I have just started developing and enlarging my 4x5 B&W negatives. Last night I made a few test prints. I used 5x7 R.C. Glossy paper that came with my enlarger. I was able to make nice looking B&W prints after about 8 test prints, I would like to try making larger prints that are 8x10 and 11x14, my question is, how do I determine how much time I should add or what f stop I should go to, to print this size. Here is the technical information. Omega D-5 pro-lab 4x5 with a Nikon 135mm lens my exposure time was
3 sec at f11 to make a 5x7 print.
Thanks, Jacob
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