Neutral density filter describes a gray camera filter which has an equal opacity to all the colors of the spectrum and so does not affect the colors in the final image. It is used to reduce the amount of light entering the camera when aperture or shutter settings must remain constant. Neutral filtration in color printing is the filtration at which color balance is achieved, rendering a neutral gray ion the film image as a neutral gray on the photographic paper. Neutralizer is a chemical designed to counteract and make inactive another chemical solution. New Objectivity is an approach to the subject matter of photography originating in Germany in the 1920s.
New Realism is an alternative name for New Objectivity .
Newton's rings are rings of colored light produced when two glass or transparent surfaces are in partial contact. Niepce, Joseph Nicephore 1765-1833. Frenchmen credited as the inventor of photography. In 1826, using a camera, he fixed a permanent positive image on a pewter plate coated with bitumen of Judea. Nitraphot is a tungsten filament lamp similar to the photoflood but with a longer working life.