Sigma has created an all-new protective filter, the Sigma Water Repellent (WR) Ceramic Protector, using Clear Glass Ceramic with water and oil repellent coating. This is the first filter to use such a material in its construction. It promises both lighter weight and higher strength than normal protective filters with minimal effects on transmittance and sharpness. It will be available in common filter thread sizes between 67mm and 105mm. See the press release below for more info, or take a look ...
Sigma has created an all-new protective filter, the Sigma Water Repellent (WR) Ceramic Protector, using Clear Glass Ceramic with water and oil repellent coating. This is the first filter to use such a material in its construction. It promises both lighter weight and higher strength than normal protective filters with minimal effects on transmittance and sharpness. It will be available in common filter thread sizes between 67mm and 105mm. See the press release below for more info, or take a look ...
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