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Feature #1215

Exif.CanonSi.SubjectDistance seems to be in centimeters

Added by Niccolo Rigacci almost 3 years ago. Updated almost 3 years ago.

Status:
Closed
Priority:
Normal
Category:
makernote
Target version:
Start date:
26 Aug 2016
Due date:
18 Sep 2016
% Done:

100%

Estimated time:
1.00 h

Description

Hi, I have a Canon PowerShot S120

Using exiv2 0.24 (libexiv2-13 0.24) on my Debian box I can read the Exiv metadata. Exif.CanonSi.SubjectDistance is reported without measuring unit, beacuse "units are not clear" (as reported here http://www.exiv2.org/tags-canon.html).

I think that unit is centimeters; I shot several photos in manual focus mode, setting approximately the focus on the LCD scalebar. The values registered into the Exif tag are:

zero -> 7
10 cm -> 14
20 cm -> 27
50 cm -> 54
 1 m  -> 102
 2 m  -> 200
 5 m  -> 606
infinity -> 6553

Reasonable values are also indicated for photos taken in auto-focus mode.

Associated revisions

Revision 4511 (diff)
Added by Niels Kristian Bech Jensen almost 3 years ago

Fix issue #1215: Exif.CanonSi.SubjectDistance unit.

Revision 4520 (diff)
Added by Robin Mills almost 3 years ago

#1215 Update test suite to respect format changes introduced by r4511 (Exif.CanonSi.SubjectDistance)

History

#1

Updated by Robin Mills almost 3 years ago

  • Tracker changed from Bug to Feature
  • Category set to makernote
  • Target version set to 0.28

Thanks for reporting this, Niccolo. We're trying to get to feature complete Exiv2 v0.26 at the moment. I'm going to defer this for v0.27.

#2

Updated by Niels Kristian Bech Jensen almost 3 years ago

  • Due date set to 18 Sep 2016
  • Status changed from New to Resolved
  • Assignee set to Niels Kristian Bech Jensen
  • Target version changed from 0.28 to 0.26
  • % Done changed from 0 to 100
  • Estimated time set to 0.00 h

Simple fix. Subject distances are now shown in meters.

Translation templates need to be updated during the release process though.

Best regards,
Niels Kristian Bech Jensen

#3

Updated by Robin Mills almost 3 years ago

  • Status changed from Resolved to Closed
  • Estimated time changed from 0.00 h to 1.00 h

Thank You for dealing with this, Niels. I'm going to close this.

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