Made from hardened glass that is virtually unbreakable. UV filter with a diameter of 77 mm. Constructed from hardened glass: four times stronger than standard filter glass. A light transmission of 99% ensures no image degradation or light loss. The Cinema Series glass also supports the largest camera sensors. The Armor UV is made from hardened glass that is practically indestructible, serving as the first line of defense for your lens against elemental influences such as rocks, dust, and debris. This filter not only offers four times the strength of conventional filter glass but also provides 99% light transmission, guaranteeing unaltered image quality without compromise or light loss, and resolves the largest camera sensors with our industry-leading optical polish of the Cinema Series.