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. 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 films into view able prints. The selection of the final choice of image rendering is part of the process of white balancing and color grading.
Miri Oil Well No.1
Sunset view from Grand Old Lady
Like photographic negative, a raw digital image may have a wider dynamic range or color gamut than the eventual final image format and its preserves most of the information of the captured image. The purpose of raw image formats is to save with minimum loss of information data obtained from the sensor and the conditions of the surrounding the capturing of the image.
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