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Private TIFF Tag RawDataUniqueID

TIFF Tag RawDataUniqueID

IFDImage
Code50781 (hex 0xC65D)
NameRawDataUniqueID
TypeBYTE
Count16
DefaultNone

Description

Used in IFD 0 of DNG files.

This tag contains a 16-byte unique identifier for the raw image data in the DNG file. DNG readers can use this tag to recognize a particular raw image, even if the file's name or the metadata contained in the file has been changed.

If a DNG writer creates such an identifier, it should do so using an algorithm that will ensure that it is very unlikely two different images will end up having the same identifier.

See also

DNG Specification