Features: •High quality Aviation aluminum •Imported SCHOTT Optical Glass from Gemany •Black Film Frame and the edge of Glass blackened •Ultra Slim •Double anti-reflective coating, only 7mm thickness ultra thin frame •Allows for variable light reduction from between 2-8 stops; protect your lens from dust and scratches •Decrease the depth of field by using wider apertures, which helps separate subjects from their background •Allows the use of slow shutter speeds, with high speed films or digital cameras, to record .
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