Originally posted by Socrateeze For example, Lee *claims* that with their 82mm wide angle adapter most people use their 100 system down to 16mm, and they implicitly claim that it will be without vignetting unless you are using more than two slots or adding their CPL on the front.
Yes, I've tried and I got vignetting. I had to butcher the filter holder to reduce vignetting on my Tamron 24-70 that has a 82mm filter thread and vignette at 24mm without CPL and vignette even more with a CPL on. In fact, whether there is vignetting or not doesn't depend much of the filter thread dimension, it also depends on the position of the filter thread relative to the front element of the lens and also it depends on the optical construction. Filter thread is no guarantee that you can use a 100mm filter on a wide angle lens without vignetting. Before you claim Sony 16-35 doesn't vignette with a 100mm on FF, you have to test it. I'm starting to have some experience with filter, I am at my 4th filter system...
Last edited by biz-engineer; 08-19-2019 at 03:24 AM.