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Saya setuju.
I have removed the tube from the camera housing. This gave me the opportunity tu put the pinhole 43mm from the film plane. I have used cardboard again. Since I have only guessed the size of the pinhole (~0.3mm) the f stop was clearly miscalculated. I knew there would be vignetting and the focal distance is not ideal for this hole size - but this is experimenting! :) Next step is to use metal for the plate and to get decent drill set! Looking foreward for the next try! (In the meanwile, these pictures were taken 2nd May, I have reaasembled the original two lens setupl of the POUVA. I plan to put a pinhole between the two lens where the original f/18 metal hole is located. Time will tell which project will succed first!) Fomapan 100 film was used and really overexposed. It seems that it had lower reciprocity then the Fomapan 200.
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