Adjustable-Focus Lens A lens that has adjustable distance settings. Agitation Keeping the developer, stop bath, or fixer in a gentle, uniform motion while processing film or paper. Agitation helps to speed and achieve even development and prevent spotting or staining. The available light completely surrounding a subject. Light already existing in an indoor or outdoor setting that is not caused by any illumination supplied by the photographer.
Anamorphic lens is a lens capable of compressing a wide angle of view into a standard frame.
The area of a scene that a lens covers or sees. Angle of view is determined by the focal length of the lens. Aperture Lens opening. The opening in a camera lens through which light passes to expose the film. The size of aperture is either fixed or adjustable.