ARK II ND400
(Reduced exposure grade 9 stops Material Optical glass)
Athabasca ARK II ND400
Specification of the filters£º
75mm¡Á75mm 100mm¡Á100mm 150mm¡Á150mm 170mm¡Á170mm
ND 8: 12.5%(1/8) light is allowed in or 87.5% light is blocked out.
ND 16: 6.25%(1/16) light is allowed in or 93.75% light is blocked out.
ND 32: 3.5%(1/32) light is allowed in or 96.5% light is blocked out.
ND 64: 1.55%(1/64) light is allowed in or 98.45% light is blocked out.
ND 400: 0.25%(1/400) light is allowed in or 99.75% light is blocked out.
ND 1000: 0.1%(1/1000) light is allowed in or 99.99% light is blocked out.
Reviews Athabasca ARK II 75x75mm Neutral Density ND400 Filter