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Digital Negative (file format)
In digital photography, the Digital Negative (DNG) file format is a royalty free RAW image format designed by Adobe Systems. Its specification was announced on September 27, 2004. The same day, Adobe introduced Digital Negative to the market with its free Adobe DNG Converter program. According to Adobe, Digital Negative was a response to demand for a unifying camera raw file format. Digital Negative is based on the TIFF/EP format, and mandates use of metadata. All Adobe photo manipulation software (such as Adobe Photoshop and Adobe Lightroom) released since the announcement supports DNG.
Digital Cameras which support DNG
• Hasselblad supports DNG, but only as an output format via software on their V96C digital Back for the 503CW camera body.
• Leica's Digital-Modul-R for the R8 or R9, as well as the M8 and the Digilux-3 natively support the DNG format.
• Ricoh supports DNG in the Digital GR, considered a professional compact.
• Samsung supports DNG in their Pro815 "prosumer" camera and GX-10 DSLR camera.
• Pentax supports DNG in their K10D DSLR camera.
Software that supports DNG
Besides Adobe Photoshop, several other software programs provide read and sometimes write support for DNG files including: GIMP, ImageMagick, ExifTool.
As of 2007-01-29, Hamrick's VueScan application for Mac OS X & Windows, beginning with version 8.4.05, adds support for writing DNG files from a flatbed or film scanner, as well as reading it from suitable digital cameras.
Adobe DNG Converter is published by Adobe Systems on September 27, 2004. It converts different camera raw format files into the Digital Negative (DNG) standard. It also supports lossless data compression when converting. The program is free of charge, but not open source. It can be downloaded at Adobe's site (Win and Mac).