Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Canon T3, works just as expected!

Reduces reflections magically and really does sharpen colors. I definitely recommend this. The only problem is that, if you normally like to manually focus, you have to switch the lens to automatic focus before adjusting the polarizer or else you'll lose your focus! Turning the polarizer will also turn the focus unless it's in the automatic function.*it is very hard to take off your lens though. and you cannot tighten it loosely or else it'll unscrew as you turn the polarizer so you kind of have to tighten it onto your lens all the way