I'm new to pinhole cameras, I've built a lot (mostly furniture and models before) and teach model making/shop. I also have done a bit with digital photography, mostly for the purposes of documenting my work in the other areas. The following show some (rushed and crappy) images of two cameras I've just finished. They are made of black foamcore and black tape. The thin one has 3.2" focal length 90 degree viewing angle the thicker one has a 5" focal length and about a 53 degree viewing angle. The pinholes are as of yet unmounted, they consist of .002" brass shim stock mounted to black matte board (cut via laser cutter) the holes still have to be poked.