Lens Shade A collar or hood at the front of a lens that keeps unwanted light from striking the lens and causing image flare. May be attached or detachable, and should be sized to the particular lens to avoid vignetting. A fast lens transmits more light and has a larger opening than a slow lens. Lightbox is a box of fluorescent tubes balanced for white light and covered with translucent glass or plastic. Used for viewing, registering or correcting film negatives and positives.
Light sources is a general term applied to any source of light used in photography.
Light tent is a tent like structure made of translucent material hung around a frame. The fabric diffuses the light coming from outside the tent so that highly reflective subjects placed inside the tent can be photographed without reflections. Light-tight is a term denoting a material or piece of equipment that is impervious to light. Light trail is an image track recorded on photographic material when a point of light is shifted during exposure. Low key is a photograph in which tones are predominantly dark and there are few highlights.