Hardware

Introduction to Digital Cameras

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Executive Summary

With a digital camera, images are taken by using light and a silicon chip. Photos are stored in the camera's memory and can be deleted right from the camera if the picture is not good. Digital photos can be printed at home on a printer or can be taken to a store for printing. They can also be stored on a computer and shown on the computer screen or a television, or stored on a CD. Resolution describes how fine or detailed a photo will be. Higher the resolution, sharper the photo. This is especially important for printing photos. Resolution is measured in pixels. Most digital cameras are rated by the number of megapixels they have. A megapixel is one million pixels. Such cameras have Digital and Optical Zoom. The digital camera supports photos in file types like JPEG, TIFF and RAW. With compression extra data is cleaned and files become smaller. The memories are stored in a chip. There are several shooting modes in the camera. Many cameras offer voice recording and movie capture. Rechargeable batteries, especially lithium-ion cells, tend to last the longest. Many cameras also take regular batteries, either AA or AAA sized. A good digital camera should provide quick access to the most commonly used functions via buttons or other physical controls, and the menu system should be simple, logical, and easy to learn.

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