I recently ordered a lens mounting flange from a vendor and had to return it due to being the wrong size for my lens, so am posting this to help others avoid the expensive ship it three times syndrome. Comments very welcome.

1. Find a vendor that supplies lens mounting flanges for view camera lenses.

2. CALL THE VENDOR on the phone to discuss the proper flange for your lens.

3. Do not use tables, websites or advice from anyone on a forum.

4. Shutters that are the same but have different lenses mounted to them do not always share the same thread sizes and may require different flanges due to various thread adapters that may be present.

5. Example is my 9 1/2 inch Goerz Gold Dot Dagor on Ilex Acme #3 shutter that uses a "Goerz 2 1/8-25 tpi flange" and neither standard flanges listed in tables for "Ilex Acme #3" or "Ilex Acme #3 - Kodak Type", whatever that means. Is that for a Kodak lens?

Alan Townsend