Comments about Adorama Adorama 67mm Circular Polarizer Glass Filter:

I bought this to use on my Tamron 28-75mm lens. I must admit I had a hard time getting it to firmly attach to the lens at first, but this is my first "rotating" filter as well. Once installed correctly its stayed on the lens for 2 months now. I shot approximately 1800 pictures in Stockholm, Sweden with it as well as on a mini vacation back here in the US. It did fabulous, the colors were deeper and richer and in Stockholm (being a town on water) I noticed the biggest plus was it got rid of the glare on the water, not entirely but a lot more than if I did not have the filter attached.
I highly recommend buying it, I can see a difference in my landscape shots with it.
One problem is that you got to keep rotating the filter as you zoom or change angles, after a few shots that becomes automatic though, I don't even think about it anymore.
The only problem I really found was installing it, being a rotating filter it has 2 discs I suppose and I kept rotating the outer one which obviously wouldn't do anything, once I figured out the problem its stayed on nice and tight and have had no issues at all with it.