Feature 1 Advanced knurling technology, prevent hand slip, convenient to disassembly. 2 High quality aluminum frame designed, frame front with thread, can install lens cover and other accessory at any time. 3 Rotating filter, outer ring can adjust the wavelength arbitrarily, from 530nm to 750nm change. 4 Suitable for infrared photography creation, very practical integrated adjustable infrared filter, can provide you with more operable content of infrared photography creation. 5 For internal and weak shadows, use 680nm, using 750nm indoors and in low light.Condition: 100% Brand NewItem Type: Infrared FilterBrand: FOTGAMaterial: Aluminum Alloy + Optical GlassColor: As Pictures ShownQuantity: 1PCSWavelength: 530nm 590nm 630nm 680nm 720nm 750nmMain Function: Rotating Filter, Outer Ring Can Adjust Wavelength Arbitrarily, Can Adjusted From 530nm To 590nm and Then To 630nm Until Adjusted To 750nmWeight: Approx. 45gFrame Thickness: Approx. 1.6cm/0.63inchOptional Filter Interface Diameter: Approx. 52mm/2.05inch, 55mm/2.17inch Package List1 x Infrared Filter