Back in December 2015, Sigma announced the world’s first protective lens filters made of ceramic — filters that it claims are 10x stronger than traditional filters and 3x stronger than chemically strengthened filters. Sigma has just published pricing and availability info for the new filters, as well as the above video, which demonstrates the filter’s […]
Back in December 2015, Sigma announced the world’s first protective lens filters made of ceramic — filters that it claims are 10x stronger than traditional filters and 3x stronger than chemically strengthened filters. Sigma has just published pricing and availability info for the new filters, as well as the above video, which demonstrates the filter’s […]
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