Quote Originally Posted by Dan Fromm View Post
Ian, have your vision checked.

I just took a look at some of my shutters. Rimset Compur (Compur-Rapid #0, Synchro Compur #0 and #1), uneven spacing. Prontor Press #0, even spacing, #1, uneven. Copal Press #0 and #1, even, Copal cock-and-shoot #0 and #1, even. Epsilon (not sure where it fits in the Compur/Copal scheme, it holds a 105/3.8 Xpres), uneven.

With uneven spacing, the smaller the aperture, the shorter the steps.
Yes you're right my mistake - on the small shutter on the 65mm SA which I dhad in front of me the spacings appear to be almost even but they aren't quite.