Quote Originally Posted by 2F/2F View Post
I standardize on a flatter-than-normal negative by calibrating to a grade 3 paper... I started doing this simply due to the slim selection of graded materials...
That's the exact reason why I did this, because I can only get grades 2 and 3.

Quote Originally Posted by RalphLambrecht View Post
... But when you are talking 1/2-grade differences, the question becomes: How do you know what paper grade you are getting from your filter or filtration method?
I'm using graded papers. I expect variations of 1/2 grade in either direction. I just don't want to fall off the papers.