Top critical review
Has a complex to remove blue cast
on September 18, 2017
It does what it's supposed to - it cuts three stops of light. The threads, although aluminum, are good, and screw in the easiest from all my filters (B+W, Hoya and Tiffen). It does add a cool cast to images, though, and one that I'm not at all pleased with. It's correctable, but not easily so - it cuts different channels in different amounts, and it can be a PITA to adjust in post, especially for video. It also flares quite a bit, despite being coated.
All in all, I prefer the cast of my B+W filter, which gives a warm tint (also difficult to correct, but much easier to live with).