Sunpak CP 77mm Circular Polarizer Filter

The filter I received is the same Brand Sunpack that the Camera Stores in my area carry and want $60.00 for the same Filter. I put the polarizer on Lens and focused and turned the filter worked fairly well focus was Sharp color saturation Good. I have hoya and other multi coated CL filters this one works well for $13.99. The ring could be smoother but remember this is a Chinese Filter not Japan, or Philippines, which Cost more than $13.99. I have read people with Focus issues I did not experience this problem. The Filter is a Good Value for the price and Performance.If you have a $1,500 Lens why are you looking to buying a $13.99 Filter

At first I think it's a good deal when I got it from BestBuy. It turns out to be a disaster!!I took this cpl in my trip to wild poppy flower field in Antelope and it destroyed the color in the red poppies (the colors are faded out and not balanced when I turn the ring). Last weekend I used it for Horseshoe bend and my friend face is totally distorted when I put him near to the corner. I won't use this cpl anymore.Not recommend to anybody.

Your photos WILL turn out fuzzy and out of focus, just like other reviewers wrote. I posted a comparison photo to show the differences in detail. Please view it for yourself first before making the decision to purchase. The longer the zoom, the more apparent the focusing issue becomes. Even using a 10-22mm wide angle, the loss in detail is evident.UPDATE==================I tossed the cheap Sunpak filter and recently purchased a B+W MRC Circular Polarizing Filter. It wasn't cheap, however, the difference is night and day in terms of quality and craftsmanship. The same tests yielded perfectly crisp shots. In retrospect, you'll definitely get what you pay for.

I bought this today as an alternative to more expensive polarizers. I figured, yeah, it's not going to perform as well, but it should be good enough. I was wrong.The problems start before you even put this on your lens. That is, if you can get it on your lens. The threading sucks, and even at its tightest, mine never screws on flush with the lens barrel and always feels loose.The threading on the outside is short, too. I prefer to put my polarizers under my UV filters to protect them, but this one won't hold it. Similarly, I can't even put my Canon lens cap over the polarizer if it's on the outside because the threading is too short to hold the clamps.Now on to performance. What performance? Done.I feel dirty for even letting myself buy such a cheap filter.

Bought this filter for a very small price, with very low expectations. Even in such a case this filter fails to meet expectations. The build quality is abysmal, while I was attaching the filter to my lens the glass just fell off! I put the filter back together, but after a little use it falls right off again.For the effectiveness: it will give you a bad flare if you have a light source in the frame or right out of its border. The polarizing effect is not that bad (given that you have low expectation to start with).IMHO, it is not worth the price paid, however small; you are better off using a UV filter for protection and post processing for the sky color etc..

I got this filter from a retail store. It is absolutely terrible, when i compare this Sunpak with other smaller diameter filters i have (Hoya and Hama), Sunpak is absolutely unable to produce enough polarizing effect.Also, the filter changes its color balance while rotating. I really wonder if they feel a little bit of shame while distributing their product. Absolute return.