Hybrid Circular Polarizer (CPL) Filter

Polarizing film is a polymer multilayer composite material that can convert natural light into linearly polarized components. Just changing the etching arrangement spacing allows more light through to get a uniform polarization rate of 70% with 65% transmission for more natural-looking pictures.

PURE Hybrid CPL is STC’s globally unique coating technology designed to render natural, evenly balanced scenery that closely matches human visual perception. It moderately reduces localized reflections and atmospheric haze, restoring more scene details without causing color shift. With an ultra-low light reduction level, it doubles as an excellent polarizing and protective filter for travel photography. However, for situations requiring stronger reflection suppression, switching to the SHV CPL is necessary to achieve up to 99% polarization.

Hybrid CPL is the predecessor of PURE, originally developed to suit the preferences and environments of Asian users. It produces a slightly cooler (bluish) color temperature tone.

SHV CPL is specifically developed for maximum polarization performance (up to 99%). Its strength lies in significantly reducing surface reflections (note: 100% metallic reflections cannot be eliminated) and diffused atmospheric light, while enhancing overall color saturation and contrast (sunlight enhancement may slightly shift tones toward yellow). The trade-off is that under clear blue skies, it may cause uneven deepening of certain areas, such as making parts of the sky appear deep blue or blue-black.

Please note: Reflections cannot be fixed in post-processing, as overexposed highlights lose recoverable image data. To effectively control reflections, a proper filter must be used during the initial capture.

Patented Ultra Layer coating blocks UV light below 395nm, preventing haze and color cast in your photos.

We polish our lenses to a flatness of ±20μm for optimal imaging, with no bright spots or impurities above 20μm. Then we add our eco-friendly EU RoHS 2.0 standard double-sided multilayer nanocoating that is hydrophobic, anti-reflective (AR), anti-smudge (AS), wear-resistant, and antistatic, making it very easy to keep clean while also defogging quickly. 

Two sheets of 0.8mm Schott B270 optical glass around Nitto polarizer film with polarizing rate of up to 70% raises transmission to 1.3x ordinary CPL, resolves excess dimming and color cast problems.

For the rim, we use precision machining for a tough but lightweight aluminum alloy frame. The super slim 6mm design reduces vignetting when using a wide-angle lens. The inner circle is treated with non-stick Teflon and a matte black finish and the embossed frame is easy to rotate. The shock-absorbent frame also reduces the chance of damage to your lens if it takes a knock.