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This type of file contains all the settings that you have selected via the camera’s menu, such as image size and quality, colour balance, contrast and noise reduction. The camera applies these settings to the image and compresses them onto the memory card. The most popular format, JPEG produces images processed by the camera, ready to show on the computer or to print.

The JPEG file can be reprocessed with image-editing software such as Adobe Photoshop at a later date, but the settings applied by the camera cannot be completely reversed. Always work on a copy of the original JPEG, as repeated opening and saving will degrade the image.