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Compression
Compression refers to the process of reducing an image’s file size so that it doesn’t absorb a large amount of computer memory. All digital cameras use some form of compression due to their limited storage capacity.
The compression of an image file can occur either through lossless or lossy compression. When lossless compression occurs, no data is lost in the compression. Although this process of compression takes time to compress and decompress the file, the file is identical to the original copy when it is recovered. Files that have undergone lossless compression will end with a ‘TIFF‘ suffix.
The lossy process compresses a file by deleting some of the information it contains. Consequently, a lossy compression cannot reproduce the original exactly. You can identify files that have been through a lossy compression by the suffix JPEG (Joint Photographic Experts Group) on the filename. Any image that has gone through lossy compression will inherently contain errors due to the loss of information from the original image.
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