NiSi Filter Pro Nano AIR UV 39mm

NiSi Filter Pro Nano AIR UV 39mm – 99.9% Transmission Clarity

The NiSi Pro Nano AIR UV 39mm filter delivers near-air transparency while protecting your lens. It uses NiSi’s ULRC (Ultra Low Reflective Coating) technology to achieve exceptional light transmission and minimal reflectivity. Photographers can rely on this filter to preserve image quality while shielding their optics from everyday hazards.

High transmission and low reflectivity for clean images

The Air UV Filter reaches a peak transmission of 99.9%, with an average transmission of 99.6% between 420–680nm. In practice, this means the filter passes nearly all visible light and introduces very little loss in contrast or brightness. Reflectivity measures as low as 0.1%, which helps reduce flare and unwanted reflections in demanding shooting situations.

Designed for high-resolution systems

This filter supports cameras and lenses that exceed 100 megapixels. In other words, you can use the NiSi Air UV Filter with high-resolution setups without sacrificing detail or sharpness. It suits landscape, portrait, and commercial photography where resolving power matters.

Advanced ULRC nano-coating for durability

NiSi applies a 48-layer ULRC nano-coating to the glass to improve durability and handling. The coating provides multiple protective properties that help the filter withstand frequent outdoor use and cleaning.

• Scratch resistance
• Stain resistance
• Waterproof and oil-proof properties

These features make the filter easier to maintain and more reliable in harsh environments, from wet conditions to dusty locations.

Optical performance and UV control

The filter blocks UV light below 395nm, which reduces blue haze and UV-induced interference. As a result, the Air UV Filter helps maintain accurate color rendering and image clarity when shooting in bright daylight or at high elevations where UV is stronger.

NiSi uses carefully selected, premium lens optical glass for the Air UV Filter. Each glass element undergoes strict quality control to ensure consistent optical performance and image integrity.

Precision frame and easy mounting

The Air UV Filter uses an ultra-thin knurling brass frame. Brass provides greater resistance to deformation compared to aluminum, and the knurling makes the filter simple to mount and remove. The slim frame design also helps prevent vignetting, even when used on ultra-wide-angle lenses.

Quality testing and sizes

NiSi tests every Air UV Filter with a Shimadzu spectrophotometer to verify transmission and reflectivity. This inspection process ensures each filter meets NiSi’s performance standards and delivers consistent optical precision.

The NiSi Pro Nano AIR UV series is available in sizes from 37mm to 105mm. This specific product is the 39mm version.

Features

• 99.9% Transmission Clarity - Achieves an incredible 99.9% peak transmission rate with ULRC coating, making it as clear as air. Perfectly compatible with premium lenses for optimal image quality.
• 100-Megapixel Compatibility - Retains exceptional resolution and detail when used with high-performance cameras exceeding 100 megapixels, ensuring no loss of image sharpness.
• Advanced 48-Layer ULRC Coating - Features 48-layer nano-coating for scratch, stain, water, and oil resistance, delivering durability and reliable performance in harsh environments.
• Blocks UV Light Below 395nm - Reduces blue haze and UV-induced interference, ensuring vibrant colors and sharper images even in challenging lighting conditions.
• Premium Optical Glass - Made from high-end lens-grade optical glass, rigorously selected to enhance optical performance and maintain image integrity.
• Ultra-Thin Brass Frame - Durable brass frame with a slim design to prevent vignetting on ultra-wide-angle lenses. Knurling ensures easy installation and removal.
• Exceptional Reflectivity Control - With only 0.1% reflectivity, this filter minimizes glare and reflections, ensuring superior light transmission and cleaner images.
• Precision Tested for Quality - Each filter undergoes strict transmission and reflectivity testing with a Shimadzu spectrophotometer for guaranteed optical precision.
• Lens Protection and Image Enhancement - Protects your lens from dust, scratches, and moisture while maintaining the full imaging potential of your high-quality lenses.
• Perfect for Outdoor Shooting - Designed to withstand tough conditions, making it ideal for landscape, travel, and outdoor photography without compromising image quality.

What's in the box

• NiSi Pro Nano AIR UV Filter
• NiSi Microfiber Cleaning Cloth

Specifications

FAQ

Question: Will this filter fit my lens with a 39mm thread?
Answer: Yes. The NiSi Pro Nano AIR UV 39mm is a 39mm-thread filter and fits lenses with a 39mm filter thread. It is part of the NiSi series that is also available in sizes from 37mm to 105mm for other thread sizes.

Question: How does this filter affect image quality on high-resolution cameras?
Answer: The filter is engineered to support cameras and lenses that exceed 100 megapixels. With 99.9% peak transmission, 99.6% average transmission (420–680nm), and only 0.1% reflectivity, it preserves resolution and sharpness so you don’t lose detail when using high-resolution systems.

Question: Is the filter easy to clean and durable for outdoor use?
Answer: Yes. The 48-layer ULRC nano-coating offers scratch resistance, stain resistance, and waterproof and oil-proof properties. The package also includes a NiSi microfiber cleaning cloth to help keep the filter clean in the field.

Question: Will this filter cause vignetting on wide-angle lenses?
Answer: The filter uses an ultra-thin brass frame specifically designed to reduce the risk of vignetting. The slim profile helps maintain a clear field of view even with ultra-wide-angle lenses.