Sigma 86mm wr clear glass ceramic protector
Characterized by its uniquely durable construction the wr ceramic protector filter is a clear filter designed to guard the front of a lens from impacts scratching and other elements developed using a clear glass ceramic substrate this filter blends a high 9976 transmittance value with greater hardness than chemically strengthened glass greater flexibility than sapphire crystal glass this results in a build that is shock scratch resistant to withstand a variety of impacts while shooti