Forum: Pentax DSLR Discussion
12-13-2007, 10:44 AM
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yes, Circular Polarizers are expensive. Much more expensive than the linears. I don't know what situations will result in erroneous exposure and/or focus when you use the linear, and I don't want to find out. I use circulars. The problem is interference with the half silvered center of the mirror that splits light between the viewfinder prism and the focus and exposure sensors in the mirror box.
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