I am going to try a roll of Tri-X using the Skink Pinhole on my Nikon FM3a.
I did some internet homework and can take a few good guesses of exposure times. But I am wondering if anyone here has direct experience with Tri-X and a pinhole setup.
The Skink I have is 0.2mm diameter and I have a lost calculation that said the effective folcal length on my Nikon is about 50mm. (Where did I put that???) So the effective f-stop of the pinhole is f250.
I have Tri-x tables for exposure times and reciprocity adjustment. So I could start hitting the shutter button when the sun comes up tomorrow
Anyone care to comment on this topic, before I waste a roll of film ? ?
EDIT: I remember now - the Nikon flange-to-film distance is 46.5mm. I am using that as the pinhole "focal length". Any comments on that too?
The f-stop = 46.5 / 0.200 = 232.5mm
Thanks for any input.