Both images were printed at the same time, on the same piece of Epson Heavyweight Matte paper.
The bottom print was stored in a ziplock bag, in a dark closet. The one on top was exposed to the "UV" test.
You can see that the gray scale turned brown. You can't see that the paper stock yellowed, too.
But remember, the print in the ozone chamber didn't shift at all.
The images were scanned in one pass. The scanner is a Microtek E6. All automatic adjustment settings
were disabled.
