Calumet 62mm Circular Polarising Digital SMC Filter Calumet's Multi-Coated filters are a must for modern digital stills & camcorder lenses, particularly where lens hoods or compendium shades cannot be used. These outstanding filters offer revolutionary performance in light transmission, colour balance & flare control. Calumet Multi-Coated Filters minimise flare & ghost imaging in situations where unwanted light falls on the filters surface. The result is an average light transmission of over 97%, producing sharp contrast & well-balanced colour. Multi-Coated filters are available in a wide range of filter types & are highly recommended for maximising the performance inherent in multi-coated lenses. Circular Polarising: Rotating mount allows the filter to be adjusted to provide colour contrast & enhancement & to reduce reflections in glass, water etc.