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Most of circular ﬁlters are made of brass/aluminium frame, but these kind of materials are heavy and not ideal under cold weather conditions. Because of that, NiSi created a Titanium Alloy Frame Pro Nano UV Cut -395. Itís made of Titanium Alloy Frame with Nano coated optical glass.
- Titanium Alloy Frame Itís light, hard, anti-corrosion, heat-resisting
- Ultra-High Deﬁnition Optical glass
- Matte Black inside the frame
- UV Cut Nano Coating Nano coating cut the UV light below 395nm
- Lens Standard Optical Glass Lens standard optical glass H-K9L