B + W 46mm Circular Polarizer Multi Coated Lens Filter

• Polarizer filters evenly increase color saturation of all colors (except black and white), creating deep, rich scenics. • They add contrast for dramatic skies and ariel shots. • Polarizers also eliminate glare from highly reflected surfaces like glass and water. • Polarizers are two part lenses that rotate, allowing you to select the degree of additional saturation, contrast and glare reduction desired. •They come in two varieties. • Circular-for all types of cameras (required for beam splitting metering systems commonly found in auto-focus SLR's and in most current TTL Slr's; check your camera's manual). • Linear-for rangefinders and older SLR metering systems