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All digital cameras rely on a color space definition to capture color. This definition, which is part of a processing algorithm, forces light values captured by the camera sensor into a defined color space. Essentially, the camera can only capture specific colors, not the entire spectrum of color. Generally, this is not significant because the human eye cannot really discern colors accurately. There are several color space definitions in use today. Each has its advantages and disadvantages:

• RGB-Within the RGB color model are color spaces number, such as Apple RGB, sRGB and Adobe RGB(1998). Each RGB color space… Read More

Lens quality and pixel resolution affect the resolution of a digital camera. Four-, five-, six-, and higher megapixel cameras with quality lenses can match the resolution of amateur 35mm photographs. Digital cameras with fewer pixels (such as a CCD of 2-3.2 megapixels) are fine for snapshots, but just don't have the resolution of film. If film-like resolution is required, definitely consider a camera with a chip of five or more megapixels. Surprisingly more important than the CCD is the lens. In fact, the quality of the lens is so important that you should seriously consider only the finest lens manufacturers for your digital camera. Companies… Read More

By far the biggest problem with consumer-level digital cameras is the delay. Unlike most film cameras, some consumer digital cameras have a significant delay when you depress the shutter. When you take a picture with fixed-focus 35mm film cameras, the picture is taken immediately. This isn't always the case with digital cameras. It may take several seconds before the camera can capture the image because the camera must perform the following actions:

• Autofocus on the subject.
• Open the shutter when autofocus is finished to expose the sensor to light.
• Accumulate enough charge on the sensor.
• Close the shutter.
… Read More