and Kodak.
Sony`s digital cameras are among the most innovative and popular in the industry. The cameras range from tiny 2 mega pixel point & shoots to bulky 8+ mega pixel units. Some of Sony digital cameras that are selling fast are Cybershot N2, Cybershot S700, and Cybershot T20.
Canon is also ruling the market with its amazing array of models. They receive high ratings from consumers because of their impressive construction and top quality images. Canon produces a wide variety of cameras, ranging from small point and shoot ELPH series to the professional range of SLRs. The most popular ones are Canon PowerShot A460, PowerShot A710 IS and PowerShot A640.
Nikon is not far behind in the consumer digital market where it is one of the major players.The Coolpix line of cameras with its impressive D-series SLRs has made a splash in the camera scene. Take a look at the fast selling ones: Nikon D40, Coolpix S50 and Coolpix L12.
Kodak digital cameras are known for their simplicity and quality. The easiest to operate when compared to its competitors. The one-touch image downloading, emailing, and printing features have made this brand even more popular in the market. Take a look at few of the models in the market: Kodak EasyShare V1003, EasyShare V803 and Easyshare C653.
Among the other major brands is the Olympus that offers innovative features like the 10x optical zoom on the Ultra Zoom models and the weather-proof body of the Stylus series. Some of the popular ones are Olympus Stylus 550UZ, Stylus 760 and Stylus 770 SW.
Before you start shopping for a digital camera, it will be helpful to know the lingo. Understand what the salespeople are talking about when they drop these digital camera terms - Borderless, CCD, Compact Flash, Digital Zoom, DPI, Firmware, F-stop, Image Format, Grayscale, LCD Screen, Mega pixel, Memory Card, Memory Stick, Optical Zoom, Secure Digital, SLR and xD Picture Card. So, to be on the safer side, it is better to have the knowledge of these terms so that you don`t get cheated.
There is so much that goes into buying a digital camera. Wrestle all the details under control with the various brochures provided by the manufacturers before deciding to buy one for yourself.
This article is under GNU FDL license and can be distributed without any previous authorization from the author. However the author´s name and all the URL´s (links) mentioned in the article and biography must be kept.
http://www.article-hangout.com/Article/Top-Players-In-Digital-Camera-Market/102125
As for image storage, there are many different kinds of storage media or flash memory cards available for digital cameras, which are rewritable chips that do not require power in order to retain the content. This makes it possible to take many photos without the fear of losing them before they are stored in CD-ROM or hard disk of the computer.
Surely, choosing a digital camera is not an easy task with so many models and range of mega pixels, features and different prices. Some of major brands available in the market are Argus, BenQ, Canon, Casio, Disney, Epson, Fujifilm, HP, JVC America, Kodak, Konica Minolta, Nikon, Olympus, Panasonic, Pentax, Polaroid, Ricoh, Samsung, Sanyo, Sony and Toshiba. However the most popular among them are Canon, Nikon, Sony, Olympus, and Kodak.
Sony`s digital cameras are among the most innovative and popular in the industry. The cameras range from tiny 2 mega pixel point & shoots to bulky 8+ mega pixel units. Some of Sony digital cameras that are selling fast are Cybershot N2, Cybershot S700, and Cybershot T20.
Canon is also ruling the market with its amazing array of models. They receive high ratings from consumers because of their impressive construction and top quality images. Canon produces a wide variety of cameras, ranging from small point and shoot ELPH series to the professional range of SLRs. The most popular ones are Canon PowerShot A460, PowerShot A710 IS and PowerShot A640.
Nikon is not far behind in the consumer digital market where it is one of the major players.The Coolpix line of cameras with its impressive D-series SLRs has made a splash in the camera scene. Take a look at the fast selling ones: Nikon D40, Coolpix S50 and Coolpix L12.
Kodak digital cameras are known for their simplicity and quality. The easiest to operate when compared to its competitors. The one-touch image downloading, emailing, and printing features have made this brand even more popular in the market. Take a look at few of the models in the market: Kodak EasyShare V1003, EasyShare V803 and Easyshare C653.
