Top positive review
Over the summer months my lenses pretty much constantly have CP filters attached to them
on 16 September 2015
Over the summer months my lenses pretty much constantly have CP filters attached to them. CP filters reduce some glare and reflection; and help to make the sky look darker - so unless you are in the studio they are a great filter to have on your body - though they do also darken the image slightly so they aren't necessarily the best things to use at night.
I bought the Hoya 67mm Pro CP filter to go on my 35mm F2 IS USM I could have stepped this up to the 82mm filter I generally use on my L lenses but felt that for the price it wasn't worth the hassle. Out of the box the filter was filthy and I had to invest some time cleaning it up; but once that was done and it was attached to the lens the first thing to notice is the smooth twisting movement of the elements. The polarizing effect works as I would expect; and as well as the far more expensive filter i use on my other lenses. In 1080p video mode on my camera the filter didn't cause any moire pattern issues which is sometimes a concern.