NiSi Filter Protector Pro Nano Huc 39mm

NiSi Filter Protector Pro Nano HUC 39mm – Ultra-thin 3.5mm Frame to Minimize Vignetting

The NiSi Filter Protector Pro Nano HUC 39mm protects the front element of your lens from dust and impact. It uses high-quality optical glass with nano coatings on both sides to maintain light transmission. The aluminum frame measures 3.5mm in thickness, making this an ultra-thin protector that fits well on wide-angle lenses and helps avoid vignetting.

Key benefits and build details

The filter provides front-element protection while allowing most light to pass through. It features a carefully finished frame and surface treatments that support daily use. Also, the specially treated glass and coatings support easy cleaning and reduce surface reflections.

• Ultra thin frame (3,5mm) to minimize vignetting on wide angle lenses.
• High quality optical glass for high transmittance (>99,3%) and a highly smooth surface with only 0,3% reflection.
• Exclusive creative "U" type Nano coating applied on both sides of the glass.
• Hardened waterproof coating to resist moisture and small splashes.
• Protects the lens from dust and damage to the front element.
• Easy to clean thanks to the nano and waterproof coatings.

Durability and handling

NiSi applied superfine dull polishing and elaborate knurling to the frame. As a result, the frame will not blanch due to repeated rotation. These touches improve handling when mounting and removing the protector.

FAQ

Question: Will this protector cause vignetting on my wide-angle lens?

Answer: The NiSi Protector Pro Nano HUC features an ultra-thin 3,5mm aluminum frame specifically to minimize vignetting on wide-angle lenses, so it is designed to fit closely without intruding into the image circle.

Question: How much light does the filter let through, and will it affect exposure?

Answer: The optical glass allows >99,3% light transmission with only 0,3% surface reflection. That means the filter transmits the vast majority of light, preserving exposure while still protecting the front element.

Question: Is the filter easy to keep clean and durable in regular use?

Answer: Yes. The "U" type Nano coating and hardened waterproof coating make the surface easier to clean and resist moisture. In addition, the superfine dull polishing and knurled frame reduce visible wear from repeated rotation, supporting durability in regular handling.