TIFF Tag OriginalRawFileName
|Code||50827 (hex 0xC68B)|
|Type||BYTE or ASCII|
Used in IFD 0 of DNG files.
If the DNG file was converted from a non-DNG raw file, then this tag contains the file name of that original raw file.
The DNG specification defines the value of this tag to be a UTF-8 encoded Unicode string, with a null byte terminator. Note that this is different from normal ASCII TIFF tags, in that it's not necessarily limited to ASCII. The tag Count is the byte count of this UTF-8 string, including the null byte terminator, and not the character count.