Popular for action-sequence photography and for recording images by remote control. Multiple exposure is the technique of making more than one exposure on the same film frame, normally so that the images are superimposed. Multiple flash is the use of more than one flash unit, usually operating simultaneously to light a subject. The developed film that contains a reversed tone image of the original scene. Negative Holder A device designed to hold the negative in proper position in an enlarger.
Neutral density is a technique which makes possible shorter printing times in color printing.
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. Normal Lens A lens that makes the image in a photograph appear in perspective similar to that of the original scene. A normal lens has a shorter focal length and a wider field of view than a telephoto lens, and a longer focal length and narrower field of view than a wide-angle lens. A meter which determines exposure by reading light reflected from the film during picture-taking.