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Digital Negative (DNG) is an open, lossless raw image format developed by Adobe and used for digital photography.It was launched on September 27, 2004. [1] The launch was accompanied by the first version of the DNG specification, [2] plus various products, including a free-of-charge DNG converter utility.
Some Nikon Coolpix cameras which are not advertised as supporting a RAW image format can actually produce usable raw files if switched to a maintenance mode. [26] Note that switching to this mode can invalidate a camera's guarantee. Nikon models with this capability: E700, E800, E880, E900, E950, E990, E995, E2100, E2500, E3700, E4300, E4500.
However, they have repeatedly emphasized that it will be an open format, and Adobe has stated "CinemaDNG uses fully-documented, vendor-neutral, standard formats for video and imaging – DNG, TIFF/EP, and MXF. The format is unencrypted and free from intellectual property encumbrances or license requirements". [30]
Adobe: Understanding Raw Files"; background on how camera sensors treat raw files; Open RAW: a working group of photographers, software engineers and other people interested in advocating the open documentation of digital camera raw files; Atkins, Bob: "Raw, JPEG, and TIFF"; common file formats compared.
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Because many raw image formats are specific to one make or model of camera, dcraw is frequently updated to support new models. For many proprietary raw image formats, dcraw's source code (based largely on reverse-engineering) is the best—or only—publicly available documentation. dcraw currently supports the raw formats of several hundred ...
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