Digital BW, The Print

Not at all off topic, and a good reminder about all the "subtle" visual 
discriminations we make about inks, papers, tonal scale, etc.  Thanks.  


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "coovert1912" 
<backstagepass55@a...> wrote:
> http://web.mit.edu/persci/people/adelson/checkershadow_illusion.html
> 
> As everyone here lives in grayscale I thought this was interesting. I 
> hope its not too off topic. I even took it into photoshop and 
measured 
> it and I still don't belive it...Robert