----- Original Message ----- From: "Beaker" <mbea...@mac.com>
> I'm thinking of getting a sheet of Zone Plates made for a Pentax K > mount body cap (optimized for 43 mm). Would anyone be interested in > buying any? The reason I ask, the negative will cost something like $50 > to $75, (the shop has a $50 minimum.) and I would like to spread the > cost out a little. For a little more to cover the cost of a body cap, I > could send out the finished article. The negative isn't made yet- I'm > just trying to gauge the interest, so the price is still "to be > determined". A sheet made by an image setter can fit lots of ZPs, you don't have to have the whole sheet full of 43mm ZPs, I would suggest you make some other focal lengths as well. 65mm for instance is perfect for attaching it to the back of the shutter of a Lubitel. Another possibility, which is not mutually exclusive with the one previously mentioned, is to make similar focal lengths ZPs but with different number of rings, which will give you different f/stops, I.E., a 43mm ZP with 9 total rings is f/64 (aprox) but a 19 rings one is f/45 and would probably have more of that ghostly effect. I make my own ZPs using lith film, otherwise I'd be joining you, nevertheless I recognize this as a good chance for those that have not experimented zoneplate photography to try it with very minimum investment and help you share the cost in the process, a win/win scenario if you ask me. Good luck. Guillermo
