Neutral Density. Usually applies on filter, filtration that can effectively reduce the amount of light passes to the film. In some filters, half ND filters can be very effective to lower the contrast, esp the sky to achieve more balance effect. Lens like reflex lenses, where its aperture is fixed, ND filter can be the only way to play around with e... Found on http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl
Abbreviation for Négociant Distributeur; see there. Négociant distributeur French designation (often abbreviated as ND), valid exclusively for... Full text Found on https://glossary.wein.plus/nd