<p>I have the single-coated version of the 165mm f8 Super Angulon which has a 105mm thread. The Schneider Centre Filter V is apparently for the 165 f8 but has 110mm thread (which the multi-coated version has). Can't seem to find any centre filters with a 105mm thread. I was under the impression that the IVa was the right one but that's 95mm thread. Any ideas?<br> Thanks, Steve</p>