Format
Digital Negative Format (DNG)
Summary
- Name
- Digital Negative Format (DNG)
- Version
- 1.3
- Identifiers
-
- PUID: fmt/438
- MIME: image/tiff
- Format type
- Image (Raster)
- Disclosure
- Full
- 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 6.0 format, and is compatible with the TIFF-EP standard. This version, published June 2009, added various improvements, but the major change was to introduce "Opcodes". An Opcode and any associated parameters identifies a specific process to be applied to some or all of the raw image data during the conversion process.
- File extensions
-
dng - Source
- Adobe Systems Incorporated
Relationships
- Has lower priority than
- Has priority over
- Is previous version of
- Is subsequent version of
- Is subtype of
- Is supertype of
Internal signatures
DNG 1.3 (big-endian, BOF)
- Note
- TIFF header plus DNGVersion tag near BOF
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
4D4D002A{0-4080}C61200010000000401030000- Endianness
- Big-endian
DNG 1.3 (little-endian, BOF)
- Note
- TIFF header plus DNGVersion tag near BOF
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
49492A00{0-4080}12C601000400000001030000- Endianness
- Little-endian
DNG 1.3 (little-endian, BOF+EOF)
- Note
- TIFF header plus DNGVersion tag near EOF
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
12C601000400000001030000- Endianness
- Little-endian
DNG 1.3 (big-endian, BOF+EOF)
- Note
- TIFF header plus DNGVersion tag near EOF
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
C61200010000000401030000- Endianness
- Big-endian
Changelog
-
Updated in V116
- Release date
- 23 November 2023
Digital Negative Format (DNG) 1.3: Max-offset increased to 128000 bytes for EOF signatures and MIME type of 'image/dng' added. Submitted by Brigham Young University.
-
Updated in V82
- Release date
- 27 March 2015
Digital Negative Format (DNG) 1.3: Set priority over Nikon Digital SLR Camera Raw Image File due to potential for clash.
-
Updated in V66
- Release date
- 18 December 2012
Digital Negative Format (DNG) 1.3: Corrected priority information to avoid multiple identification clashes with TIFF identified by Ross Spencer.
-
Added in V60
- Release date
- 11 June 2012
DNG 1.3 (little-endian, BOF): Signature developed through PRONOM Research.
DNG 1.3 (little-endian, BOF+EOF): Signature developed through PRONOM Research.
DNG 1.3 (big-endian, BOF): Signature developed through PRONOM Research.
DNG 1.3 (big-endian, BOF+EOF): Signature developed through PRONOM Research.
Digital Negative Format (DNG) 1.3: Full entry added.