Clear Protection Filter, Reduces Dust, Scratches, Moisture, 1x Filter Factor, +0 Stop, No Effect on Image, Multi-Coated, Super Electron Beam Coating, 49mm Front Filter Threads, Plastic Case The 49mm Protector Filter from Fujifilm is a simple clear filter with a 1x filter factor and is designed to provide general protection for those lenses as well as any other lens with a 49mm front filter thread. This optically clear filter does not affect the overall image quality while helping reduce dust scratches moisture and other elements from damaging your lens. This filter is multi-coated and features Super Electron Beam Coatings to help reduce flare and improve light transmission.