I am very curious about shutter design, as I am biased towards mechanical shutters. I have been avoiding electronics as I believe that mechanical shutters give better synchronicity with subjects.
Focal Plane Shutters
There are leaf shutters at the focal plane, which is why I call fixed RF and LF shutters "iris" leaf shutters. My FM has a leaf shutter which is metal, and my Nikon N65 has a very flimsy plastic leaf shutter.
When I get a little more knowledge I am going to expand this.--John Bessa 16:20, 31 May 2008 (EDT)