Among the other major brands is the Olympus that offers innovative features like the 10x optical zoom on the Ultra Zoom models and the weather-proof body of the Stylus series. Some of the popular ones are Olympus Stylus 550UZ, Stylus 760 and Stylus 770 SW.
Before you start shopping for a digital camera, it will be helpful to know the lingo. Understand what the salespeople are talking about when they drop these digital camera terms - Borderless, CCD, Compact Flash, Digital Zoom, DPI, Firmware, F-stop, Image Format, Grayscale, LCD Screen, Mega pixel, Memory Card, Memory Stick, Optical Zoom, Secure Digital, SLR and xD Picture Card. So, to be on the safer side, it is better to have the knowledge of these terms so that you don`t get cheated.
There is so much that goes into buying a digital camera. Wrestle all the details under control with the various brochures provided by the manufacturers before deciding to buy one for yourself.
This article is under GNU FDL license and can be distributed without any previous authorization from the author. However the author´s name and all the URL´s (links) mentioned in the article and biography must be kept.
http://www.article-hangout.com/Article/Top-Players-In-Digital-Camera-Market/102125
Few Facts Of Digital Cameras
A digital camera captures images in a digital format, unlike a conventional camera, which captures images using a photographic film.
History:
Using a mosaic photosensor, Eugene F. Lally of the Jet Propulsion Laboratory first showed how still photos could be produced in a digital domain. An engineer at Eastman Kodak, Steve Sasson, used solid-state CCD chips to build a prototype digital camera having a resolution of 0.01 megapixel, and recorded black and white digital images to a magnetic cassette tape. With this prototype model, Steve took the first image in December of 1975 taking 23 seconds to capture it.
In 1988, Fuji DS-1P became the first digital camera that captured images as a computerized file. However, the camera never entered the U.S. market. In 1991, Kodak DCS-100 was the first commercially available digital camera, which used a 1.3 megapixel sensor. With the advancement of technology, modern digital cameras have become multifunctional and are now capable of capturing audio/video and still photographs.
Benefits:
1 - You get superior image quality. Digital cameras can offer good to excellent image resolution.
2 - You get a fair price. A digital camera is reasonably priced and is affordable.
3 - You can transfer the pictures to your laptop. You can easily connect the digital camera to your laptop and transfer the pictures in your hard disk.
4 - You can print in large sizes. Due to its high resolution, pictures can be printed in large sizes by any plotter.
5 - You can email the pictures to your friends. You can send the pictures by email to your loved ones.
6 - You can store the images in CDs or hard disk. Once the pictures are transferred from digital camera to the computer, permanent storage on a CD or hard disk is possible.
7 - You can take the camera in your pocket while you travel. The small size of the digital camera makes traveling with it easy and a pleasure.
8 - You can move in close to your subject. Zoom lenses offer close-ups of your subject with sharp focus. You can take very good close-ups of flowers, bugs, stamps, coins, etc.
9 - You can rework the image in a computer. Any photo editing software can rework the images taken.
10 - You can take good pictures even in low-light situations. Due to flexible over sensitivity or ISO equivalents, digital cameras can easily take detailed pictures even in low-light conditions.
11 - You can take quality still photos of moving objects. Sports and fashion photography can be easily accomplished due to the fast burst rate of digital cameras.
12 - You save money. There is no need of buying photographic films, developing them into negatives and positives. Moreover, the batteries are usually rechargeable lithium-ion batteries, which last a long time.
13 - You can choose as per your needs and fancy. Many models are available like standard digital camera, underwater digital camera, waterproof digital camera, compact digital camera, and the professional digital camera.
Storage Media:
Digital cameras use memory to capture and store images. Some of the storages media used are onboard flash memory, 3.5" floppy disks, video floppy disk, PCMCIA hard drives, CD or DVD, CompactFlash memory cards, Microdrives, Memory Stick, SD/MMC, MiniSD Card, MicroSD Card, XD-Picture Card, SmartMedia, and FP Memory.
Power:
Digital cameras consume a lot of power, which is supplied by powerful, small in size batteries. Batteries are broadly divided into two groups, namely, off-the-shelf and proprietary. Off-the-shelf batteries are like AA, CR2, CR-V3, AAA, and RCR-V3. They are lithium-ion (Li-Ion) or Nickel metal hydride (NiMH) batteries. Standard AA non-rechargeable alkaline batteries either do not work or work for only a very short time in most cameras.
