Quote Originally Posted by StoneNYC View Post
E. Von, it's about none of that, it's about it being a true telephoto, (takes less then 350mm bellows draw) because my bellows only goes to 325mm... So the 350 f/11 will work for me.
Look here: https://www.schneideroptics.com/ecom...D=165&IID=7059, click on mechanical drawing.

Data trumps marketing propaganda. It needs the tube accessory to be usable closer than infinity on your camera.