Format
Digital Negative Format (DNG)
Summary
- Name
- Digital Negative Format (DNG)
- Version
- 1.1
- Identifiers
-
- PUID: fmt/152
- MIME: image/tiff
- Format type
- Image (Raster)
- Description
- The Digital Negative (DNG) Specification describes a non-proprietary file format for storing camera raw files that can be used by a wide range of hardware and software vendors. DNG is an extension of the TIFF format, and is compatible with the TIFF-EP standard. This version was published in February 2005 and corrected the flaws in the first version. It has proved capable of representing raw images for a large variety of cameras (both when written in-camera or via conversion from other raw image formats) for a few years, and it is the version still typically written in-camera.
- Format encoding
- Text
- File extensions
-
dng,tif,tiff - Submitted by
- Digital Preservation Department / The National Archives
Relationships
- Has priority over
- Is previous version of
- Is subsequent version of
- Is subtype of
Internal signatures
DNG 1.1 (little-endian, BOF)
- Description
- TIFF header plus DNGVersion tag near BOF
- Provenance
- Digital Negative (DNG) Specification Version 1.3.0.0 http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/products/photoshop/pdfs/dng_spec.pdf
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
49492A00{0-4080}12C601000400000001010000- Endianness
- Little-endian
DNG 1.1 (little-endian, BOF+EOF)
- Description
- TIFF header plus DNGVersion tag near EOF
- Provenance
- Digital Negative (DNG) Specification Version 1.3.0.0 http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/products/photoshop/pdfs/dng_spec.pdf; 11/2023 (v.116)- EOF max-offset increased to 128000. Submitted by Brigham Young University.
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
49492A00- Endianness
- Little-endian
- Min Frag Length
- Absolute from EOF
- Offset
- 0
- Max offset
- 128000
- Byte Sequence
12C601000400000001010000- Endianness
- Little-endian
DNG 1.1 (big-endian, BOF)
- Description
- TIFF header plus DNGVersion tag near BOF
- Provenance
- Digital Negative (DNG) Specification Version 1.3.0.0 http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/products/photoshop/pdfs/dng_spec.pdf
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
4D4D002A{0-4080}C61200010000000401010000- Endianness
- Big-endian
DNG 1.1 (big-endian, BOF+EOF)
- Description
- TIFF header plus DNGVersion tag near EOF
- Provenance
- Digital Negative (DNG) Specification Version 1.3.0.0 http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/products/photoshop/pdfs/dng_spec.pdf; 11/2023 (v.116)- EOF max-offset increased to 128000. Submitted by Brigham Young University.
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
4D4D002A- Endianness
- Big-endian
- Min Frag Length
- Absolute from EOF
- Offset
- 0
- Max offset
- 128000
- Byte Sequence
C61200010000000401010000- Endianness
- Big-endian
Changelog
-
V116
- Release date
- 23 November 2023
-
Updated
Digital Negative Format (DNG) 1.1: Max-offset increased to 128000 bytes for EOF signatures and MIME type of 'image/dng' added. Submitted by Brigham Young University.
-
V105
- Release date
- 29 June 2022
-
Updated
Digital Negative Format (DNG) 1.1: Changed maximum offset in signature to the TIFF header and DNGVersion tag near EOF from 4084 to 10000 bytes. Submitted by Digital Repository, Historic Environment Scotland.
-
V103
- Release date
- 11 March 2022
-
Updated
Digital Negative Format (DNG): Changed maximum offset of 'TIFF header plus DNGVersion tag near EOF' from 4084 to 6000 bytes. Submitted by Digital Repository, Historic Environment Scotland.
-
V82
- Release date
- 27 March 2015
-
Updated
Digital Negative Format (DNG) 1.1: Set priority over Nikon Digital SLR Camera Raw Image File due to potential for clash.
-
V60
- Release date
- 11 June 2012
-
Added signature
DNG 1.1 (little-endian, BOF): Signature developed through PRONOM Research.
DNG 1.1 (little-endian, BOF+EOF): Signature developed through PRONOM Research.
DNG 1.1 (big-endian, BOF): Signature developed through PRONOM Research.
DNG 1.1 (big-endian, BOF+EOF): Signature developed through PRONOM Research.
-
Updated
Digital Negative Format (DNG) 1.1: Description added. Priority information added to avoid potential mis-identification with Tagged Image File Format, Tagged Image File Format for Electronic Photography (TIFF/EP), Exchangeable Image File Format (Uncompressed) 2.0, Exchangeable Image File Format (Uncompressed) 2.1, Exchangeable Image File Format (Uncompressed) 2.2.