Camera lens filter Calumet CPL SMC 82 mm Ultra Slim 28 Layers

Calumet CPL SMC 82 mm Ultra Slim is a circular polarizing filter designed for lenses with an 82 mm thread. The filter uses a 28-layer multi-coating to reduce reflections and glare from non-metallic surfaces, increase color saturation and contrast, and improve the rendering of skies and foliage. Its ultra-slim frame is engineered to minimize vignetting on wide-angle lenses while remaining compatible with standard screw-in lens hoods and accessories.

Advantages

The 28-layer SMC (super multi-coating) reduces internal reflections and ghosting for more neutral color reproduction and improved contrast. As a circular polarizer, it enables control over reflections from glass and water and darkens blue skies selectively. The ultra-slim metal frame decreases the risk of vignetting when used on wide-angle lenses and keeps the filter profile low for stacked use. High optical quality glass preserves image sharpness and detail across the frame.

Suitable for

• Landscape photography to deepen sky tones and increase foliage saturation
• Outdoor and travel photography where glare from water and reflective surfaces is present
• Architectural and urban photography to reduce reflections in windows and glass facades
• Wide-angle lens use where a slim profile is required to avoid vignetting

Key specifications

• Filter type: Circular polarizer (CPL)
• Mount thread diameter: 82 mm
• Coating: 28-layer multi-coating (SMC)
• Frame design: Ultra-slim metal frame to reduce vignetting
• Optical element: High-quality coated glass for sharpness preservation

How to use

Screw the filter onto the front of any lens with an 82 mm thread until it is secure but not overtightened. Rotate the outer ring while looking through the viewfinder or at the live view to adjust the degree of polarization until reflections are reduced and sky contrast is as desired. For scenes that require maximum light transmission, check exposure and compensate if necessary since the CPL reduces some incoming light. Remove or reposition the filter when using very wide-angle compositions if any residual vignetting appears.

Usage recommendations

Use the Calumet CPL SMC 82 mm Ultra Slim when shooting outdoors in daylight to control reflections and enhance color saturation. Combine it with a lens hood to protect the glass and reduce stray light. When stacking filters, monitor for vignetting and image degradation; if stacking is necessary, consider low-profile solutions. Clean coated surfaces with a microfiber cloth and appropriate lens cleaner to preserve the multi-coating performance.