In today's market, there are many different types of digital cameras to suit your different needs. We hereby list some considerable factors for choosing a digital camera. Due to the different purpose of using digital camera, it is difficult to have a camera which is perfect to everyone. Therefore it is recommended to choose the camera to suit your own needs.
The following are what you need to seriously consider before buying a digital camera.
1. Pixel:
1.3 mega pixel is suitable for screen viewing, 1280x960 is well enough for screen of 17 to 21 inches.
2-mega pixels can achieve print out under 4x6 inches. The detail of such photo can be compared with photo taken by traditional cameras.
3 mega pixel and above will make computer editing move convenient. You can do whatever you like with the image taken.
4 mega pixel and above can be used to print larger photos – 6x8 inches or print out with finer detail.
Most major digital camera manufacturers have already stepped into 5 mega pixel. It is believe it will become the mainstream very soon.
The pixel size of the digital camera will decide the resolution of a photo to be enlarged. However, the output file will be larger. Which means, more storage space will be needed for your photos. And it will also take longer time for image display, transmission or process. But be noted that resolution is not the only factor of the camera performance. The quality is not only decided by resolution but also the quality of the picture. High resolution not necessarily means good picture quality.
2. Resolution
How much resolution you need depends on how you plan to use your digital camera. Obviously you plan to take pictures, but what you plan to do with the pictures is what matters. If you plan to take pictures only for online use, such as to e-mail to friends and family or to place on a web page, most any amount of resolution will accomplish this. However, if you plan to print large photos or need clearer pictures for business use, you will need more pixels. A good rule of thumb is to choose a digital camera with the highest resolution you can afford. At the very least, buy a camera with a minimum of 2 to 3 mega pixels. Beware of sales hype, which tends to emphasize high resolution over all other features. While resolution is important, there are many other features, which influence a camera's output. Make sure the camera you choose has a combination of features important to you, not just high resolution.
3. Lens
A glass lens is preferable to a plastic lens. Do not skimp on the lens. It is best to choose an optical zoom lens over digital zoom. Many lower cost cameras do not have optical zoom lenses. Optical zoom is essential for better quality pictures. Optical zoom actually moves the lens to capture the image, while digital zoom captures fewer pixels and magnifies the captured image. Pictures taken with digital zoom are often blurry and look digitized.
4. Battery and Power Consumption
If you treasure your battery life, you can turn off LCD display on your digital camera. One of the most power-consumed parts in a camera is LCD display. In order to obtain clear display, LCD background illumination consumes power heavily (You can turn off the LCD display to save the power). For general Alkaline Battery or Ni-CD/Ni-MH battery, the power can last for around an hour (with LCD on) whereas for camera Lithium battery, it can last longer.
In addition to LCD display, CCD (Charge Coupled Devices) also consumed lot of power. For those models that use LCD display as view finders, in order to drive CCD continuously, the power loading is heavy. Sometimes, the power of four dry batteries can only last for less than 30 minutes.
Therefore, take a check of whether rechargeable batteries or charger are included in your camera package or whether other relevant charging information is mentioned.
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