Proprietary batteries are built as per the manufacturer`s custom specifications and are usually available as aftermarket replacement parts. Generally, lithium ion batteries are widely used as proprietary batteries for digital cameras.
This article is under GNU FDL license and can be distributed without any previous authorization from the author. However the author´s name and all the URL´s (links) mentioned in the article and biography must be kept.
http://www.article-hangout.com/Article/Few-Facts-Of-Digital-Cameras/102130
History:
Using a mosaic photosensor, Eugene F. Lally of the Jet Propulsion Laboratory first showed how still photos could be produced in a digital domain. An engineer at Eastman Kodak, Steve Sasson, used solid-state CCD chips to build a prototype digital camera having a resolution of 0.01 megapixel, and recorded black and white digital images to a magnetic cassette tape. With this prototype model, Steve took the first image in December of 1975 taking 23 seconds to capture it.
In 1988, Fuji DS-1P became the first digital camera that captured images as a computerized file. However, the camera never entered the U.S. market. In 1991, Kodak DCS-100 was the first commercially available digital camera, which used a 1.3 megapixel sensor. With the advancement of technology, modern digital cameras have become multifunctional and are now capable of capturing audio/video and still photographs.
Benefits:
1 - You get superior image quality. Digital cameras can offer good to excellent image resolution.
2 - You get a fair price. A digital camera is reasonably priced and is affordable.
3 - You can transfer the pictures to your laptop. You can easily connect the digital camera to your laptop and transfer the pictures in your hard disk.
4 - You can print in large sizes. Due to its high resolution, pictures can be printed in large sizes by any plotter.
5 - You can email the pictures to your friends. You can send the pictures by email to your loved ones.
6 - You can store the images in CDs or hard disk. Once the pictures are transferred from digital camera to the computer, permanent storage on a CD or hard disk is possible.
7 - You can take the camera in your pocket while you travel. The small size of the digital camera makes traveling with it easy and a pleasure.
8 - You can move in close to your subject. Zoom lenses offer close-ups of your subject with sharp focus. You can take very good close-ups of flowers, bugs, stamps, coins, etc.
9 - You can rework the image in a computer. Any photo editing software can rework the images taken.
10 - You can take good pictures even in low-light situations. Due to flexible over sensitivity or ISO equivalents, digital cameras can easily take detailed pictures even in low-light conditions.
11 - You can take quality still photos of moving objects. Sports and fashion photography can be easily accomplished due to the fast burst rate of digital cameras.
12 - You save money. There is no need of buying photographic films, developing them into negatives and positives. Moreover, the batteries are usually rechargeable lithium-ion batteries, which last a long time.
13 - You can choose as per your needs and fancy. Many models are available like standard digital camera, underwater digital camera, waterproof digital camera, compact digital camera, and the professional digital camera.
Storage Media:
Digital cameras use memory to capture and store images. Some of the storages media used are onboard flash memory, 3.5" floppy disks, video floppy disk, PCMCIA hard drives, CD or DVD, CompactFlash memory cards, Microdrives, Memory Stick, SD/MMC, MiniSD Card, MicroSD Card, XD-Picture Card, SmartMedia, and FP Memory.
Power:
Digital cameras consume a lot of power, which is supplied by powerful, small in size batteries. Batteries are broadly divided into two groups, namely, off-the-shelf and proprietary. Off-the-shelf batteries are like AA, CR2, CR-V3, AAA, and RCR-V3. They are lithium-ion (Li-Ion) or Nickel metal hydride (NiMH) batteries. Standard AA non-rechargeable alkaline batteries either do not work or work for only a very short time in most cameras.
Proprietary batteries are built as per the manufacturer`s custom specifications and are usually available as aftermarket replacement parts. Generally, lithium ion batteries are widely used as proprietary batteries for digital cameras.
