What is the transmission of the Lumicon Neutral Density Filter?
Frequently Asked QuestionsLumicon’s Neutral Density Filter is available in three transmissions: 13%, 25% and 50%. This means that they are blocking 87%, 75% and 50% of the light across the visible spectrum. Only for lunar and planetary observing, and even then, the only useful combination is probably a neutral-density or polarizing filter to reduce glare, in series with a color filter to enhance specific details.
