The Olympus 40.5mm PRF-D40.5 PRO Protection Filter is a simple, clear filter designed for general protection for your lens. This optically clear filter does not affect the overall image quality while helping reduce dust, scratches, moisture, and other elements from damaging your lens.
It is constructed from multi-coated optical glass for optimized light transmission and optical quality, and it features an aluminum filter ring for durability and rigidity.