Quote Originally Posted by raven1234
Hey guys, Do anyone use a circular polarizer useful for a AF lens a lot and found it very usful?? I had a linear one on my 50mm MF and it was great... Now my AF lens needed one too... But people are telling my it's not as useful as a linear one on a MF lens.

Thks
;)
Circular polarizers ARE linear polarizers! The circular polarizer adds a 1/4 wave retarder plate to the back. This plate "spirals" the already polarized light so the beam splitter will work properly. Always use a circular polarizer with an AF SLR.