High Grade Multi-Coated, Multi-Threaded, Circular Polarizing Filter (52mm) + Nwv Direct Microfiber Cleaning Cloth. (Alternative For Panasonic DMW-LPL52) Increases color saturation and contrast by reducing reflections from non-metallic surfaces and by cutting through haze Deepens sky color Generally requires through-the-lens viewing Threaded mount Filter Factor Between 2.1 and 2.5 (approx. +1.2 stops)