Undersized IFD0 StripByteCounts error when modifying ORF (OM-D E-M1 Mk II)

[lintujuh]

When I try to modify an ORF (straight from the camera) with exiftool 11.10 I get an error of undersized IFD0 StripByteCounts and exiftool refuses to make the updates unless I specify -m option. With exiftool 11.01 there are no messages. Is there a bug in the Olympus RAW file format or in exiftool?

$ exiftool -ImageDescription= P5140403.ORF
Error: [minor] Undersized IFD0 StripByteCounts (17442694 bytes, but expected 40997760) - P5140403.ORF
    0 image files updated
    1 files weren't updated due to errors

I can send you an example if you need.

-Juha

[StarGeek]

Phil is AFK at the moment, so it will probably be a few days before you will get a response on this.

[Phil Harvey]

Hi Juha,

Version 11.04 added a check on the size of the image data.  It is likely that Olympus is writing some related tags incorrectly.  Either that or is just not following the TIFF specification for their RAW file format (which is of course entirely their prerogative).  Thanks for the feedback.  I'm still evaluating the usefulness of this additional check, and may consider removing it if it causes too many problems like this.

- Phil

[Phil Harvey]

ExifTool 11.11 makes this a minor warning (not an error) for ORF files, since this seems to be normal for them.

- Phil

[lintujuh]

Great! Thank you!

-Juha