With its latest video, Sigma is trying to show off how strong their new ceramic filters really are. The filters, which according to Sigma are 10 times stronger than conventional filters and 3 times stronger than chemically hardened glass filters, are the world’s first ceramic filters. Surely, this gives many people pause since the technology has yet to be proven. Sigma has taken it upon themselves to drop a 49 gram metal ball onto several filters, including theirs, and see what happens. Let’s just say the results work in Sigma’s favor. The filters are available at B&H.