Irix Edge Revo Circular Polarizer Filter 40.5mm - Slim Aluminum Frame, Super-Hardened Optical Glass, 16-Layer Anti-Reflective, Hydrophobic, Oleophobic, Scratch-Resistant Coating

Landscape and architecture photographers reaching for their 40.5mm-threaded lenses can cut through glare and haze with the Irix Edge Revo CPL. This circular polarizer tames reflections on water, glass, and foliage, while deepening blue skies and boosting color saturation for punchy, true-to-life images. Its slim aluminum frame keeps vignetting at bay even on wide-angle setups, and the knurled edge offers a secure grip when rotating the filter to dial in the perfect polarization effect.

Key specifications

• Filter type: Circular Polarizer (CPL)
• Filter diameter: 40.5 mm
• Optical material: Super-hardened optical glass
• Coatings: 16 layers (8 per side) – anti-reflective, hydrophobic, oleophobic, scratch-resistant
• Frame material: Aluminum, slim / low-profile
• Frame features: Knurled edges for grip, front filter thread
• Light transmission: High (minimal light loss)
• Polarization efficiency: High
• Water and oil repellent: Yes
• Vignetting: Minimized (slim frame design)
• Compatibility: Lenses with 40.5mm filter thread
• Series: Irix Edge Revo

Why choose it

The Revo CPL’s 16-layer coating not only suppresses internal reflections and flare but also repels water, oil, and dust, making cleaning effortless even in the field. The super-hardened glass withstands scratches and everyday knocks, while the slim aluminum profile ensures full compatibility with wide-angle lenses without corner darkening. You get a durable, high-transmission polarizer that preserves image sharpness and contrast.

Ideal use cases

• Landscape photography: saturate skies, cut atmospheric haze, and reveal detail in clouds.
• Architecture and cityscapes: reduce reflections from windows and polished surfaces.
• Water and nature: eliminate glare from lakes, rivers, and wet foliage.
• Travel and outdoor shooting: compact, rugged, and easy to keep clean.

Good to know

This filter is part of the Irix Edge Revo series, engineered for photographers who demand optical precision and field reliability. The front thread allows stacking additional filters or using a standard lens cap. For best results, rotate the filter while looking through the viewfinder or live view to achieve the desired polarization effect. Note that a CPL reduces light by approximately 1–1.5 stops, so adjust exposure accordingly.