NiSi Filter UV SMC L395 55mm

NiSi Filter UV SMC L395 55mm – Ultra-thin 3 mm UV protection for wide-angle lenses

The NiSi Filter UV SMC L395 55mm cuts UV light below 395 nm while offering an ultra-thin frame of only 3 mm. It uses high-quality Japanese optical glass and multi-coating on both sides to maintain high transmittance and low reflection. Additionally, the thin aluminum frame fits even on super wide-angle lenses to minimize vignetting and reduce unwanted reflections.

Key features at a glance

• Ultra thin, only 3 mm: Minimizes vignetting effect on wide-angle lenses and helps maintain the full field of view.
• Multi coating on both sides of the filter: Reduces reflections and improves image clarity under many shooting conditions.
• High quality optical glass for high transmittance (>98,3%) and highly smooth surface with low reflection (0,5%): Delivers clear, accurate results while limiting stray light.
• Protects the lens from dust and damage to the front element: Serves as a first line of defense during outdoor or studio work.
• Hard waterproof and oil repellent coating on outer side: Makes the surface easier to clean and helps repel contaminants.
• Easy to clean: Coatings and glass construction simplify maintenance between shoots.

Design and build quality

The filter frame uses high-quality aluminum and measures only 3 mm in thinness. Interestingly, the manufacturer describes this as the thinnest frame in the world so far, which allows the filter to sit close to the lens without introducing vignetting on wide-angle optics. Furthermore, superfine dull polishing and elaborate knurling reduce visible wear: repeated rotation will not blanch the frame surface.

For convenience, the frame includes a front screw thread so you can attach a lens cap or other accessories directly to the filter.

Optical performance

The NiSi UV SMC L395 removes ultraviolet light below 395 nm to help prevent bluish haze in distant landscapes and to preserve color fidelity. The optical glass used is from Japan, and the filter features multi-coating on both sides for improved transmission. According to the product information, transmittance exceeds 98,3% and surface reflection is as low as 0,5%, which together support clean, contrast-rich images with minimal flare from the filter surface.

Compatibility and practical use

This 55mm filter size fits lenses with a 55mm filter thread. Because of its ultra-thin 3 mm frame, it is especially suitable for super wide-angle lenses where traditional thicker filters can cause vignetting. At the same time, it protects the front element from dust and incidental damage, while the front thread allows you to keep using lens caps or stack accessories.

FAQ

Question: Will this filter cause vignetting on wide-angle lenses?
Answer: Because the NiSi UV SMC L395 has an ultra-thin 3 mm frame, it is designed to minimize vignetting and fits well on super wide-angle lenses, thereby reducing the risk of darkened corners or frame-induced reflections.

Question: What does the L395 designation mean for image capture?
Answer: L395 indicates the filter cuts ultraviolet light below 395 nm. This helps reduce UV-induced haze and preserves color accuracy, particularly in landscape and outdoor photography.

Question: How easy is it to keep the filter clean during shoots?
Answer: The outer surface has a hard waterproof and oil repellent coating, which makes the filter easier to clean and helps repel fingerprints, water drops, and smudges between cleanings.

Question: Can I still attach a lens cap or other accessories when the filter is mounted?
Answer: Yes. The frame includes a front screw thread that allows you to mount a lens cap or additional threaded accessories directly to the filter.

Question: Is this filter environmentally compliant?
Answer: Yes. All materials used in this filter meet the European Union's RoHS standards and contain no hazardous substances, according to the product information provided.