Protecting the lens from dust dirt and scratches the 72mm protector filter attaches via the filter thread on the lens featuring an advanced super ebc electron beam coating to control ghosting and flares the protector filter has minimal reflection maximum of 03 so image quality is not affected the thin frame design prevents vignetting when using 2 filters together please note to fit the 72mm protective filter to the finepix s1 the finepix s1 adaptor ring is also required adapter r