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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.
The raw file (left) before highlight and shadow details were recovered using the levels tool (right) When a camera saves a raw file it defers most of this processing; typically the only processing performed is the removal of defective pixels (the DNG specification requires that defective pixels be removed before creating the file [36]).
Live histograms and highlight-clipping indicators, which are almost always based on the processed JPEG rather than on the raw data, might indicate highlights are blown when in fact they are not and could be recoverable from a raw file. Therefore, it can be difficult to expose properly to the right without risking inadvertently blown highlights. [7]
Adobe Systems has released the DNG format, a royalty-free raw image format used by at least 10 camera manufacturers. Raw files initially had to be processed in specialized image editing programs, but over time many mainstream editing programs, such as Google's Picasa, have added support for raw images. Rendering to standard images from raw ...
The Nokia N900 mobile phone has an add on app "Fcam", which allows capture and saving of RAW files in Adobe's DNG format (along with other advanced features usually found in DSLRs). In 2013, Nokia launched Nokia Lumia 1520 and Nokia Lumia 1020 smartphones with DNG RAW format.
Camera file systems can usually be accessed by directly mounting them via the USB mass storage device class protocol, which exposes the file layout, whether DCF compliant or otherwise. Alternatively, and independent of DCF, files may be accessed via the Picture Transfer Protocol , which provides an object-oriented view and need not expose the ...
These CinemaDNG files are supported by Blackmagic Design's own DaVinci Resolve software, slimRAW and Fast CinemaDNG Processor. The adoption of compressed CinemaDNG among camera manufacturers appears to be hindered by Red Digital Camera’s patent US9245314, which covers in-camera recording of compressed raw video.
Such RAW codecs are currently available from Canon, Nikon, Olympus, Pentax, Sony and for Adobe DNG. Many applications on Mac OS X use either the Core Image or QuickTime APIs for image support. This enables reading and writing to a variety of formats, including JPEG , JPEG 2000 , Apple Icon Image format , TIFF , PNG , PDF , BMP and more.