There's a small discussion on it here.
I find the film has limited dynamic range so I personally haven't tried shooting it at anything other than box speed.
Why not? Film is designed to shoot a box speed.
It should be but sometimes isn't.
I've found best results are at 25 or even iso 12.
for me, it depends on the developer. for pyro-mc, I shoot at 32. for rodinal I shoot at 25. for Beutler I shoot at 50.
Remember, the ISO spec is designed with commercial processing - i.e. straight prints - in mind. It is also strongly rooted in "most pleasing print" criteria. And the appearance of highlights and mid-tones like Caucasian skin heavily influences people's perception of "pleasing" (at least in areas where light skinned people predominate).
Pan-f is a challenging film if you are intending to have it commercially processed, and expect straight prints from it. Less exposure may yield better straight print reproduction of highlights and light tones.
For those who are able to manipulate the highlights and light tones at time of preparing an image for presentation ("printing"), more exposure will indeed result in better shadows, while still presenting the highlights and light tones well.
I like Pan-F at 40 and I run it in DD-X. I suspect most would say I'm being stupid, but it works for me.
From my single 100 ft bulk experience it is good film at any speed as long as you not pushing above 50.
Pan F Plus is a contrasty film. I over-expose a bit, say ISO 32, and develop it is D-23 1+1. You could also use Perceptol.
Do you have two rolls, and can you afford to experiment a bit?I don't develop yet but I am worried about sending it off to get it developed. The Darkroom has been good to me so far and the person says they have experience doing it so we will see.
I want to try out some PanF this weekend if that pesky tropical storm gets out the way.
I've read that Panf should be shot at 25 instead of box speed? Can anyone verify?
Thanks
Do you have two rolls, and can you afford to experiment a bit?
Try shooting one film at "box" speed and another at a lower speed. Try to avoid the really contrasty, wide range subjects that Pan-F isn't particularly suited to. Send both rolls off, and mark on each what Exposure Index you used. If you can, talk to your lab and get their advice - they may recommend and be able to offer a "pull" development on one or both rolls. If they charge extra for that, only you can decide whether the price is worth it to you.
When you get the results back, compare them.
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