UV Filter Calumet 52 mm Ultra Slim 28-Layer SMC TG for Lens Protection

Calumet UV Filter 52 mm Ultra Slim SMC TG is a thin-profile ultraviolet protection filter designed to attach to lenses with a 52 mm thread. The filter uses a 28-layer anti-reflective coating to reduce flare and ghosting while shielding the front element from dust, moisture and minor scratches. Its ultra-slim frame helps to minimise vignetting on wide-angle lenses and keeps the optical performance close to native lens characteristics for everyday and outdoor photography.

Advantages

The 28-layer SMC TG coating improves light transmission and reduces reflections across visible and near-UV wavelengths, helping to maintain contrast and colour fidelity. The ultra-slim aluminium mount reduces the risk of vignetting on wide-angle optics and keeps overall weight and bulk to a minimum. The screw-in design provides reliable mechanical protection for the lens front element and makes removal and replacement straightforward.

Suitable for

• General outdoor photography where front-element protection is required
• Wide-angle lenses that are sensitive to filter-induced vignetting
• Travel and street photography where a lightweight protective filter is preferred
• Situations requiring reduced flare and improved contrast, such as backlit scenes

Key specifications

• Filter type: Ultraviolet (UV) filter for lens protection
• Mount diameter: 52 mm screw thread
• Frame: Ultra-slim aluminium profile to minimise vignetting
• Coating: 28-layer SMC TG anti-reflective coating to reduce reflections and flare
• Optical effect: Neutral transmission in visible spectrum, reduces UV-induced haze

How to use

Align the filter threads with the lens front thread and gently screw it in clockwise until it is snug; avoid overtightening. Use the filter in place for routine shooting to protect the front element from dust, fingerprints and light impacts. When strong polarising or neutral density effects are required combine with compatible screw-on filters or use alternative filter systems; remove the UV filter if it interferes with specialised optical accessories.

Usage recommendations

Clean the filter surface with a soft microfiber cloth and appropriate lens cleaning solution before use. Store the filter in a protective case when not attached to the lens to prevent scratches. On ultra-wide lenses, check for vignetting at the widest focal length and, if necessary, use a dedicated slim or gel solution for full-frame coverage.