Featuring a fully revamped physical design, this 55mm PUV-21 Water-Resistant Protector & UV Filter matches the visual identity and pristine optical quality of Sigma lenses. Fashioned from clear optical glass, the filter absorbs ultraviolet light, reducing the bluish cast of daylight. It protects the front element of your lens against dust, dirt, and scratches, and has a water-resistant optical coating that repels liquids.
Sporting an improved surface treatment on its metal frame, the PUV-21 reduces internal reflections, ensuring a clean image. The filter is compatible with all Sigma lenses and boasts an improved low-profile design that prevents vignetting, even when shooting on ultrawide-angle glass.