HD MC 77mm UV Protective Glass Filter for Sigma 17-50mm F2.8 EX DC OS HSM — 77mm Ultraviolet Filter

Durable optical glass designed for Sigma 17-50mm F2.8 EX DC OS HSM (77mm) lenses. Multi-coated surfaces and robust construction deliver 97% passthrough while helping to cut ultraviolet light (UV). Built into a low-profile, pressed aluminum frame for secure mounting and minimal vignetting.