[Digikam-devel] [Bug 182013] sensitivity is not shown for rw2 files

Matthias Welwarsky matze at welwarsky.de
Thu Feb 5 08:05:18 GMT 2009


http://bugs.kde.org/show_bug.cgi?id=182013





--- Comment #20 from Matthias Welwarsky <matze welwarsky de>  2009-02-05 09:05:17 ---
(In reply to comment #15)
> The latest revision in the Exiv2 repository improves RW2 decoding:
> http://dev.exiv2.org/repositories/revision/exiv2/1740
> + there is now a dedicated tag table for the IFD0 tags in these images
> + additional Exif data from the embedded preview image is decoded
> 
> The ISO speed is now labeled but there is still no lens information. Chances
> are that it's there somewhere just not yet reverse-engineered.
> 
> I appreciate if you test with more RW2 images but also all other formats.
> 

I've tested the new release, there's much more information now extracted from
the RW2 files. However, a bit too many. Not all data from the embedded preview
image applies to the raw data, for example:

White balance information - doesn't apply to raw data, the processing software
needs to apply that
Sharpness, Contrast, Saturation, Film mode - also not applicable to RAW data,
these are attributes of the cameras' JPEG rendering process
Digital Zoom - also not applicable to RAW data. It should display "0" anyway, I
think no camera allows enabling digital zoom while shooting RAW.

Not a comprehensive list, I'll make one this weekend.

> -ahu.
> 


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