Bug #965

Pentax K-3 MakerNote not recognized due to different maker tag

Added by Javier Celaya over 3 years ago. Updated over 2 years ago.

Status:ClosedStart date:20 Jun 2014
Priority:NormalDue date:05 Nov 2014
Assignee:Niels Kristian Bech Jensen% Done:

100%

Category:metadata
Target version:0.25

Description

The MakerNote tag in Pentax K-3 raw files (maybe other recent Pentax cameras), both DNG and PEF, is not recognized by Exiv2 because the Make tag says "RICOH IMAGING COMPANY, LTD." instead of "PENTAX Corporation". If I change the Make tag to anything that says PENTAX, the MakerNote is recognized, but this might break other metadata readers.

You may find sample raw files here:
http://www.photographyblog.com/reviews/pentax_k3_review/sample_images/
http://www.pentaxforums.com/news/pentax-k-3-full-size-samples.html

ricoh-pentax.patch Magnifier (843 Bytes) Pascal de Bruijn, 04 Nov 2014 18:18


Related issues

Related to Exiv2 - Bug #1135: Read Makernotes Closed 12 Nov 2015

Associated revisions

Revision 3385
Added by Niels Kristian Bech Jensen about 3 years ago

Fix bug #965: Pentax K-3 MakerNote not recognized due to different maker tag. Thanks goes to Pascal de Bruijn for the patch. Beware that this will have to be changed if Ricoh makernote support is added.

History

#1 Updated by Robin Mills over 3 years ago

  • Category set to metadata
  • Status changed from New to Assigned
  • Assignee set to Niels Kristian Bech Jensen
  • Priority changed from Low to Normal
  • Target version set to 0.25

I'm assigning this to Niels for comment.

#2 Updated by Phil Harvey over 3 years ago

The K-3 and 645Z have make "RICOH IMAGING COMPANY, LTD.".

The M-1, WG-3 and WG-10 have make "PENTAX RICOH IMAGING".

All use the same format maker notes that start with "PENTAX \0", so this is the better thing to key on.

#3 Updated by Pascal de Bruijn about 3 years ago

So at least a short term fix seems rather trivial, please see attached patch.

#4 Updated by Pascal de Bruijn about 3 years ago

Note: I did actually test the above patch with a K-3 PEF and DNG.

#5 Updated by Niels Kristian Bech Jensen about 3 years ago

  • Due date set to 05 Nov 2014
  • Status changed from Assigned to Resolved
  • % Done changed from 0 to 100

Hi Pascal.

Thanks for the patch. I have commited it to the svn trunk.

Beware that this will have to be changed if makernote support for older Ricoh cameras is added to Exiv2.

Best regards,
Niels Kristian Bech Jensen

#6 Updated by Andreas Huggel over 2 years ago

  • Status changed from Resolved to Closed

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