Aram proffered:
Lets see:35-70 f-4 has a ring that sticks out past the mount that is about 32mm in diameter100 2.8 has nothing past the mount. 35 2.8 Has a substantial lip. Hard to measure but about 32mm in diameter24 2.8 has two rings, one that sticks up about 1mm from mount and is fixed (does not move when focused) of about 35mm diameter, and one that moves when focusing of about 26mm in diameter180 f-4 is no problem. 90 2.8 is no problem. And as you said, the 50 2.0 has that lip of about 35mm diameter. That's my collection. Didn't realize I have so many lenses.
Thanks Aram! --- David Young, Logan Lake, CANADA Limited Edition Prints at: www.furnfeather.net Personal Web-site at: www.main.furnfeather.net Stock Photography at: http://tinyurl.com/2amll4