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The knurled edge of the NiSi True Color Pro Nano CPL, lettered TRUE COLOR and PRO Nano CPL, lit against black

True Color CPL

Cut the glare.
Keep true colour.

A circular polariser built on NiSi True Color polarising film, in an ultra-slim two-tone aluminium frame. Sixteen threads, 40.5mm to 127mm.

  • 16 sizes
  • Pro Nano both sides
  • Cine seal edge
Shop the CPL

Get to know it

Choose your size

One polariser, sixteen threads.

Every size is the same filter. Match it to the filter thread on your lens.

NiSi True Color Pro Nano CPL standing on edge, showing the black front ring and silver back ringAluminium frame

True Color Pro Nano CPL

A circular polariser that cuts reflections without warming the scene.

  • True Color polarising film
  • Ultra-slim two-tone aluminium frame
  • Cine seal blackened edge
  • Pro Nano coating, both sides
40.5mmShop size 43mmShop size 46mmShop size 49mmShop size 52mmShop size 55mmShop size 58mmShop size 62mmShop size 67mmShop size 72mmShop size 77mmShop size 82mmShop size 86mmShop size 95mmShop size 105mmShop size 127mmShop size

Not sure of your thread? It is printed on the front of the lens or inside the lens cap, next to the diameter symbol.

Two more ways to buy the same glass sit in this category: the brass frame version, and the Armor FX UV plus True Color CPL bundles for the sizes you use most.

Why True Color

A polariser that leaves the colour alone.

Most polarisers warm the scene. This one is built not to.

01 / 07

No warm cast to correct

Many polarisers push skies and skin tones warm or yellow, and you spend the edit pulling it back out. NiSi True Color polarising film keeps the scene neutral, so what you shot is what you saw.

A volcano across still water at dusk, the blues held neutral, photographed with the NiSi True Color CPL

02 / 07

Ultra-slim, two-tone

A silver back ring and a black front ring, both machined from high-quality aluminium. The slim profile keeps vignetting down on wide lenses, and a lens cap still threads straight onto the front.

NiSi True Color Pro Nano CPL on edge on white, the black front ring and silver back ring visible

03 / 07

Turn it to cut the glare

Rotate the filter to pull non-metallic reflections off water, glass, wet rock and foliage. Skies deepen, clouds gain contrast, haze drops back, and what is under the surface comes through.

A rainforest waterfall over mossy rock, the shine lifted off the wet stone by the NiSi True Color CPL

04 / 07

Pro Nano on both sides

NiSi Pro Nano multi-layer coating on both surfaces cuts internal reflections and makes the glass water and oil repellent. Spray, rain and fingerprints wipe off instead of smearing.

Water beading into tight droplets on the Pro Nano coated glass of the NiSi True Color CPL

05 / 07

Cine seal on the edge

The edge of the polarising element is blackened and sealed. That adds durability, holds the filter steady through temperature swings, and keeps condensation out of the assembly.

The back of the NiSi True Color CPL against black, showing the sealed blackened edge of the element

06 / 07

Knurled for cold fingers

The frame edge is knurled the whole way around, so mounting and removing the filter is quick even when your hands are wet, cold or gloved.

Close view of the knurled frame edge of the NiSi True Color Pro Nano CPL, lit against black

07 / 07

40.5mm to 127mm

Sixteen thread sizes, from compact primes to large-diameter wide-angle and telephoto glass. Buy the size your lens takes, or size up and use a step-up ring.

The 127mm NiSi True Color Pro Nano CPL at three quarters against white, the largest thread size in the range

Filter on and off

See what the polariser does.

Two frames, each one photograph split down the middle. Same exposure on both sides. The only difference is the filter.

Reflections on glass

The lower half is the bare lens: the facade is a sheet of white glare. The upper half is the same building through the True Color CPL, with the glass and the frames behind it visible again.

A glass tower, split across the frame: the lower half without a filter is blown out with reflection, the upper half with the NiSi True Color CPL shows the facade
Glass facadeOne frame, split

Through the surface

On the left the shallows are a milky sheet of sky. On the right the polariser takes that reflection off and the stones on the lake bed come through, with the blues left neutral.

A volcano across a lake, split down the middle: the left half without a filter shows reflection on the water, the right half with the NiSi True Color CPL shows the stones beneath it
Lake shallowsOne frame, split

The same scene, with and without

Four pairs shot back to back on the same lens. These were photographed with the brass frame build of the True Color CPL, which uses the same optic as the filters on this page.

Waterfall and rock pool

The polariser takes the sky off the surface of the pool, and the rust-coloured stones on the bottom come through.

