[A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y]
ZLR - Zoom lens reflex camera (see below)
ZONE SYSTEM - A method introduced by photographer Ansel Adams for determining optimal exposure and appropriate development for an individual photograph.
ZOOM - The action of varying the focal length of a zoom lens to enlarge (zoom in) or reduce (zoom out) the image.
Nikon's AF-S VR Zoom-Nikkor 70-200mm f/2 is a zoom lens.
ZOOM LENS -Also called a "Variable focus lens." A lens in which focal length is variable. Elements inside a zoom lens shift their positions, enabling the lens to change its focal length - in effect, providing one lens that has many focal lengths within a given range - e.g. 70mm to 200mm (as illustrated by the lens shown above).
ZOOM LENS REFLEX camera - Also known as a ZLR camera. A prosumer camera that has advanced features that are similar to an SLR (Single Lens Reflex) camera, but has a permanently fixed zoom lens instead of the ability to interchange lenses.