[Digikam-devel] [digikam] [Bug 205776] Option to load full image size in preview mode does not only do what it says with RAW files

[Vincent Tassy]

https://bugs.kde.org/show_bug.cgi?id=205776

Vincent Tassy <timetre at free.fr> changed:

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                 CC|                            |timetre at free.fr

--- Comment #60 from Vincent Tassy <timetre at free.fr> ---
Following up on the discussion in the mailing list and using Digikam 4.4.0 on
Fedora 20:

Looking at the code, the choice of using the embedded JPG or Half Size Raw
Preview depends (between other things) on the screen
resolution ...

It turns out my home 27" monitor is 2560x1440 and the Embedded JPG in the Canon
S100 RAW files are 1600x1200.
Digikam therefore displays the Half Size Raw Preview no matter the setting in
the preferences.
Similar behaviour for the Canon 400D RAW files whose embedded JPG are 2.5Mpx
:-(
If I change my screen resolution to, say, 1920x1080, it displays the Embedded
JPG !

However, the Embedded JPG of my Canon 60D CR2 are 17Mpx so for these RAW files
it will indeed display the embedded JPG ...

The thing is that if I manually extract the 1600x1200 JPG embedded in my RAW
file and display it in digikam, it's just fine ! on my screen, it's zoomed at
96% so it's completely acceptable to view images of this size as previews !

I'm therefore thinking that the heuristics are not good as is ... Maybe choice
should be left to the end user by the addition of a second checkbox in the
settings (as suggested in other comments) ?

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