ND400 Neutral Density Filter - Absorptive 0.01% Transmission

ND400 absorptive neutral density filters have an optical density of 4.0, meaning that they transmit an average of 0.01% of visible light. Surprisingly, this amount of light passing through the filter is easily detectable by the human eye. Because the glass substrate is absorbing 99.99% of the light that passes into the filter, it is not recommended that these filters be used in laser applications or immediately in front of high wattage lamps. Useful Range : 425-675nm Optical Density : 4.0 Average Transmission: 0.01% Tolerance : +/- 0.003% Surface Quality : 40/20

Compare Products