LCD stands for liquid crystal diode. LCD is an electronic solid state display system commonly used for the face of wrist watches, and also used to display exposure information in the viewfinder of most modern day cameras. A surface can be temporarily changed from transparent to dense black by application of a charge. The LCD can be programmed to display any required black shape. Lead acetate is a crystalline, highly poisonous powder used in some toning and intensifying solutions.
Leader is the beginning of a roll of film, which is attached to the camera's take up spool.
Leaf shutter see Between the lens shutter . LED stands for light emitting diode. LED is an indicator light used to convey exposure information. Lens is an optical element made of glass or plastic and capable of bending light. A lens may be constructed of single or multiple elements.