NiSi 77mm True Color Pro Nano CPL Circular Polarizing Filter (Brass Frame)

The NiSi True Color Pro Nano CPL Circular Polarizing Filter (Brass Frame) is a premium circular polarizing filter engineered for photographers and filmmakers who demand superior reflection control, enhanced color saturation, and accurate color reproduction without compromising image quality.

Designed to eliminate unwanted reflections and glare from non-metallic surfaces, the filter effectively reduces reflections from water, glass, foliage, painted surfaces, and other reflective materials, helping create cleaner and more visually compelling images.

By controlling scattered light, the filter produces richer color and tonal saturation, deepening blue skies, enhancing greens in vegetation, and reducing atmospheric haze to deliver more dramatic and impactful landscape, travel, outdoor, and nature photography.

At the heart of the filter is NiSi's advanced True Color polarizing technology, which preserves natural color balance and avoids the warm color cast commonly associated with many traditional CPL filters. This ensures realistic and true-to-life color rendering across a wide variety of shooting conditions.

The filter utilizes premium True Color polarizing material, maintaining accurate hues while providing highly effective polarization performance for improved contrast and visual clarity.

Constructed with an ultra-thin precision-milled brass frame, the filter offers exceptional durability, smooth threading, and resistance to binding, making installation and removal effortless even after extended use.

A durable black finish helps minimize internal reflections, while the slim profile reduces the risk of vignetting when used on wide-angle lenses.

Deep knurled grip surfaces around the frame provide secure handling for easy installation, removal, and adjustment in both studio and outdoor environments.

A unique removable adjustment knob allows photographers to quickly and precisely adjust the polarization effect. Once the desired setting is achieved, the knob can be removed to maintain a low-profile configuration.

The optical system is built with high-resolution optical glass, delivering outstanding sharpness, detail, and resolution capable of meeting the demands of modern high-megapixel cameras and professional imaging workflows.

NiSi's advanced Pro Nano multi-coating is applied to both sides of the filter, reducing flare, ghosting, and unwanted reflections while improving light transmission and overall image quality.

The nano-coating also provides water-resistant and oil-resistant protection, helping repel moisture, fingerprints, dust, and smudges for easier cleaning and maintenance in challenging shooting conditions.

Available in a wide range of filter thread sizes from 40.5mm to 105mm, the filter can accommodate virtually every lens in a professional or enthusiast camera kit.

Precision-engineered, optically refined, and built for demanding creative work, the NiSi True Color Pro Nano CPL Circular Polarizing Filter (Brass Frame) is an outstanding choice for photographers seeking accurate color reproduction, enhanced contrast, superior glare reduction, and premium optical performance across landscape, travel, architecture, automotive, and outdoor photography applications.

Product Features in Detail

NiSi True Color Pro Nano CPL Circular Polarizing Filter (Brass Frame)
The NiSi True Color Pro Nano CPL (Brass Frame) is a professional circular polarising filter built around NiSi’s True Color polarising material and a precision-milled brass frame finished in matte black. It eliminates non-metallic reflections, deepens skies, and lifts saturation in foliage and water, all while preserving the natural colour balance of your scene, so images need less correction in post and stay true to what your eye saw on location.

Built for True Colour
Many circular polarisers introduce a warm or yellow cast that shifts skin tones and skies. The True Color Pro Nano CPL uses NiSi’s True Color polarising material to deliver neutral, accurate colour rendition, making it ideal for landscape, travel, portrait, and product photographers who rely on faithful colour straight out of camera.

Cuts Reflections, Not Quality
Rotate the filter to tame glare from water, foliage, glass, painted surfaces, and wet rocks. Skies deepen, clouds gain contrast, and through-the-surface detail returns to lakes, rivers, and shop windows, all without sacrificing sharpness or introducing colour shift.

Precision-Milled Brass Frame
The ultra-thin brass frame is precision-milled and finished in a clean matte black. Brass threads more smoothly than aluminium and is far less prone to binding on lens threads, even after years of use in the field, making installation and removal effortless.

Knurled Grip for Confident Handling
Knurled sides give your fingers something to bite into when the filter is cold, wet, or being used with gloves. Mounting and removing the CPL becomes quick and predictable, even in awkward shooting positions.

Removable Adjustment Knob
A small, knurled adjustment knob threads into the rotating ring to give you fast, fingertip control over polarisation angle. When you prefer a streamlined profile, or need to stack additional filters, the knob unscrews and stows away in seconds.

Pro Nano Double-Sided Coating
Both surfaces of the optical glass are treated with NiSi’s Pro Nano multi-layer anti-reflection coating. The coating suppresses flare and ghosting, repels water and oil, and resists fingerprints and dust, so the filter stays cleaner for longer and wipes down easily.

Optical Glass for High-Megapixel Sensors
Built with high-quality optical glass to preserve fine detail, the True Color Pro Nano CPL is engineered to keep up with today’s highest-resolution full-frame and medium-format sensors without introducing softness or chromatic aberration.

A Size for Every Lens
Offered in thread sizes from 40.5mm through 105mm, the True Color Pro Nano CPL (Brass Frame) fits virtually every modern still and cine lens, from compact primes to large-diameter telephoto and wide-angle zooms.