Calumet UV Filter SMC TG 72 mm Ultra Slim 28 Layers — photographic lens protection

The Calumet UV Filter SMC TG 72 mm Ultra Slim 28 Layers is a screw-in photographic accessory that reduces ultraviolet light entering the lens and provides physical protection for the front element of lenses with a 72 mm filter thread. Its ultra-slim frame is designed to minimise vignetting on wide-angle lenses, while a multi-layer anti-reflective treatment enhances light transmission and helps reduce flare and ghosting. The filter is intended for photographers who need everyday lens protection and clearer outdoor images in variable lighting conditions.

Advantages

The ultra-slim profile lowers the risk of vignetting on wide-angle and short focal length optics. The 28-layer coating improves contrast and colour fidelity by reducing reflections on filter surfaces. Constructed to sit securely in the lens thread, it offers physical protection against dust, scratches and light impact without altering focal characteristics. The combination of UV attenuation and high-transmission coatings maintains image clarity while keeping exposure behavior consistent.

Suitable for

• Outdoor landscape and travel photography where UV reduction and lens protection are required
• Wide-angle lenses that benefit from a slim filter profile to avoid vignetting
• Everyday use to protect the front element from dust, fingerprints and minor impacts
• Photographers seeking improved contrast and reduced flare in bright or backlit conditions

Key specifications

• Filter type: UV (ultraviolet) filter
• Mount/thread size: 72 mm screw-in
• Frame style: ultra-slim to minimise vignetting
• Coatings: multi-layer anti-reflective treatment (28 layers)
• Primary functions: UV attenuation, front element protection, reduced reflections

How to use

Screw the filter gently into the 72 mm front thread of a compatible lens until it is secure; avoid overtightening to prevent thread damage. Use the filter during outdoor daylight shooting to reduce the influence of ultraviolet light and to protect the lens surface from dust and scratches. Clean the coated glass with a soft microfiber cloth and appropriate lens cleaning fluid, wiping gently in a circular motion to avoid abrasion of the coating.

Usage recommendations

For best results, confirm your lens has a 72 mm filter thread and check for any vignetting when using wide-angle focal lengths. Store the filter in a protective case when not in use and remove it only when necessary for stacking other accessories or for specific optical requirements.