jjstafford said:I have no jam-hut (retaining ring) for the lens so I had to use a front flange mount. I even tried using the flange as a jam-nut, but it's just too big. I'd like to find the correct retainer. ...
If you have a good measurement, or the Rodenstock specification, I can see if I have one. I've just got hold of a HEAP of flanges and retaining rings


