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Digital Negative (DNG)
File extension:	.dng
Developed by:	Adobe Systems
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 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.

The following digital cameras support DNG, as of July 2007.^[3]

• Hasselblad supports DNG, as an output format via software^[4] on their V96C digital back for the 503CW camera body and in the Hasselblad H-2D^[5] one; also the CF and CFH.
• Leica's Digital Modul R^[6] for the Leica R8 or Leica R9, as well as the Leica M8 and the Leica Digilux 3 natively support the DNG format.
• MegaVision E Series Monochrome back.
• NuCoreTech PEK reference platform.
• Pentax supports DNG in their K10D DSLR camera.
• Ricoh supports DNG in the Ricoh Digital GR^[7], considered a professional compact, and the Ricoh Caplio GX^[8].
• Samsung supports DNG in their Samsung Pro815^[9] "prosumer" camera and Samsung GX-10 DSLR camera.
• Sea&Sea DX‐1G^[10] underwater camera.
• Seitz Roundshot D3^[11] digital back, used in cameras such as the 6×17.
• Silicon Imaging Silicon Imaging Digital Cinema SI-1920HDVR^[12].

Besides Adobe Photoshop, several other software programs provide read and sometimes write support for DNG files including: GIMP, FuturixImager, ImageMagick, ExifTool.^[13]

As of January 29, 2007, 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).

• RAW image format
• Comparison of image viewers
• DNxHD codec
• dcraw
• XMP
• other digital negative formats

1. ^ Adobe Systems (September 27, 2004). Adobe Unifies Raw Photo Formats with Introduction of Digital Negative Specification. Press release.
2. ^ Kathy White. "Adobe Pushes DNG Image Format", Publish Magazine, March 15, 2005. 
3. ^ PEARSON, Barry. Manufacturers.
4. ^ http://www.hasselblad.co.uk/products/promotions.asp?secId=857&itemId=3644
5. ^ http://www.hasselblad.com/products/h-system/h2.aspx
6. ^ Leica Digital Modul R.
7. ^ http://www.ricoh.com/r_dc/gr/gr_digital/index.html
8. ^ http://www.ricoh.com/r_dc/caplio/gx100/
9. ^ http://www.samsungcamera.com/product/pro_view.asp?prol_uid=601&cat_uid=9
10. ^ http://www.seaandsea.com/DX-1G/
11. ^ http://www.roundshot.ch/xml_1/internet/de/application/d438/d925/f933.cfm
12. ^ http://www.siliconimaging.com/DigitalCinema/key_features.html
13. ^ Complete list of the software editors which informed Adobe of their products compatibility.

• Cohen, Peter. "Adobe offers Camera Raw update, Universal DNG Converter", Macworld, September 19, 2006. Retrieved on 2006-12-03. 

• Official Adobe DNG page
  • Digital Negative Specification v. 1.1.0.0 (February 2005)
  • Introducing the Digital Negative Specification
  • Introducing the Digital Negative Specification: Information for Manufacturers
  • DNG hardware and software support

• Nixon, Stuart. Notes on the future of Open RAW formats, and a look at DNG (was: DNG Is Not the Answer). The OpenRAW Working Group. Retrieved on 2006-12-28.
• Pearson, Barry. DNG articles and links. Retrieved on 2006-12-28.
• Pearson, Barry. Commentary on Stuart Nixon's "DNG is not the answer". Retrieved on 2006-12-28.