30.5mm

Clear Protective Filter Absorbs Ultraviolet Light Reduces Bluish Cast of Daylight 1x Filter Factor, No Exposure Change MRC Multi-Resistant Coating Nano Coating Thin Brass Filter Ring

Circular Polarizer Filter 99.5% Transmission, Kaesemann Foils 2 to 2.8x Filter Factor, +1 to 1.5 Stops Helps to Eliminate Reflections and Glare Reduces Haze in Landscapes Greater Color and Tonal Saturation MRC Multi-Resistant Coating Nano Coating Thin Brass Filter Ring