Another question for Martin.
I was always impressed by your 5x4 pinhole pics on the internet but seeing them in reality printed up has really given me the impetus to get those two cameras out that I built recently.
Peter has managed to source a handful of filmholders for me (thanks Peter) which I will have in a few weeks so all I need to do is get the film from Gunn's.
Now, my question. The first camera I intend to use has a focal length of 45mm on 5x4. The pinhole is 0.3mm in diameter so by simple calculation my fstop should be f150. Do you know of a conversion chart that would help me to calculate the correct exposure when I take my light readings (I'll be using a Sekonic meter) and how they transfer across for f150?
Eddie was saying that Fuji Acros is unaffected by reciprocity so I will likely go for that or do you think that Ilford or Foma is better?
I'd appreciate any advice you might have for me Martin.
Last edited by seoirse; 11-16-2010 at 04:01 AM. Click to view previous post history.
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