through-the-lens reflex

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• Through-the-lens metering — Through the lens (TTL) metering is a photographic term describing a feature of cameras capable of measuring light levels in a scene through their lens. This information can then be used to select a proper exposure, and/or control the amount of… …   Wikipedia

• Through the lens — Mesure TTL de l exposition Pour les articles homonymes, voir TTL …   Wikipédia en Français

• History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… …   Wikipedia

• Single-lens reflex camera — The single lens reflex (SLR) camera uses an automatic moving mirror system which permits the photographer to see exactly what will be captured by the film or digital imaging system, as opposed to non SLR cameras where the view through the… …   Wikipedia

• Digital single-lens reflex camera — Nikon D700 full frame (FX) digital SLR camera …   Wikipedia

• Twin-lens reflex camera — A twin lens reflex camera (TLR) is a type of camera with two objective lenses of the same focal length. One of the lenses is the photographic objective (the lens that takes the picture), while the other is used for the waist level viewfinder… …   Wikipedia

• 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

• 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

• Psychology (The separation of) from philosophy — The separation of psychology from philosophy Studies in the sciences of mind 1815–1879 Edward S.Reed THE IMPOSSIBLE SCIENCE Traditional metaphysics The consensus of European opinion during and immediately after the Napoleonic era was that… …   History of philosophy

• Reflex — A reaction that is involuntary. The corneal reflex is the blink that occurs with irritation of the eye. The nasal reflex is a sneeze. * * * 1. An involuntary reaction in response to a stimulus applied to the periphery and transmitted to the… …   Medical dictionary

• History of the camera — The first permanent photograph was made in 1826 or 1827 by Joseph Nicéphore Niépce using a sliding wooden box camera made by Charles and Vincent Chevalier in Paris. Niépce built on a discovery by Johann Heinrich Schultz (1724): a silver and chalk …   Wikipedia