Yes, it is an issue with picture quality in Windows Photo Gallery !
After I installed Vista, pictures started to look odd, started thinking my
digital EOS was wrong, bad focus, settings; all pictures looked blury,
over-saturated, too dark, gamma was all wrong, and it looks almost like 16 or
8 bits colours ... ! really obvious in shadow or dark parts of a picture. I
even started to test my EOS camera to see what the *@# was wrong. My reliefe
when I finally started to suspect WPG and I got good old Thumbs Plus
installed - picture quality back to normal. So, the problem has to be Windows
Photo Gallery. No settings that I can see to fix this. No updates to
download. A shame.
PS: Of course you cannot use the edit picture feature, like some suggested
here. That would only alter picture when the problem is not the picture
itself. Result would be quite random.
> I have been disturbed for some time now with the poor image quality displayed
> in Windows Photo Gallery. Photos appear over-saturated and darker in WPG
> than any other display vehicle (eg: Photoshop, Windows Mail, IExplorer, MS
> Word).
>
> In researching this problem, I found others expressing the same problem WPG,
> but saw no solution. Most responses I saw suggested ignoring WPG and instead
> using a 3rd party program such as Google’s “Picasa”.
>
> What I like about WPG is that it’s a quick and light-weight program for
> viewing photos, and am hoping that someone out there can shed some light on
> what the problem is with WPG, and how do I correct it?
>
> A sample image comparison: left side image in PhotoShop; right side image in
> WPG.
> http://localsbackyard.com/wpg.jpg
>
> TIA for any suggestions and/or solutions!
>
> Gee
>