。Use lapping optical glass to provide the best quality of footage. 。Exclusive unique coating to decrease the reflection and diffusion. 。Cut the infrared and ultraviolet perfectly, give you more vivid and sharper footage. 。Exclusive multi-coatings on both side offer crystal clarity. 。Curve polishing on the edge offer smooth and exquisite quality. 。Filter thickness of only 2mm, it can be used for matte box and Cokin Z-series filter holder. We provide three type, Full ND, Vertical Gradient ND, Horizontal Gradient ND,and four different levels filter, ND0.3, ND0.6, ND0.9, ND1.2, and all come with a carry bag that can protect glass filter well. Skier Hot Mirror filters are the perfect solution for IR pollution with no appreciable reduction in visible light transmission. They are made of lapping optical glass. *While you use the filter, the surface with engraving should face away from the camera. Light Souce : 300W Tungsten, with Filter CCT：2993 K CRI(Ra)：99 Re(R1~R15)：98 CQS：97 Illuminance：331 lux Foot Candle：30.8 fc CIE1931 x：0.4404 CIE1931 y：0.4104 CIE1976 u'：0.2501 CIE1976 v'：0.5243 λp：676 nm λD：582 nm Purity(Pe)：55 % Duv：0.0020 SP Ratio：1.5 PPFD(380-780nm)：6.89 μmol/㎡/s TLCI(Qa)：99.7 GAI：53.3
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