Colour cast of thumbnails is "pinkish" compared to main image, in FireFox

hoob

Recently posted a gallery with pictures from a trip to Utah, with lots of red/beige rock pictures. I've noticed that the thumbnails SM creates for these colours all seem to have a pinkish tinge compared to the actual pictures.

I've sure it's something about colour/RGB space but I can't figure out why in Firefox it would affect only the thumbnails.

1. In Firefox, thumbnail is pinkish and full image is "correct"
2. In Internet Explorer, both thumbnail and full image are pinkish
3. In Chrome with --enable-monitor-profile command line option, both thumbnail and full image are correct.


By "correct" I'm referring to the look of the image in Adobe Lightroom on the same system. Running on a Dell U2711 monitor with a custom calibration profile.

As an example, I took a screen capture viewing my gallery in FF7: http://hoob.smugmug.com/Random/Stuff/i-88sc7Q5/0/XL/pinkish-XL.jpg

Note how the thumbnail for the rock is pink/peachish compared to the actual picture on the right. Is something in the smugmug thumbnail generation not setting the RGB space correctly or otherwise having problems making the images?

rainforest1155

That's likely due to how the color management works in the different browsers. Thumbnails don't contain any color profile as to keep them small and fast as color profiles can be larger than the actual thumbnail. It looks as if Firefox doesn't color manage photos without a color profile. Here's a page describing the Firefox color management option:
http://kb.mozillazine.org/Gfx.color_management.enabled
You could change the default and have Firefox color manage all photos.

Internet Explorer doesn't support color management as far as I know.

hoob

Changing gfx.color_management.mode from 2 to 1 fixed the problem for me. Now the thumbnails and the full images render correctlyin Firefox. Thanks!In IE I don't care so much

rainforest1155

That's great to hear!