> >> > >> > >>http://www.matoe.org/gallery2/v/tomatoe/pinhole/IMGP0119K10D > .jpg.html > >> > >>>Pinhole photography with a K10D. I drilled a hole into a Pentax > > earlier today I made a hole in a body cap and took some > pictures. The > > first in each pair is the scene through a lens. The 2nd is the scene > > through the pinhole: > > > > http://www.web-options.com/Pinhole/ > > > > Interestingly the pinhole seems to have a focal length of > about 50mm. > > The f-stop, according to my calculation, is about 128, based on the > > difference in exposure times at ISO 100. > > Making pinholes directly in the bodycap? Better to make a > bigger hole > and cover it with some thin metal with the actual pinhole in. The > smoother you make the hole, the fewer artefacts.
I also tried it by removing the body cap and wrapping the camera in foil. It didn't make much difference. Guess I'm not much good at hole-smoothing. Bob -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
