UV filter Calumet 72 mm Ultra Slim MC, 24-layer multi-coating

The Calumet UV filter 72 mm Ultra Slim MC with 24-layer multi-coating is a protective optical accessory designed to reduce ultraviolet light and protect camera lenses from dust, moisture and surface scratches. Its slim-profile aluminium frame is engineered to minimize vignetting on wide-angle lenses while providing a flat, unobtrusive front element. Multi-coating on both sides reduces reflections, helps maintain image contrast and colour fidelity, and improves light transmission for clearer results in outdoor and high-contrast conditions.

Advantages

The Ultra Slim construction decreases the risk of vignetting on wide-angle lenses and allows comfortable use with lens hoods and stacked filters. The 24-layer multi-coating provides enhanced anti-reflective performance, reducing ghosting and flare. The filter also acts as a mechanical barrier against dust, fingerprints and incidental impacts, extending the working life of the lens surface without affecting autofocus or exposure metering in modern DSLR and mirrorless systems.

Suitable for

• Travel and landscape photography with wide-angle and standard lenses
• Outdoor shooting in bright sunlight to reduce UV haze
• Everyday protection of camera lenses during transport and use
• Photographers using DSLR and mirrorless cameras with 72 mm filter threads

Key specifications

• Filter diameter: 72 mm
• Frame type: Ultra Slim aluminium frame to minimize vignetting
• Optical treatment: 24-layer multi-coating on both surfaces
• Primary function: Ultraviolet light reduction and lens surface protection
• Compatibility: Designed for lenses with 72 mm front threads

How to use

Screw the filter onto the front thread of a lens with a matching 72 mm diameter until it seats gently; avoid overtightening. Use the filter as a permanent protective element on the lens or attach it when shooting outdoors to reduce UV haze. Clean the coated glass with a microfiber cloth and lens cleaning fluid when needed, and store the filter in its protective case when not in use to prevent scratches or contamination.

Usage recommendations

For best results, check that the slim frame does not interfere with any attached wide-angle lens hood. When stacking filters, monitor for potential vignetting; remove the filter if corrective filters with strong optical effects are required. Regularly inspect the coating and clean with appropriate lens-care tools to preserve anti-reflective performance.