Prime Plasma Sputtering C-P.L

Marumi Prime Plasma Sputtering C-P.L

Achieved through breakthrough Plasma Sputtering Coating Technology, the Marumi Prime Plasma Sputtering C-P.L (Plasma CPL) offers exceptional clarity and absolute color neutrality. By reducing surface reflectance to 0.18%*, it delivers true-to-life color reproduction and enhanced contrast without any unwanted color shift—allowing precise control of reflections on water, glass, or other non-metallic surfaces.

• Absolutely close to the neutral gray, correcting the yellowish color shift commonly found in conventional polarizers. Contrast-enhanced, more saturation is provided, and the blue sky will be vividly deepened
• Plasma Sputtering Coating with twenty-eight multilayers on both sides achieves ultra-low reflectance of 0.18% (420–680 nm average, Typical Value)* and exceptional scratch resistance —exceeding steel wool #0, far beyond 9H pencil hardness on the glass surface
• The static quick-discharge structure prevents electrostatic buildup. Dust and dirt hardly adhere to the surface; even if they do, the blower blows them off quickly and easily
• Water- and oil-repellent coating repels water with just an air blower. Sweat, lotion, fingerprints, and grease wipe off effortlessly
  
• While color neutrality is given priority to avoid a yellowish color shift, the transmittance remains 33%. (400-700nm average, Typical Value)*
• Realized an ultra-thin aluminum rotating mount to avoid vignetting
• Teflon coating on male threads makes attach-/detachment to/from the lens smoother
  
• Knurling enables easy and smooth handling, embedded in the lightweight and thin aluminum frame
• Made in Japan, proven lamination technology refined over decades.
  

*Verified by factory spectrophotometer measurements. Details review in "TECHNICAL DATA".

Picture taken with Plasma CPL by ©LUKE H. OZAWA

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What are the benefits of using a polarizing filter?
Why is a polarizing filter recognized among most photographers as an essential must-have? Does Photoshop or another equivalent editing tool work instead of a polarizer?

A polarizing filter allows you to;
- control reflections from non-metallic objects; the surface of water, window, or glossy coating/painting.
- To prevent and reduce glare, but still allow plenty of light through. It also makes subjects underwater transparent.
- Enhance color saturation and contrast, especially under a scene of deep blue sky, vivid white clouds, spring greenery, or autumn color of leaves.

Have you ever experienced, when taking landscape photography, ending up with a little different color from the actual landscape you have seen? The sky must have been more vivid and bluish in your eyes.
A polarizing filter can properly contrast the crystal blue sky and the white clouds.
Many photographers predominantly carry a polarizing filter, particularly for landscape photography next step after Lens Protector/UV filter in terms of protection, for some reason.
The effects of polarizers cannot be easily mimicked with digital editing. Carrying a polarizer makes your image more vivid and clear, turning the actual landscape you've seen into your picture.

Picture taken with Plasma CPL by ©Noriko Kita

Picture taken with Plasma CPL by ©Koji Yoneya

Photographers should keep in mind that a polarising filter will reduce a certain amount of light passing through the camera body in exchange for giving a polarizing effect.
Therefore, it is better not to use a polarizer under poor light conditions.
It is also better to consider attaching a High-Transmittance Circular Polarizer (HTC) close to one F-stop, while other conventional polarizers are equivalent to 1.5 stops.

In post-production, the Polarizing effect cannot be reproduced because it changes the light entering your lens.
Those are the reasons why the Polarizing filter is a must-have filter.

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