1.2 Optical Density | Dual-Side Nano Multicoating | 4mm Thick Optical Glass | Darkens Image / Filters Out IR Pollution | Flat Attenuation of Visible and IR Light
0.3 Optical Density | Dual-Side Nano Multicoating | 4mm Thick Optical Glass | Darkens Image / Filters Out IR Pollution | Flat Attenuation of Visible and IR Light