"Tim Engel" <[EMAIL PROTECTED]> wrote: >Either. Pinhole diameter and distance from the film plane determine >aperture and focal length. So you can use a body cap for a short focal >length. Or you can use a lens cap on extension tubes (not on a lens) >for longer focal lengths.
OK, if I understand what you're saying, regardless of whether you use a lens cap or a body cap, a lens is not used. Why wouldn't a cap with a tiny hole, placed over a lens, work? >A few weeks ago, I did a Yahoo! search for pinhole photography and > was surprised by how many sites popped up. There are sites selling >body and lens caps modified to accept little inserts drilled for different >pinhole diameters. Just switch inserts to change hole diameters. >Some have little spring loaded hole covers that you can open manually to >make an exposure. It was an interesting search. TYhanks. I'll poke around a little. Calumet has body caps laser drilled for pinhole work. --- Shel Belinkoff mailto:[EMAIL PROTECTED] - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
