No I dont think one exists. There is a group of film based Photographers who meet every three or four months to discuss and show work. its organised through APUG but most are familar faces here. One of the group does a lot of quality pinhole and Zone plate work. Here is a link to Georges images http://www.flickr.com/photos/seoirseosial/sets/ I have done some pinhole work and hope to do some more in the future, in colour mainly.