This article is under GNU FDL license and can be distributed without any previous authorization from the author. However the author´s name and all the URL´s (links) mentioned in the article and biography must be kept.
http://www.article-hangout.com/Article/Few-Facts-Of-Digital-Cameras/102130
The Inside Picture Of A Digital Camera
Electronics greatest technological breakthrough in this modern age is the digitization of analog signals. Digital information, which is represented by 1s and 0s, is formed upon successful conversion of analog information, which is represented by a fluctuating wave. This conversion of analog to digital has made the world of science and technology make great advances into the field of computers, Internet, satellites, and space research.
On the consumer domain, the benefits of this technological breakthrough can be witnessed in consumer electronic products like TVs, computers, cameras, camcorders, CDs, DVDs, etc. Digitization gave rise to microchips, which could be programmed to perform any task. With the utilization of the microchip, the digital camera was born.
In a digital camera, the lens focuses the image, the shutter allows the entry of light reflecting from that image into the camera, for a fraction of a second, and the aperture determines the quantity of light allowed inside the camera. When the light enters the camera, it does not fall on a photographic film as it does in a conventional camera, rather it falls on an image sensor.
The image sensor is an electronic device, a semiconductor, made up of photosites that measures the light intensity. The photosite can only measure the intensity of light and cannot recognize any color. To overcome this, each photosite is covered with a color filter of red, or a green, or a blue color according to a pattern known as the Bayer pattern. Since the human eye is twice sensitive to the green color, the number of photosites having green color is twice the number of photosites having red or blue color. Millions of photosites are covered by this Bayer pattern. Each color occupies a single photosite, which is known as a pixel.
The more the number of pixels, the greater is the amount of detail that can be captured. The detail of the image is called as resolution, which is determined by the quality of the lens and the number of pixels in the image sensor. High-end digital cameras have about 12 million pixels, whereas professional digital cameras have about 20 million pixels.
The information of the pixels is recorded as electrical analog signals, is amplified, and then is fed into a converter, which converts the amplified analog signals into digital binary numbers, with respect to the color information of each pixel. These digital binary numbers are then fed into a computer chip residing inside the camera. The computer chip analyzes the digital binary numbers that have been made as per the color of individual pixels. This information is known as RAW data. For analysis, the computer chip subjects this RAW data using a technique known as demosaicing.
In this technique (demosaicing), the pixel color is determined as per the color of the neighboring pixels. For example, if a red color pixel is surrounded by blue and green pixels, then that red color pixel is treated as white color, since the color white is a combination of the colors, red, blue, and green. After demosaicing is complete, the image is further subjected to the photographer`s settings of the camera, like adjustments made for brightness, color saturation, contrast, etc.
High-end digital cameras usually do not do anything more to the image thus produced. However, professional digital cameras have a sharpening algorithm, which heighten the sharpness and clarity of the demosaiced and settings adjusted image. Professional digital cameras also have the option of saving the image in its RAW data before any demosaicing or adjustments are made by the computer chip. This is to give control to the professional photographers to make changes to the RAW data as per their own choices.
The image can be saved in an uncompressed format like TIFF or a compressed format like JPEG. Uncompressed formats preserve greater information; thus, the detail of the photograph is much more than a compressed format, where detail is less, as lesser information is stored. Hence, compressed formats are also known as lossy formats, since details are lost. An uncompressed format increases the file size, whereas a compressed format reduces the file size. Depending upon the need, the image can be saved either in an uncompressed or a compressed image format, as bits and bytes in a memory card. The stored image can be viewed on the digital camera`s display screen as a digital photo.
This digital photo can then be transferred from the digital camera to the computer`s hard disk via the serial port or USB port or FireWire port or Bluetooth wireless using Wi-Fi connectivity. RAW data and uncompressed data like TIFF take a longer time to transfer than compressed data like JPEG or GIF.
Once the data has been transferred to the computer`s hard disk, any photo editing software can manipulate and adjust it, as per the individual tastes and requirements of the photographer. The digital photo can then be printed on photographic paper, specially coated paper, or any other paper via a color inkjet or laser printer. Utilizing a plotter, it can be printed in larger sizes, in any other medium like canvas, acrylic, vinyl, etc. The digital photo can be saved on a hard disk, pen drive or a CD, for archival purposes.
