This gallery is about pinholes... I have tried to make a pinhole camera with a digital camera. The result is not very good, because the focal length is difficult to calculate and you not get good focus. I have used different tables for it (internet have several different tables about focal length in pinholes) with similar results. Now you can see the process and the results in this small gallery.
I recommend you visit the galleries of Colin Clarke about pinholes. He is a master in this matter and this gallery is dedicated to him, great photographer and friend :o)