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View Full Version : A Circular Polarizer Doesn't Doesn't Have to be Round, and Vice Versa



admin
03-22-2009, 06:09 PM
By cutting haze and cutting down on reflections, a polarizer is one of the most useful filters for outdoor photography. But not all polarizers are created equal. Most modern cameras require what is known as a "circular polarizer." And I can hear at least some of you saying to yourself "aren't all polarizers round?" Ah, but in the world of polarizers "circular" doesn't mean "round."....

More... (http://www.earthboundlight.com/phototips/circular-polarizer-linear-quarter-wave-retarder.html)