Digital Negative (file format)

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Digital Negative (DNG)
Image:DNG tm.svg
Filename extension .dng
Developed by Adobe Systems
Initial release 2004-09-27
Latest release / April 2008
Type of format raw image format
Container for Metadata may be embedded in XMP, Exif or IPTC formats.
Extended from TIFF/EP

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.[1] The same day, Adobe introduced Digital Negative to the market with its free of charge Adobe DNG Converter program. According to Adobe, Digital Negative was a response to demand for a unifying camera raw file format.[2] 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 support DNG.

Adobe is submitting DNG to ISO for standardization.[3]


[edit] Digital cameras

The following digital cameras support DNG, as of March 2008.[4]

Some of Canon cameras can shoot as DNG using an additional free software named CHDK.

[edit] Software that supports DNG

Besides Adobe Photoshop, several other software programs provide read support, and sometimes write support, for DNG files including: ACDSee Photo Manager, Aperture, ExifTool, DBGallery, DigiKam (0.10)[14], FuturixImager, ImageMagick, IrfanView, Adobe Lightroom, SilverFast DC, The GIMP, VueScan, XnView.[15]

Adobe DNG Converter was 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).

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