SIGMA WR Ceramic Protector Filter

SIGMA WR Ceramic Protector Filter

YouTube WR Ceramic*Among filters for interchangeable lenses as of December 2015 (SIGMA research)SIGMA offers world’s first* Clear Glass Ceramic protective lens filters. Give your lenses the care they deserve with the true protector.
WR Ceramic Protector 50 percent thinner and weighs up to 30 percent less than previous SIGMA filters while offering a higher level of strength! The new SIGMA filter made with Clear Glass Ceramic offers over 10 times the strength of a conventional protective filter and over 3 times the strength of a high-strength protective filter made with chemically hardened glass of the same thickness.
The following promotional video contains details regarding this new revolutionary product;

 
*Among filters for interchangeable lenses as of December 2015 (SIGMA research)
Utilizing an advanced material known as “Clear Glass Ceramic”, the SIGMA WR CERAMIC PROTECTOR is a highly reliable filter with outstanding protective capabilities.
The shock resistance of the SIGMA WR CERAMIC PROTECTOR has undergone a rigorous drop ball test based on the ISO 12311:2013 standard using a 49g metal ball, 3 times the weight of a standard metal ball. The test proved the excellent shock resistance of SIGMA WR CERAMIC PROTECTOR compared to conventional protectors.