Digital Camera Guide-Image Compression
When taking pictures, there are a number of choices you can make about such things as image sizes, compression ratios, and file formats. Your choices determine image quality and the size of the files you create.
When you take a photograph, the size of the image file is huge compared to many other types of computer files since each pixel requires 24 bits (3 bytes) to store color information. As the resolution increases, so does the file size. A file for a low-resolution 1 megapixel image is 3 megabytes, and at 3 megapixels is climbs to 9 megabytes, and at 6 megapixels all the way to 18 megabytes. The files become too large to easily store, transmit, and edit. To make image files smaller and more manageable, digital cameras use a process called compression. Compressing images not only let’s you save more images on a camera’s storage device, it also allows you to download, display, edit, and transmit them more quickly.



















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