I’ve decided to rework all pages and started with showrooms — they are the most simple of main three types of content (without skins or layouts, I have to find a way to deal with those later).
This one is pretty OK since I used TIFF, 96 bits per pixel (93 MB)
Just a big JPEG, and, as a result, poor quality (5.5 MB)
In the other side everything is messed up, but this one is quite acceptable, TIFF (114 MB)
I can’t adjust exposure/gamma for TIFF (why they are different?!), so this one is DDS (205 MB)
JPEG, looks good only with this sphere (6 MB)