"MakerNote" Exif tag of Casio digital cameras

Version of this document: 1.3 (August 24, 2000)

This page documents fields of the "MakerNote" tags of JPG files produced by Casio digital cameras.

It seems since summer 1999 Casio digital cameras write the MakerNote in the following format.

These camera models/versions have been proved to use this structure:

These camera models/versions have been proved NOT to use this structure:

It seems all versions of QV-3000EX use this structure. "Late" versions of QV-2000UX and QV-8000SX use this structure, "early" versions of QV-2000UX and QV-8000SX don't use this structure, they have a MakerNote containing only 4 bytes data.

This is an unofficial documentation!

MakerNote consists of 20 Exif tags. Every tag has 1 component. Values are in decimal format.

Remarks:

Due to "Exif" information the tag number 17 should be of data type "unsigned long". In fact the bytes 1 and 3 seem to be constant 0, bytes 2 and 4 seem not to increase 255. The field might consist of 2 values of "unsigned short" data type or of 4 values of "byte" data type.

Tag number 6 ("Object distance") should be treated as uncertain.

Some ideas the "unknown" tags might represent:

• battery level
• color modification (sepia, b/w)
• flash energy

If anybody has

• other informations
• verifications
• detected errors
• ideas

concerning items on this page please write us at support@dicasoft.de.

Please write us too if you decide to use these informations in your software development. So we can inform you if the informations should have been changed.

There is a small freeware tool using these informations: DiCaInfo.

Thumber uses these informations too (starting with version 3.2.1).

Other "MakerNote" documentations:

• Olympus D450Z (C-920Z) from Peter Esherick (Appendix 1 of "Description of Exif file format" from TsuruZoh Tachibanaya)
• Nikon 990 from Max Lyons