Very high thread/ring quality. UV filter very durable. Polarizer coating not.

First one I got from B&H (77mm for Tokina ATX235Pro & Canon 70-200F/2.8L) had several scratches in the coating (appeared to have been used). They replaced it with a new one, and then I scratched the coating with a very careful cleaning. This is the first time I've ever scratched any lens/filter by cleaning. I use all the right cleaner and tissue and a light pressure. So I've concluded that the coating on these CircPol filters is unusually fragile. I also bought their 77mm UV filter and have had no problems whatsoever. The coating on that has withstood my same cleaning methods ... Still use the polarizer with no noticable effect from the scratches.

Nice filter, but due to the fragility of the coating, I'd head for another Hoya or Canon polarizer first. Pretty expensive ($150 for 77mm circpol)

Customer Service

Didn't try.

Similar Products Used:

Hoya, Vivitar, Canon Polarizers.

Optically and mechanically very high quality

Not cheap

These are the best filters I have ever seen. I am using the normal an the Slim line Käsemann and they are excellent. I never had any problems with scratches or so like some of the other reviewers.
Not cheap but the best equipment is never cheap.

Customer Service

Not yet needed

Similar Products Used:

Hoya, Tiffen, Hama, Kodak, Rodenstock

I bought a full line up of circ.polar. and uv multicoats to replace hoyas (77,82,86mm) excellent build quality, smooth rotations, quality glass

price. i also touched the surface of the 77mm polarizer while rotating it. i has been almost impossible to remove my fingerprint! the oil only smears and when it looks clean, i see fog when viewed at an angle.

Top of the line performance and build. But, I just can't get over the difficulty in cleaning. It took me 6 hours to remove simple finger oil, and even then they are not spotless. It makes me hesitant and overly paranoid about touching the surface accidents again. But, the optical performance is perfectly matched to Sigma EX lenses.

Customer Service

ok. i deal with germany so automatically the customer service expectation should be lowered. they admitted that the multicoats are "very difficult" to clean and suggested that the filters be sent to them for cleaning?!

Similar Products Used:

hoya multicoats, sigma uv multis

doesn't stick

used it in winter, turned all the snow blue.
vignettes under 35mm
glass falls out
heavy

I bought the 72 mm circular. By the time I got home the glass had come loose and didn't turn with the frame. I took it back and got another one. I took it out one day to the country and used it on most of two films, it turned everything blue, snow was almost as blue as the sky. i have not had this problem with any of my three Hoya polarizers. vignettes under 35mm which makes it useless with almost any normal zoom. after two days the glass fell out. i was gentle with it and this has not happened with any of my other filters.

worthless, really.

Customer Service

not in russia

Similar Products Used:

hoya