NiSi Filter Protector Pro Nano Huc 55mm

NiSi Filter Protector Pro Nano Huc 55mm – Ultra-thin 3.5mm Frame to Minimise Vignetting

The NiSi Filter Protector Pro Nano Huc 55mm protects the front element of your lens from dust and impact while preserving image quality. It uses high quality optical glass with nano coatings on both sides to allow high light transmission. The ultra-thin aluminum frame helps the filter fit on wide-angle lenses with minimal risk of vignetting.

Key features and benefits

The filter combines a thin, precisely machined frame with treated optical glass. As a result, it protects the lens front element and remains easy to handle and maintain during repeated use.

• Ultra thin frame (3.5mm) — the frame thickness is only 3.5mm. This thin profile helps minimise vignetting when used on wide-angle lenses.
• High quality optical glass — the glass provides high transmittance, stated at >99.3%, and a highly smooth surface with only 0.3% reflection, which supports clear image capture.
• Exclusive creative "U" type Nano coating — the filter features NiSi’s U-type nano coating to reduce surface reflections and preserve light transmission.
• Hardened waterproof coating — the treated surface adds water resistance, helping to protect the glass from moisture and simplifying cleaning.
• Protects the lens front element — the protector guards against dust and impact that could damage the front element of the lens.
• Easy to clean — the nano coatings and smooth glass surface make maintenance straightforward.

Design and handling

NiSi applied superfine dull polishing and elaborate knurling to the frame. This treatment ensures the frame will not blanch from repeated rotation. In practice, the combination of careful polishing and knurling gives reliable grip and consistent rotation without surface wear that would affect appearance or handling.

Use cases

Use this protector whenever you need to shield the front element from dust and minor impact without compromising light transmission. The thin frame makes it particularly suitable for wide-angle photography where reducing vignetting is important.

Smart FAQ

Question: Will this filter cause vignetting on wide-angle lenses?
Answer: The filter uses an ultra-thin 3.5mm frame designed to minimise vignetting on wide-angle lenses, so it is suitable for applications where edge-to-edge coverage matters.

Question: How much light does the protector let through and does it affect image quality?
Answer: The high quality optical glass provides very high light transmittance (>99.3%) with only 0.3% reflection. These values indicate the protector is engineered to preserve image brightness and minimise unwanted reflections.

Question: Is the filter easy to keep clean and durable in the field?
Answer: Yes. The U-type nano coatings on both sides and the hardened waterproof coating make the glass easier to clean. Additionally, superfine dull polishing and elaborate knurling help prevent the frame from blanching during repeated rotation, supporting long-term handling.

Question: What protection does the filter provide for my lens?
Answer: The protector shields the lens front element from dust and minor impacts while maintaining high transmittance, so you can safeguard the glass without compromising optical performance.