On a lark, I sent a Mamiya Press (front) body cap to be laser-drilled with a .24mm (that's point two four millimeters) pinhole, with the intention of using 120 film in a Mamiya 6x7 back.
Question being, will a .24mm pinhole on a Mamiya Press camera with a focal length of --best estimate here-- 70mm have enough coverage to utilize all of a 6cm x 7cm negative? I've so far been unable to gather the info from internet searches.
To repeat, it was on a lark --no research (stupidly?), little forethought-- and it's only now that I am wondering, have I simply created something useless and wasted money?
Thanks for ANY help...