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Item Type: Infrared Filter, Brand: FOTGA Material: Aluminum Alloy + Optical Glass; Quantity: 1 piece; Wavelength: 530nm590nm630nm680nm720nm750nm; Main functions: Rotating filter outer ring can be adjusted to 630nm to 590nm, Weight approx. 4 5g frame thickness approx. 1.6cm/0.63" Optional Filter Interface Diameter 52mm/2.05" 55mm/2.17" Package List 1x IR Filter