Hello everyone.
This is George Sheils (and rest also).
I finished yesterday building my second 4x5 pinhole camera. I use a already drilled plate with 0,32 made in France and used 75mm as distance length.
http://www.stenocamera.fr/
The relation pinhole size and focal length was given by the guy that builds the plates.
What I would like to know is how do you know that you have the sharpest image and how do you tune your pinhole camera to have a really sharp image as shown.
Thank you! (Almost forgot. Great images!)