Bug 265726

Summary:	digiKam doesn't detect lens type
Product:	[Applications] digikam	Reporter:	Romain Henriet <romain.pub>
Component:	Metadata-Exif	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	RESOLVED FIXED
Severity:	minor	CC:	ahuggel, caulier.gilles
Priority:	NOR
Version:	1.8.0
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed In:	7.3.0

Description Romain Henriet 2011-02-07 21:41:07 UTC

Version:           1.8.0 (using KDE 4.6.0) 
OS:                Linux

I have DNG raw and JPG images made with Pentax K-x, and Digikam is not able to read lens model.
However "exiftool image.DNG | grep Lens' gives correct information :
Lens Type                       : Tamron AF 17-50mm F2.8 XR Di-II LD (Model A16)
Lens F Stops                    : 7
Lens ID                         : Tamron AF 17-50mm F2.8 XR Di-II LD (Model A16)

Reproducible: Always

Steps to Reproduce:
Open a DNG or JPG image that have been taken with Pentax K-x

Actual Results:  
For DNG, Lens is "unavailable"
For JPG, Lens is "7 230 0 0"

Expected Results:  
Display lens model in photo's properties

Comment 1 caulier.gilles 2011-02-07 22:36:07 UTC

Please provide file samples to test. Thanks in advance

Gilles Caulier

Comment 2 Romain Henriet 2011-02-07 22:58:38 UTC

Here are samples : http://dl.free.fr/rXix99Wa3

Thanks,
Romain

Comment 3 caulier.gilles 2011-02-08 10:35:17 UTC

Romain,

digiKam delegate lens info extraction to Exiv2 library.

With Exiv2 0.21, lens is detected from JPEG, but not with DNG.

http://www.flickr.com/photos/digikam/5427807052/sizes/o/in/photostream/

Lens information is hosted in Pentax makernotes. Makernotes are decoded properly from JPEG, but not from DNG. This is the problem.

So, it's relevant of Exiv2 library. Please report it at Exiv2 bugzilla (http://www.exiv2.org)

Gilles Caulier

Comment 4 Romain Henriet 2011-02-08 21:00:02 UTC

ok, thank you

Comment 5 caulier.gilles 2011-02-08 21:57:02 UTC

Romain,

I see you entry :

Bug #758: Exiv2 doesn't detect lens model in Pentax k-x DNG files
http://dev.exiv2.org/issues/758

Let's me hear when this entry will be fixed to test with digiKam

Gilles Caulier

Comment 6 Romain Henriet 2011-02-08 21:59:09 UTC

ok, no problem

Comment 7 caulier.gilles 2011-12-17 09:26:10 UTC

Romain, 

What's new about this file ? It still valid using digiKam 2.x serie ?

Gilles Caulier

Comment 8 Romain Henriet 2011-12-17 11:45:44 UTC

Yes, I have Digikam 2.3.0 and lens is still "Unavailable". 
(Libexiv is 0.21).

Romain

Comment 9 caulier.gilles 2014-07-08 06:45:53 UTC

I close this file as UPSTREAM, as it's fully relevant of Exiv2 shared lib...

Gilles Caulier

Comment 10 caulier.gilles 2021-04-07 21:30:40 UTC

http://dev.exiv2.org/issues/758 is now closed.