Camera lens filter Rollei 26231 Ultraviolet (UV) 49 mm

Rollei 26231 Ultraviolet (UV) 49 mm is a screw-in camera lens filter designed to reduce the influence of ultraviolet light and atmospheric haze while providing basic front-element protection. The filter uses transparent UV glass in a black metal frame and fits lenses with a 49 mm filter thread. It is intended for landscape, outdoor and film photography where reduced UV scatter improves perceived sharpness and colour neutrality.

Advantages

This 49 mm UV filter reduces ultraviolet components of natural scattered light that can cause bluish colour casts and slight loss of clarity. By limiting UV transmission it helps prevent blurring and chromatic effects associated with strong UV lighting. The filter also serves as a protective barrier for the lens front element, reducing the risk of scratches, dirt and light impacts on the optical surface. The black metal frame ensures stable mounting and compatibility with lenses that accept 49 mm filters.

Suitable for

• Landscape photography to reduce atmospheric haze and blue cast
• Outdoor and travel photography where lens protection is needed
• Film and digital workflows that benefit from more consistent colour rendering
• General-purpose everyday protection for lenses with 49 mm thread

Key specifications

• Filter type: Ultraviolet (UV) filter
• Filter diameter: 49 mm (screw-in)
• Glass: transparent UV optical glass
• Frame: black metal screw ring
• Pack quantity: single unit
• Primary functions: UV reduction, haze suppression, front-element protection

How to use

Screw the Rollei 26231 UV filter onto the front thread of a lens with a 49 mm filter mount until it is lightly seated; avoid overtightening. Use the filter on bright, sunlit days or in conditions with visible atmospheric scattering to reduce UV-induced blue cast and improve perceived clarity. When not in use, store the filter in a protective pouch or case to keep the glass free from dust and scratches. Clean the glass with a blower, soft brush or microfibre cloth and appropriate lens cleaning fluid when necessary.

Usage recommendations

Use the filter mainly outdoors and for landscape work where UV and haze reduction is desired. Leave the filter mounted as a protective measure when transporting or using the lens; remove or replace it only if it introduces unwanted reflections in specific high-contrast or multi-filter setups. Regularly inspect and gently clean the glass to maintain optical performance.