Quote Originally Posted by padraigm View Post
How did your 4 min development look? Are most of the steps blank?
My shortest time was 6 min due to my 1:3 dilution. You should still see density in the 19/20 steps as these are your shadow areas and will develop first. They will increase in density as your dev times increase, but not as much as the highlight areas.

To get the correct exposure, you are going to have to trial and error it. That's critical if the measurements are to have any meaning.

I wasted a bunch of sheets to get it right!