Does exactly what it's supposed to do. Overall good quality build. Great for B&W photography. Makes the clouds pop.

I'm a rank amateur with too much camera for my own good but the filter in a gymnasium setting seemed to bring out much sharper colors.

If you ever wondered how people are able to take pictures through a glass tank or display like at a zoo, or take beach/lake landscapes during the day without having the water be a "mirror" for the sun, and the sky being so bright it ruins the image, this is exactly what you need! It works by rotating the ring (this is a MUST and is why the ring rotates) until the reflections are gone or minimized- there is only so much a CPL filter can do in general and this is of course a budget model as it could be in some cases 1/10 the cost of a "professional" filter. I am not a pro but i can say that this filter makes shots which would otherwise; have a blown out sky (too bright) or reflections on glass when im taking pictures through a window or something else, clear and much improved. It also works to bring down light such as bright clouds during the day time etc. so you can more better expose the picture and capture the whole scene and not just a small part of it (if you want to). I am using this on a beginner DSLR D3200 and am pretty satisfied especially at it's price point, i ALWAYS use it in daytime, at night it's only useful in a minority of situations for specific shots and effects. I included an image at a low resolution to be able to upload it however the effect of having the sky and water clear and the whole scene exposed relatively evenly shows the effect of the filter.

I am only a amateur playing with my camera so cant leave any real good or bad points on a filter. I bought it to protect my lens primarily but decided on a polarized one as someone told me it can help block out some glare. always protect your lens with a cover of some sort!

This is a great filter, provided that you do not try to use a hood. If you look at how it is made, the filter has two parts, the lens: the lens and sort of a gripping ring with a knurled edge. The lens is free to rotate without unscrewing itself, which is a good thing. Unfortunately, a hood cannot slide over the mounting ring with the raised edge on it. In order to use this filer with a hood you need to unscrew it from the lens, install the hood, and then reach inside of the hood and attempt to screw in the filter. Seeing how the filter itself is designed to freely rotate, and your fingers cannot possibly grip the rim of the mounting ring, it becomes difficult, but far from impossible to screw in the lens at least partway. It's a great filter, provided you have no intention of using a hood. For the price, you cannot beat it. I just think making a filter with an outer diameter too large for a hood is a major oversight by the designers. Otherwise, I'd give it 5 Stars for performance value.