« on: February 13, 2012, 12:48:54 AM »
As mentioned everyone has their personal opinion on these filters and brands. I've learned recently that even a high quality filter can present issues. Recently I had thought to get the Light Craft Fader that claimed to offer 2-10 stops as a variable ND (their newest HD series). In my opinion this was a gross exaggeration. I posted a few test shows in the lens forum for the 16-35 mkii lens in comparison to a Hoya ND400 9 stop filter on a 72mm lens since Hoya doesn't make this filter for an 82mm. The Fader couldn't touch the uniformity nor the 9 stop range of the Hoya ND400 so the fader went back. I replaced it with a B&W 82mm 10 stopper and a Hoya HD Pro ND64 (6 stopper). As the author above me writes..dont' go cheap. They are correct.do your research. I do stick with specific Hoya & Marumi's and B&W..I've never had an issue. To further illustrate check out this UV filter review..note the winner and how Tiffen's were dead last in degrading the final image and note how a specific "cheaper" Hoya beat out a more expensive Hoya in the results (note I didn't say "cheap" I said "cheaper" http://www.lenstip.com/113.1-article-UV_filters_test.html note line #4 for the summary.