This Exclusive Tiffen filter. Improves color of skintones; absorbs blue cast often caused by electronic flash or outdoor shade. Adds warmth to pale flesh tones. great for portraiture.This High-Trans Titanium Filter has very high transmissive properties utilizing multicoatings and a Titanium oxide component. These filters are mounted in a light weight metal ring with a matte black anti reflective inner ring and a Titanium finnish outer ring to identify the titanium oxide componenet in the filter. The new coatings for this filter increases hardness and reduces the suceptibility to smearing.