Lantern slides is an old term used to describe transparencies. Large format camera is a general term for any camera having a picture format of 4 x 5 inches or larger. Laser is an abbreviation for Light Amplification by Stimulated Emission of Radiation. Latensification is a method of increasing relative film speed by fogging after exposure and before development. It can be achieved by chemical or light means.
Latent image is the invisible image produced by exposure which can be made visible by development.
Lateral reversal is a mirror image reversal of the subject from left to right, as found in the viewfinders of some reflex cameras. Latitude is the degree by which exposure can be varied and still produce an acceptable image. The degree of latitude varies by film type. Faster films tend to have greater latitude than slower films. LCD stands for liquid crystal diode.