Negative Positive
Title: Does its job
Review: As soon as I got this filter, I went outside to try it vs. the windshield of my car with a new Nikon D5100 + Tamron 18-270 lens. It was perfectly easy to use, and I had no trouble dialing it from "neutral" (windshield entirely "glared") to full polarization, which eliminated much of the glare and allowed me to see clearly into the car. If I can figure out how to post these photos here, I'll do it. It's my first circular polarizer, so I have nothing to compare it to. But it seems to do its job.
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