The Tiffen 4 x 5.65" Grape 1 Solid Colour Filter adds vibrant purple colouration across the entire image and helps cool overly warm tones. The solid colour design makes this filter particularly suitable for pairing with other filters for better control of image appearance. Colour density 1 provides less grape colouration than the density 2 filter.nnThis filter is manufactured using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass and grinding it flat to a tolerance of 1/10,000th of an inch. It measures 4 x 5.65" / 101.6 x 143.5 mm.nnn- The grape colour filter imparts a cool purplish tint to images.n- Solid colour filters apply density evenly across the entire image plane to achieve a soft and creative effect.nnnSpecificationsnn