![]() Unlike physical film after development, the Raw file preserves the information captured at the time of exposure. Like undeveloped photographic film, a raw digital image may have a wider dynamic range or color gamut than the developed film or print. (With exposed film, development is a single event that physically transforms the unexposed film irreversibly.) Rather, the Raw datasets are more like exposed but undeveloped film which can be converted (electronically developed) in a non-destructive manner multiple times in observable, reversible steps to reach a visually desired image. Raw image files are sometimes incorrectly described as "digital negatives", but neither are they negatives nor do the unprocessed files constitute visible images. There are dozens of raw formats in use by different manufacturers of digital image capture equipment. ![]() Normally, the image is processed by a raw converter in a wide- gamut internal color space where precise adjustments can be made before conversion to a viewable file format such as JPEG or PNG for storage, printing, or further manipulation. Raw files are named so because they are not yet processed and therefore are not ready to be printed, viewed or edited with a bitmap graphics editor. A camera raw image file contains unprocessed or minimally processed data from the image sensor of either a digital camera, a motion picture film scanner, or other image scanner. ![]()
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