NiSi Filter UV SMC L395 43mm

NiSi Filter UV SMC L395 43mm – Ultra-thin 3 mm UV cut filter that blocks wavelengths below 395 nm

The NiSi Filter UV SMC L395 is a 43mm UV-cut filter that blocks ultraviolet light below 395 nm. It uses high quality Japanese optical glass and double-sided multi-coating to deliver high transmittance and low reflection. Because the frame is ultra-thin—only 3 mm—the filter fits well on wide-angle and super wide-angle lenses to minimize vignetting and unwanted reflections.

Key features and benefits

• UV cut: The filter cuts UV light under 395 nm, helping to reduce UV haze in images where UV can affect clarity.
• Ultra-thin frame (3 mm): The 3 mm aluminum frame minimizes vignetting on wide-angle lenses and is designed to fit even on super wide-angle optics.
• Double-sided multi-coating: Coatings on both sides help to reduce reflections and enhance light transmission through the glass.
• High quality Japanese optical glass: The glass provides high transmittance and a smooth surface for consistent image quality.
• High transmittance and low reflection: The filter offers very high transmittance (>98.3%) and low surface reflection (0.5%), maintaining image brightness and contrast.
• Durable frame finishing: Superfine dull polishing and elaborate knurling reduce the risk of the frame blanching from repeated mounting and rotation.
• Front screw thread: A threaded front allows easy attachment of a lens cap and other accessories.
• Lens protection: The filter protects the front element from dust and damage while remaining easy to clean.
• Outer-side coating: A hard waterproof and oil-repellent coating on the outer side helps repel contaminants and simplify cleaning.
• Environmental compliance: All materials meet the European Union’s ROHS requirements, containing no hazardous substances listed under that standard.

Use cases

Use this filter when you want to reduce UV-induced haze, protect the front element of your lens, or work with wide-angle lenses where vignetting is a concern. Because of the ultra-thin frame and double-sided coatings, it suits photographers and filmmakers who require a compact protective filter that preserves image brightness and minimizes reflections.

Specifications

FAQ

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

Answer: Because the frame is ultra-thin (3 mm), the filter is designed to minimize vignetting and fit on super wide-angle lenses where thicker filters can cause darkening in the corners.

Question: Does the filter actually reduce UV light?

Answer: Yes. The NiSi UV SMC L395 cuts ultraviolet light below 395 nm, which helps reduce UV haze in images taken under conditions where UV light is present.

Question: Is the filter easy to clean and maintain?

Answer: The outer side has a hard waterproof and oil-repellent coating that repels contaminants and makes cleaning easier. Additionally, the double-sided multi-coating helps reduce smudges and reflections.

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

Answer: Yes. The filter has a front screw thread that allows you to install a lens cap and other compatible accessories securely.

Question: Are the materials safe and environmentally compliant?

Answer: All materials used in this filter meet the European Union's ROHS requirements and do not contain the hazardous substances restricted under that standard.