[Titan]

Originally Posted by RobArtLyn

http://en.wikipedia.org/wiki/Reciprocity_(photography)

and then hit the really technical description here:

http://micro.magnet.fsu.edu/primer/p...mexposure.html

Wow, just wow. That's a lot of info. Thanks.

Also, just as a side note, the wikipedia entry link you posted does not work, I think it's because the close parenthesis isn't attached to the link. But when you go to wiki and type in Reciprocity (photography) it works just fine. Thanks again for sharing. Lots to learn, better get going.