Related Words

Variable Focus Lens: Is a lens whose focal length can be continually varied within a given range. Also known as a zoom lens.

Single Lens Reflex (SLR): Stands for single lens reflex. It is a camera of 35mm or medium format in which a system of mirrors shows the user the image precisely as the lens renders it.

Single-Lens Reflex (SLR): An SLR, or single-lens reflex, camera is named for its picture-taking mechanism. In a film SLR, the viewfinder uses a 45°-angled mirror to see through the lens; that mirror snaps out of sigh . . . View Full Definition

Shallow Focus: A small depth of field, with just one plane (foreground, middle-ground, or background) in focus.

Selective Focusing: Method of adjusting the lens aperture and shutter speed to give a depth of field that will limit image sharpness to a particular area of the image.

Reflex Lens: Alternative term for mirror lens.

Retrofocus: Type of lens design with a negative lens element positioned in front of the diaphragm and a positive lens element positioned at the rear of the diaphragm. This makes the distance from the re . . . View Full Definition

Slow Lens: Lens with a small maximum aperture, such as f/8.

Soft Focus: An entire image that is slightly out-of-focus.

Telephoto Lens: A long focal length which creates a narrow, but magnified view of an object or person.