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Old 09-07-2019   #91
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CharlesDAMorgan is offline
Join Date: Apr 2018
Location: Plymouth, UK
Posts: 1,474
Hi Barry - it's 37mm on 4x5, so the chap who made it said it was about a focal length of 11mm in 35mm equivalent. Pinhole size is 0.22 mm and distance is about 30mm to film plane (my accuracy of measurement is likely to be low).
De-gassing progress:

Leica M2, Nikon D700, Bronica RF645, Leica CL, Summicron 40mm, Rolleicord Va, Hasselblad 500 CM Zeiss Planar, Leica 50mm Summicron V3, Hasselblad PME51 metered prism, Zeiss Ikon Super Ikonta 534/16 & Ensign 820 Special - all gone.
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