If you check out Calumet: www.calumetphoto.com
and do a search on "pentax pinhole" you'll see that have 3 models of pinhole body caps (50mm, 75mm, 150mm) including ones that fit the 645 and 67. The 75 and 150 are pretty expensive, but the 50 is $30. tv -- Thomas Van Veen Photography www.thomasvanveen.com 301-758-3085
