Ahhh, didn't even think of that. There's so much of this, that I still don't know, or even think of.
Weird... I us a 135mm lens on my Beseler, and printed at 20 sec@f32 and got a nice looking print. So, I tried my 90mm, because I didn't have a 50, and I had to expose it for 2 minutes at f22, using the same 3.5 filter I've been using for contrast.
Why the big difference in time?
BTW, here is the full neg version
Because you're taking less light (smaller section of negative) and spreading it over the same size print.