Quote Originally Posted by David A. Goldfarb View Post
You can probably find them for less at www.mpex.com. They pretty reliably have Ilex 3 and 5 flanges.
They have a #5 but could not find a #3, I would much prefer a retaining ring vs a flange if anyone has one of those. I know they were made at some point as I just sold an lens with an Acme shutter that had a ring not a flange.