Athabasca ARK Reverse GND filters are made of German Schott B270 optical glass. The use of Schott optical glass gives our square filters excellent properties of chemical resistance, high temperature resistance, and abrasion resistance. With an ultra-thin noble metal multi-coating, Athabasca square filters are with low reflection and able to avoid color differences while also being water, stain and scratch resistant. Athabasca ARK Reverse GND filters are normally used on sunrise or sunset condition where the brightest point is on horizon.
Deskripsi Athabasca ARK II Reverse GND4 (0.6) Athabasca ARK Reverse GND filters are made of German Schott B270 optical glass. The use of Schott optical glass gives our square filters excellent properties of chemical resistance, high temperature resistance, and abrasion resistance. With an ultra-thin noble metal multi-coating, Athabasca square filters are with low reflection and able to avoid color differences while also being water, stain and scratch resistant. Athabasca ARK II Reverse GND4 (0.6) Specification: Material : German Schott B270 Optical Glass Thickness : 2mm Coating: Water repellent, Stain and scratch resistant Double-side anti-reflective coating