Excerpt: A name i've come to rely on and am never been disappointed. Great for long exposures where you want the water or sky blurred to smokey viscosity. Great for slowing down the shutter to use fast lenses on bright sunny days
Pros: Clear Optics, Consistant, Easy To Use, Firm Mount, Strong Construction
Excerpt: Quality glass and good threads. I have 2, 6 and 9 stop filters. I use this one more than the others. I tried square resin filters because they were cheaper but they scratched. Go for glass. Great for long exposure cityscape shots.
Pros: Clear Optics, Firm Mount, Strong Construction