Every so often I start drooling over the prospect of shooting ULF, but fortunate ly I am in no danger of having enough disposable income in the foreseeable futur e to enable me to purchase a 12x20 and the requisite lens and holders. I was wo ndering if any of you knowledgeable people have ever tried building a 16x20 pinh ole camera? There are lots of pinhole websites, and I found an excellent table a t the Penultimate Pinhole Guide cross referencing film to plane distance, optim um pinhole size and f/no., but none of the sites I visited had any information o n the image circle a given size pinhole would produce at a given distance. This seems like a cheap way to try ULF using 16x20 paper and a box. Does anyone out there know of a table for pinhole image circles or can give the specs for a 16x2 0 pinhole camera? Thank you!
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