Excerpt: I got this filter as a part of the HMC Filter Kit with the Multi Coated UV filter and the Tiffen Filter wallet.I love the effect of glare reduction as I shoot a lot of cars and sunrises/sets.The only problems I found were slight vignetting when used with the UV filter (Nikkor 13-105mm) and that it only rotates CCW to adjust the effect (which isn't bad once you get used to it).
Pros: Consistent Effect, Easily Mounted, Multi coated, Strong Construction
Excerpt: I like the performance overall. However, I would like to have a small tab or protrusion on the filter so it could be more easily rotated when using a hood, and to know when one position is 90º, or some angle, to another.
Pros: Clear Optics, Firm Mount, Strong Construction