ToCAD Sunpak CF-7063-CP 77mm Circular Polarizer 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...

For the price it is a decent filter. There seems to be a tad of resolution loss but for the times I need a polarizer (i.e. to bring out some lush colors) it does that well. I've used it on a wide angle as well as telephoto and it worked well on both.

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...

After trying out this polarizer today I absolutely could not believe what I was experiencing at long telephoto lengths. The pictures were extremely fuzzy! At first I thought I needed to get my $1400 Canon "L" lens repaired, but then it became...

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...