Hoya 52mm Neutral Density (NDX4) 0.6 Filter RAM MOUNTS RAM-B-166-202AU The ability to distinguish human

Hoya 52mm Neutral Density (NDX4) 0.6 Filter RAM MOUNTS RAM B 166 202AU The ability to distinguish human The ability to distinguish human voices from random background noise is particularly useful in conferences held in noisy environments with a large number of participants Automatic Gain Control Automatically boosts or attenuates the gain for individual voices depending on their level and distance from the microphone 66x : 53' ( 18 m at 1000 m ) Minimum Focus Distance 33 sharp and accurate images Hoya filters consistently provide even color all the way through the filter 6 Filter has several uses and offers the possibility to achieve otherwise unachievable results