A waterfall falling into a rock pool, the rust coloured stones on the bottom showing through the water, photographed without a NiSi True Color CPL
Waterfall and rock poolNo filter
A waterfall falling into a rock pool, the rust coloured stones on the bottom showing through the water, photographed with a NiSi True Color CPL
Waterfall and rock poolTrue Color CPL

Mountain bay

Shallow water over rock. Without the filter the surface reflects the sky; with it you see straight to the bottom.

A calm bay below a mountain range, with submerged rocks visible through clear shallow water, photographed without a NiSi True Color CPL
Mountain bayNo filter
A calm bay below a mountain range, with submerged rocks visible through clear shallow water, photographed with a NiSi True Color CPL
Mountain bayTrue Color CPL

Tidal boulders at sunset

Low sun on wet stone. The polariser cuts the sheen off the boulders and the pool between them holds its reflection.

Large smooth boulders in a tidal pool at sunset, with mountains behind, photographed without a NiSi True Color CPL
Tidal boulders at sunsetNo filter
Large smooth boulders in a tidal pool at sunset, with mountains behind, photographed with a NiSi True Color CPL
Tidal boulders at sunsetTrue Color CPL

Farmland and sky

No water here at all. This is the other half of what a polariser does: deeper sky, richer greens, no colour shift.

Rolling farmland with a white farmhouse under a sky of broken cloud, photographed without a NiSi True Color CPL
Farmland and skyNo filter
Rolling farmland with a white farmhouse under a sky of broken cloud, photographed with a NiSi True Color CPL
Farmland and skyTrue Color CPL

Shot with the True Color CPL

Wet rock, moving water and foliage are where a polariser earns its place.

A mountain lake at first light with a clean reflection, shot with the NiSi True Color CPL
Mountain lakeTrue Color CPL
A mossy forest boardwalk with deep green foliage, shot with the NiSi True Color CPL
RainforestTrue Color CPL

Specifications

The details.

Filter typeTrue Color circular polariser
Polarising filmNiSi True Color
CoatingNiSi Pro Nano multi-layer, both surfaces, water and oil repellent
FrameUltra-slim two-tone aluminium, silver back ring, black front ring, knurled edge
Edge treatmentCine seal, blackened and sealed element edge
Front threadTakes a standard lens cap directly
Thread sizes40.5, 43, 46, 49, 52, 55, 58, 62, 67, 72, 77, 82, 86, 95, 105 and 127mm
Also in this rangeBrass frame version, 40.5mm to 105mm
Please noteBecause of the frame design this filter is not compatible with every lens hood

Video

Watch the True Color CPL.

Nothing loads until you press play.

NiSi True Color Pro Nano CPL Circular Polarising Filter, video Overview NiSi True Color Pro Nano CPL Circular Polarising Filter

Questions

Before you buy.

Which size do I need?

The size of your lens filter thread. It is printed on the front of the lens or inside the lens cap, next to the diameter symbol. The True Color CPL comes in 40.5, 43, 46, 49, 52, 55, 58, 62, 67, 72, 77, 82, 86, 95, 105 and 127mm.

What does a CPL actually do?

It removes reflections and glare from non-metallic surfaces: water, glass, foliage, painted surfaces and wet rock. Rotate the filter to set how much. Along the way skies deepen, clouds gain contrast, atmospheric haze drops and you can see into shallow water.

What does True Color mean on a polariser?

Most circular polarisers add a warm or yellow cast that shifts skies and skin tones. NiSi True Color polarising film is made to keep colour neutral and accurate, so images need less correction afterwards.

Does it cost me light?

Yes. Every circular polariser absorbs some light, so you lose a little shutter speed or gain a little ISO. Fit the filter and rotate it to where you want it before you meter, because the reading changes as it turns.

Will it work under my lens hood?

Not on every lens. Because of the frame design this filter is not compatible with all lens hoods, so check the fit if you shoot with the hood on.

What is Cine seal?

The edge of the polarising element is blackened and sealed rather than left raw. It adds durability, reduces the effect of temperature swings on the assembly, and keeps condensation out.

How should I clean it?

Blow the dust off first, then wipe with a clean microfiber cloth. If you need fluid, use an alcohol-free lens cleaning fluid: never put anything containing alcohol on the coating. The NiSi Nano Optical Cleaning Kit has both.

Aluminium frame or brass frame?

The same True Color polarising film is behind both. The aluminium version is the two-tone frame shown here, in sixteen sizes to 127mm. The brass frame version runs 40.5mm to 105mm, threads more smoothly onto the lens and adds a removable adjustment knob.

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