NiSi Filter Protector Pro Nano Huc 40mm

NiSi Filter Protector Pro Nano Huc 40mm – Ultra-thin 3.5mm frame to minimize vignetting

The NiSi Filter Protector Pro Nano Huc 40mm protects the front element of your lens from dust and impact. It uses high quality optical glass with nano coatings on both sides to keep light transmission high while making the surface easy to clean.

Key benefits

First, the filter offers strong front-element protection against dust and physical damage. Second, its optical construction preserves image quality, since the glass allows a very high percentage of light to pass through. Finally, the ultra-thin aluminum frame helps the filter fit on wide-angle lenses without causing vignetting.

Design and finish

The frame is made from high quality aluminum and measures only 3.5mm in thickness. Because of this slim profile, the filter fits closely to the lens and reduces the risk of vignetting on wide-angle optics.

In addition, the frame receives superfine dull polishing and an elaborate knurling pattern. These treatments prevent the frame from blanching or showing wear from repeated rotation, so the filter remains functional and easy to handle over time.

Optical coatings and cleaning

The NiSi Pro Nano HUC protector uses exclusive "U" type Nano coating. The nano coating is applied on both sides of the glass. As a result, the filter achieves high transmittance and a smooth surface with very low reflection.

Moreover, the filter has a hardened waterproof coating. This treatment makes the front surface easier to clean and helps repel moisture and contaminants.

Features

• Ultra thin frame (3.5mm) to minimize vignetting on wide angle lens
• High quality optical glass for high transmittance (>99,3%) and highly smooth surface with only 0,3% reflection
• Exclusive creative "U" type Nano coating
• Hardened waterproof coating
• Protects the lens from dust and damage to the front element
• Easy to clean

Technical specifications

FAQ

Question: What does this filter protect my lens from?
Answer: The NiSi Filter Protector Pro Nano Huc protects the front element from dust and impact-related damage, helping to keep the lens surface intact.

Question: Will the filter affect image brightness or cause reflections?
Answer: No significant effect is expected—the high quality optical glass provides >99,3% light transmittance and the surface has only 0,3% reflection, which helps maintain image brightness and reduce unwanted reflections.

Question: Is this filter suitable for wide-angle lenses?
Answer: Yes. The ultra-thin 3,5mm aluminum frame is specifically designed to minimize vignetting on wide-angle lenses while still providing front-element protection.

Question: How easy is the filter to clean and maintain?
Answer: The filter features a hardened waterproof coating and nano coatings on both sides, which make the surface easier to clean and help repel moisture and contaminants during normal use.

Question: What finish and handling features does the frame include?
Answer: The frame receives superfine dull polishing and elaborate knurling to prevent blanching from repeated rotation and to ensure a reliable grip when attaching or removing the filter.