Digital BW, The Print

Bob Frost wrote:

>George,
>
>I seem to remember reading that Kodak only uses 1/4 of the light in its fade 
>tests (compared with Wilhelm tests), so if that is so, it is not surprising 
>that Kodak prints last far longer!!
>
>Bob Frost
>
>  
>
Wilhelm thinks you should divide the Kodak claims by 15 to get near the 
ANSI/ISO tests that Wilhelm uses. That's for the ink + paper combination 
so may not be fully applicable on the same paper with another inkset. 
Read the Epson R800-R1800 test PDF on www.wilhelm-research.com

What's a lifetime divided by 15 ?

Ernst