Quote Originally Posted by JBrunner View Post
Old commercial guys liked me used Polaroid, yes, but we certainly didn't base our exposures off of it. It served several purposes, mostly for client cooing and composition discussions. I never once based an exposure off of it.
This also makes a lot of sense...

Without trusting the exposure, you can check all kinds of things. The lights are in the right place, no unfortunate shadows... Have a chance to catch things that you can see in the photograph that shouldn't be there, like backdrops in the wrong place. Just "see" if the picture has a chance to work at all.