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Bug 316665 - "MakerNotes" info from EXIF header is not present
"MakerNotes" info from EXIF header is not present
Status: RESOLVED FIXED
Product: gthumb
Classification: Other
Component: general
2.6.x
Other All
: Normal normal
: ---
Assigned To: Paolo Bacchilega
Paolo Bacchilega
Depends on:
Blocks:
 
 
Reported: 2005-09-18 21:32 UTC by Paul Ionescu
Modified: 2006-08-14 17:30 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description Paul Ionescu 2005-09-18 21:32:54 UTC 
Distribution/Version: FC4

When inspecting EXIF info, the "MakerNotes" info is not present, even if there
is support in libexif for listing "MakerNotes" info.

In my example, I have a Canon which set the ISO Speed value only in the
"MakerNotes" block, and the only way to see this value is to properly display
the "MakerNotes" info.
Also, there is a lot of other interesting info in the "MakerNotes" fields.

I can supply more info if needed.
Comment 1 Paolo Bacchilega 2005-09-21 08:24:17 UTC 
fixed in CVS, thank you.
Comment 2 Paul Ionescu 2005-09-22 21:57:45 UTC 
Hello Paolo,

I just downloaded and compiled gthumb v.2.6.8 which is supposed to fix this bug,
and now I got this field:

MakerNotes : 1208 unknown data

instead of their actual interpretation.
I can provide a test canon picture (.jpg) if needed.

Thanks,
Paul
Comment 3 Paolo Bacchilega 2005-09-23 07:05:08 UTC 
exif fields are interpreted by the libexif library, see here:
http://libexif.sourceforge.net/
Comment 4 Jef Driesen 2006-08-14 17:30:34 UTC 
With libexif, the MakerNotes need to be handled separatly from the normal EXIF tags. And gThumb does not do that. You need to use exif-data.h/exif_data_get_mnote_data and the functions in exif-mnote-data.h.