Product descriptionCircular Polarizers - Increase Color Saturation, Reduce Reflections
Highly efficient standard circular polarizing filter for all cameras with beam splitters in the light paths of their TTL exposure meter and with autofocus lenses.
Circular polarization has the same pictorial effect as linear polarization, but allows for proper exposure metering and/or autofocus distance settings.
MRC - A Special Scratch-Resistant, Water and Dirt Repelling Coating
The lens elements of high-quality lenses and the plano surfaces of filters require a perfect shape and smoothness to achieve the best optical quality.
Dirt, greasy fingerprints, water marks and scratches reduce the image contrast and the sharpness, which can result in blooming at light sources and have an effect similar to a soft-focus lens.
A clean front lens element and clean filter surfaces are therefore an absolute pre-requisite for demanding photographers.
from Consumer Electronics Store http://cestore.net/camera-photo/accessories/filters/polarizing-filters/Circular-Polarizer-Multi-Resistant-Coating-Polarizing.html?pid=B01N7VH7GK
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