Formatt-Hitech 82mm Firecrest Superslim Stackable UV IR Cut 82mm Fire crest UV+IR Multicoated filter in the stackable 5.5mm Super Slim ring. Reduces both ultraviolet and infrared to eliminate the contamination that causes image degradation. Fire crest multicasting is anti-reflective and hydrophobic for shooting in challenging conditions Made in the UK on the most advanced computer-controlled manufacturing equipment in the industry.