The selection of the final choice of image rendering is part of the process of white balancing and color grading. Likewise, the process of converting a raw image file into a viewable format is sometimes called developing a raw image, by analogy with the film development process used to convert photographic film into viewable prints. Raw image files are sometimes called digital negatives, as they fulfill the same role as negatives in film photography: that is, the negative is not directly usable as an image, but has all of the information needed to create an image. In fact there are dozens if not hundreds of raw image formats in use by different models of digital equipment (like cameras or film scanners). These images are often described as " RAW image files" based on the erroneous belief that they represent a single file format. Normally, the image is processed by a raw converter in a wide- gamut internal colorspace where precise adjustments can be made before conversion to a "positive" file format such as TIFF or JPEG for storage, printing, or further manipulation, which often encodes the image in a device-dependent colorspace. Raw files are so named because they are not yet processed and therefore are not ready to be printed or edited with a bitmap graphics editor. x3f ( Sigma)Ī camera raw image file contains minimally processed data from the image sensor of either a digital camera, image or motion picture film scanner.
For the raw disk image format, see IMG (file format).
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