The following are the results of various color imaging media tests for dye stability. The media was cut in half. One half was put in full sun for 6 months. The other half was stored in the dark.
After 6 months the 2 halves were married and scanned. No PP was done except for cropping and jpeg reduction. The half in the sun was marked with an ‘S’. The half stored in the dark was marked with a ‘D’.
I was first clued into using the sun for such tests by the late Bob Pace. I worked with Bob Pace at Graphic Process Co. in Hollywood, CA in the 1970’s. When showing him a fine Agfacolor print I had made the day earlier he agreed the colors were great. But he told me to put it in the sun for a few weeks and see what happened. Sure enough, it faded like hell in no time.
Regarding Ilfochrome aka Cibachrome prints.
I had purchased a Cibachrome print on Ebay to test, but it arrived late. And when it did arrive, I found it to be misrepresented and not even a Cibachrome. So I was not able to include one in this test.
But I had extensive experience with Cibachrome during my work at Graphic Process Co. We kept gigantic Cibachrome’s in the front window at GP and they got blasted with L.A. sun year round. They cracked up…but never faded. Cibachromes have just superb color stability.
This report is dedicated to Bob Pace (pictured above) - dye transfer printer par excellence and founding father of this test.
Shown above is one of the oldest surviving Eastman Kodak Dye Transfer prints on record. Mae West is still going strong after nearly 80 years!