Hi, I use zpgalleriffic theme with zenphoto and I noticed that when the photos are displayed in the preview size in front of the thumbnails, they are less saturated than in the full size mode. Zpgalleriffic is not the only one theme having this issue.
Does somebody know why this is happening, and how one can manage to keep in preview size the same density that photos have in full size?

Thank you,

Jean-Pierre

http://www.compostela.us/zenphoto/

This is neither a Zenphoto nor a theme problem. It has to do with color management of images and that except some newer browser no browser supports color profiles. We had this topic quite a lote before so I suggest to do a forum search (or even a web search) on this. Since I just notice we don'T have a troubleshooting entry about this I searched those topics:
http://www.zenphoto.org/support/topic.php?id=3293#post-19712
http://www.zenphoto.org/support/topic.php?id=2606#post-15562
http://www.zenphoto.org/support/topic.php?id=3360#post-20139

You should prepare images for hte web in sRGB mode as the image resizing in Zenphoto (done on the server by its libaries) does not preserver profiles (GD is not able, and the Imagick processing has currently a small bug)

In general color management is a quite complicated matter.

If am not mistaken, when using ImageMagick this should be resolved in Zenphoto 1.3.2

http://www.zenphoto.org/trac/ticket/1575

Yep, it was fixed for 1.3.1.

Oh, I thought this would be coming in a future Zenphoto release, as the ticket reads "Milestone: 1.3.2".

Now I took a look at photos with Adobe RGB profile and indeed thumbnails retain the ICC profile.

Thank you very much for this!