Photography Accessories INC

I purchased two helicoid adapters from this seller, and both have the same issue: when mounted on a lens, the aperture ring is forced downward and can’t be seen freely. It feels like the helicoid was poorly machined or misaligned, causing mechanical interference with the lens. I’ve tested them with multiple lenses, and the problem persists across all of them. Very disappointing, especially since this isn’t a cheap part. Not recommended unless this design flaw is corrected.