High-quality 52mm Basic Circular Polarizer MRC Filter by B+W for enhanced photography Rotating mounts for visible control of polarization effect in viewfinder or monitor display Reduces reflections from non-metallic surfaces like water, glass, and glossy paint Compatible with nearly all modern cameras with TTL exposure metering or autofocus Multiplying factor of 2 to 3, outperforming other polarizers with only up to 3 stops Ideal for landscape photography, with maximum effect at 90-degree angle to the sun