With passing time, more and more features are being introduced in a digital camera. Nowadays, audio-video recording is also fused with the still image capturing capability of the digital camera, making them small camcorders (camera + recorders).
http://www.article-hangout.com/Article/The-Inside-Picture-Of-A-Digital-Camera/102135
On the consumer domain, the benefits of this technological breakthrough can be witnessed in consumer electronic products like TVs, computers, cameras, camcorders, CDs, DVDs, etc. Digitization gave rise to microchips, which could be programmed to perform any task. With the utilization of the microchip, the digital camera was born.
In a digital camera, the lens focuses the image, the shutter allows the entry of light reflecting from that image into the camera, for a fraction of a second, and the aperture determines the quantity of light allowed inside the camera. When the light enters the camera, it does not fall on a photographic film as it does in a conventional camera, rather it falls on an image sensor.
The image sensor is an electronic device, a semiconductor, made up of photosites that measures the light intensity. The photosite can only measure the intensity of light and cannot recognize any color. To overcome this, each photosite is covered with a color filter of red, or a green, or a blue color according to a pattern known as the Bayer pattern. Since the human eye is twice sensitive to the green color, the number of photosites having green color is twice the number of photosites having red or blue color. Millions of photosites are covered by this Bayer pattern. Each color occupies a single photosite, which is known as a pixel.
The more the number of pixels, the greater is the amount of detail that can be captured. The detail of the image is called as resolution, which is determined by the quality of the lens and the number of pixels in the image sensor. High-end digital cameras have about 12 million pixels, whereas professional digital cameras have about 20 million pixels.
The information of the pixels is recorded as electrical analog signals, is amplified, and then is fed into a converter, which converts the amplified analog signals into digital binary numbers, with respect to the color information of each pixel. These digital binary numbers are then fed into a computer chip residing inside the camera. The computer chip analyzes the digital binary numbers that have been made as per the color of individual pixels. This information is known as RAW data. For analysis, the computer chip subjects this RAW data using a technique known as demosaicing.
In this technique (demosaicing), the pixel color is determined as per the color of the neighboring pixels. For example, if a red color pixel is surrounded by blue and green pixels, then that red color pixel is treated as white color, since the color white is a combination of the colors, red, blue, and green. After demosaicing is complete, the image is further subjected to the photographer`s settings of the camera, like adjustments made for brightness, color saturation, contrast, etc.
High-end digital cameras usually do not do anything more to the image thus produced. However, professional digital cameras have a sharpening algorithm, which heighten the sharpness and clarity of the demosaiced and settings adjusted image. Professional digital cameras also have the option of saving the image in its RAW data before any demosaicing or adjustments are made by the computer chip. This is to give control to the professional photographers to make changes to the RAW data as per their own choices.
The image can be saved in an uncompressed format like TIFF or a compressed format like JPEG. Uncompressed formats preserve greater information; thus, the detail of the photograph is much more than a compressed format, where detail is less, as lesser information is stored. Hence, compressed formats are also known as lossy formats, since details are lost. An uncompressed format increases the file size, whereas a compressed format reduces the file size. Depending upon the need, the image can be saved either in an uncompressed or a compressed image format, as bits and bytes in a memory card. The stored image can be viewed on the digital camera`s display screen as a digital photo.
This digital photo can then be transferred from the digital camera to the computer`s hard disk via the serial port or USB port or FireWire port or Bluetooth wireless using Wi-Fi connectivity. RAW data and uncompressed data like TIFF take a longer time to transfer than compressed data like JPEG or GIF.
Once the data has been transferred to the computer`s hard disk, any photo editing software can manipulate and adjust it, as per the individual tastes and requirements of the photographer. The digital photo can then be printed on photographic paper, specially coated paper, or any other paper via a color inkjet or laser printer. Utilizing a plotter, it can be printed in larger sizes, in any other medium like canvas, acrylic, vinyl, etc. The digital photo can be saved on a hard disk, pen drive or a CD, for archival purposes.
With passing time, more and more features are being introduced in a digital camera. Nowadays, audio-video recording is also fused with the still image capturing capability of the digital camera, making them small camcorders (camera + recorders).
http://www.article-hangout.com/Article/The-Inside-Picture-Of-A-Digital-Camera/102135
Subscribe to:
Posts (Atom)