Is it possible to do unguided with film?
I have ordered a Tak Sky 90 and p2z. That was my budget, since then I've gone over by ordered the field flattener and camera bibs and bobs.
Now, using a Mamiya 645 on a Sky 90 @ f/4.5 with a p2z @ a periodic error of 8 (+- 4). If I do a drift alignment etc.
How long can I expose the film for unguided given that a 400mm focal length and a period error of 8? Will it be long enough to get an image?
Daniel.
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