reflex mirror

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• Mirror cut-off — is a term used in photography for a problem that can occur within a reflex camera. This occurs when the mirror in the camera is smaller than the focusing screen and using long (telephoto) lenses. When light exits a non telephoto lens, the light… …   Wikipedia

• reflex camera — ► NOUN ▪ a camera with a ground glass focusing screen on which the image is formed by a combination of lens and mirror, enabling a scene to be correctly composed and focused …   English terms dictionary

• reflex camera — n. a camera in which the image formed by the lens is reflected by a mirror onto a ground glass plate to help in focusing …   English World dictionary

• reflex — reflexly, adv. reflexness, n. adj., n. /ree fleks/; v. /ri fleks /, adj. 1. Physiol. noting or pertaining to an involuntary response to a stimulus, the nerve impulse from a receptor being transmitted inward to a nerve center that in turn… …   Universalium

• Reflex finder — A reflex finder is a viewfinder system with a mirror placed behind a lens. The light passing through the lens is reflected by the mirror to a ground glass. The image formed on this ground glass can be observed directly, giving a waist level… …   Wikipedia

• Mirror neuron — A mirror neuron is a neuron that fires both when an animal acts and when the animal observes the same action performed by another.[1][2] [3] Thus, the neuron mirrors the behaviour of the other, as though the observer were itself acting. Such… …   Wikipedia

• reflex — adjective /ˈriflɛks / (say reefleks) 1. Physiology denoting or relating to an involuntary response in which an impulse evoked by a stimulus is transmitted along an afferent nerve to a nerve centre, and from there through one or more synapses to… …  

• Mirror lock-up — With mirror lock up the mirror (2) flips up towards (5) well before the shutter (3) opens. As a result light no longer reaches the eyepiece (8). Mirror lock up (often abbreviated to MLU) is a feature employed in many Single Lens Reflex (SLR)… …   Wikipedia

• reflex — adj. & n. adj. 1 (of an action) independent of the will, as an automatic response to the stimulation of a nerve (e.g. a sneeze). 2 (of an angle) exceeding 180°. 3 bent backwards. 4 (of light) reflected. 5 (of a thought etc.) introspective;… …   Useful english dictionary

• reflex — re•flex adj., n. [[t]ˈri flɛks[/t]] v. [[t]rɪˈflɛks[/t]] adj. 1) phl noting or pertaining to an involuntary response to a stimulus, the nerve impulse from a receptor being transmitted inward to a nerve center that in turn transmits it outward to… …   From formal English to slang

• reflex camera — a camera in which the image appears on a ground glass viewer (focusing screen) after being reflected by a mirror or after passing through a prism or semitransparent glass; in one type (single lens reflex camera), light passes through the same… …   Universalium