Excerpt: I use these filters on every lens always! They provide protection from all the little annoyances that can ruin a good lens system. Well worth the money and peace of mind. Never Dissapointed with Hoya! Don't have anything Bad to say!
Pros: Clear Optics, Easy To Use, Firm Mount, Strong Construction
Excerpt: We purchased this filter in 2010 for use with our Sigma 150-500mm lens we purchased on the same date. Sadly, we did not get to use the lens very much until September of 2011. The first day out I got some great shots of great blue heron but when I looked at them on my computer all of the shots were very, very soft. So I did what I should have done before buying the lens, I read the reviews. I tried what the reviewers reccomended.