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Chapter 2. Digital Photography: The Nece... > Understanding and Using Your Digital...

Understanding and Using Your Digital Camera

Each digital camera has a different design and controls, so features on your camera might be slightly different from those described here. For example, some cameras have a delete button, while other cameras have a menu item for deleting photographs. If you are unsure of a feature, refer to the manual that came with your camera. In fact, have your digital camera’s manual on hand while going through this section. It’s my experience that the “Quick Start” guide does not provide sufficient information about the advanced features of most cameras.

Resolution

The resolution of a digital camera is measured in pixels. A pixel is the smallest element of a digital image. Resolution is a combination of the relative size of each pixel and how many there are on the camera’s sensor, or chip. The sensor captures red, green, and blue pixels, and then processes the information into a full-color photograph. As the pixel count increases, so does the amount of information in a picture. A 5-megapixel camera can capture 5,000,000 pixels. Today’s professional digital cameras range from 5 megapixels to 24 megapixels.


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