Best Polarizer Money Can Buy at the moment. UV filtering element in this PL filter is able to filter out annoyingly, over exaggerated bluish tone PL filter produces in digital camera. The final result is tastefully emphasized pleasant blue sky while removing lots of unwanted reflections off water and glass surface. Even in the shadows, it does bring refined calming effect to the picture. I love this filter, though if your need is to remove lots of unwanted reflection, I recommend you try an old Linear polarizing filter, which takes more out than Circular polarizer. Circular polarizer was introduced in 1980s when auto focus camera became available. Then current auto focusing system had problems when Linear PL filter was used. Today, auto focus system has become so ... MoreBest Polarizer Money Can Buy at the moment. UV filtering element in this PL filter is able to filter out annoyingly, over exaggerated bluish tone PL filter produces in digital camera. The final result is tastefully emphasized pleasant blue sky while removing lots of unwanted reflections off water and glass surface. Even in the shadows, it does bring refined calming effect to the picture. I love this filter, though if your need is to remove lots of unwanted reflection, I recommend you try an old Linear polarizing filter, which takes more out than Circular polarizer. Circular polarizer was introduced in 1980s when auto focus camera became available. Then current auto focusing system had problems when Linear PL filter was used. Today, auto focus system has become so smart that you can use a traditional PL filter without any problems. The industry wants to sell you Circular PL filter because they can charge you more than Linear PL filter. I have taken 100s of pictures with my old linear PL filters on my digital camera with no problems with greater polarizing effect than Circular PL filter. However, without UV filtering element built-in, discoloration by over emphasized blue becomes obvious with some camera equipment especially when dynamic range compression algorithm is utilized. In this line of pursuit for perfection or more natural looking light, I have found this polarizing filter to be very favorable for my style of photography.

Been using the filter for a while and it's really well built, doesn't scratch and screws into my lens with ease.Came in handy for a recent product lifestyle shoot I did. I was shooting in a dark room and had to simulate natural light with strobes, these didn't have high speed sync so I wasn't able to shoot at a wide aperture even when using the strobes on a low power. Then came the Nd filter and I was able to shoot with nice shallow depth of field.

Firstly, I would say I can only review this product used on a Sony A77 and Fuji X100S (with adapter ring). Other camera sensors may behave differently.The Hoya has just a slight shift to the warm side, typically from WB 6000k to 5500k which is very easy to correct in Lightroom etc. I can use the cameras on auto WB without issue.No discernible colour cast, no rainbows, crosses that appear from variable ND filters, and no additional vignette. The camera's light meter judges the Hoya to be 9 stops, not 10.Very pleased with it after prolonged problems with a Tiffen ND3 10 stop filter. (Un-correctable colour shift etc.)No such issues with the Hoya!