NiSi Filter UV SMC L395 37mm

NiSi Filter UV SMC L395 – Ultra-thin 3 mm UV cut under 395NM for reduced UV haze

The NiSi Filter UV SMC L395 blocks UV light below 395NM while protecting the front element of your lens. It uses high-quality Japanese optical glass and double-sided multi-coating to keep transmittance high and reflections low. The filter's ultra-thin aluminum frame measures only 3 mm, making it suitable for use on super wide-angle lenses where vignetting and unwanted reflections are a concern.

What this filter does

This filter cuts UV light under 395NM to reduce UV haze in images. At the same time, it serves as a protective barrier for the lens front element, guarding against dust and physical damage. You can also attach lens caps and other front accessories thanks to the screw thread on the front of the frame.

Key features

• Ultra thin, only 3 mm: minimizes vignetting effect on wide-angle lenses and helps avoid unwanted reflections.
• Multi coating on both sides of the filter: provides improved light transmission and reduced surface reflections.
• High quality optical glass for high transmittance (>98.3%) and a highly smooth surface with low reflection (0.5%).
• Protects the lens from dust and damage to the front element, acting as a first line of defense during use.
• Hard, waterproof and oil repellent coating on outer side: repels liquids and oils to keep the surface cleaner.
• Easy to clean: the outer coating and smooth surface simplify maintenance.

Design and build details

The frame uses high-quality aluminum and its thinness of only 3 mm makes this one of the thinnest filters available. NiSi applied superfine dull polishing and elaborate knurling to the frame to prevent blanching from repeated rotation. The front of the frame features a screw thread so you can install lens caps and other accessories without difficulty.

Materials and coatings

The filter employs high quality Japanese optical glass to ensure high light transmittance. It also features double-sided multi-coating to further reduce reflections and improve image quality. The outer surface receives a hard waterproof and oil repellent coating that makes cleaning easier and helps keep the filter clear in challenging conditions.

Regulatory and safety compliance

All materials used in this filter meet the European Union's ROHS (Restrictions on Hazardous Substances) requirements. The product contains no hazardous substances listed in those standards.

FAQ

Question: Will this filter cause vignetting on wide-angle lenses?

Answer: The NiSi UV SMC L395 has an ultra-thin 3 mm frame that is designed to minimize vignetting. It fits well on super wide-angle lenses to reduce the risk of darkened corners and unwanted reflections.

Question: Can I protect my lens with this filter?

Answer: Yes. The filter protects the front element from dust and physical damage while remaining optically transparent to preserve image quality.

Question: How easy is it to clean the filter surface?

Answer: The outer side features a hard waterproof and oil repellent coating, which repels liquids and oils and makes the surface easier to clean compared to uncoated glass.

Question: Is the frame durable and does it wear with repeated use?

Answer: NiSi applied superfine dull polishing and elaborate knurling to the aluminum frame to prevent blanching from repeated rotation, which helps maintain a durable finish over time.

Question: Can I attach my lens cap or other accessories to this filter?

Answer: Yes. The front of the frame has a screw thread that allows easy installation of lens caps and other front-mounted accessories.