Negative Positive
Title: Says Circular Polarizer, but is not
Review: This appears to be just a ND filter in a polarizer ring. I have tried several "tests" (Viewing LCD screen and turning, looking through polarized sunglasses and turning, looking to the sky 90 degrees from the sun and turning. Nothing changes. A cheapo CPL for a smaller lens darkens and changes the polarization. I though tiffen was supposed to be a top notch company, but guess not.
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