This form of LIDAR uses the elapsed time between the initial pulse, and ti's return to calculate the distance to the target object.
A device included on many direct vision cameras as an aid in focusing. It assesses subject distance (usually by comparing two images), and displays this information in the viewfinder. This device may be linked directly to the lens focus control, to give a coupled rangefinder (see Coupled rangefinder)
A camera equipped with a device that measures the distance from camera to subject for focusing.
An instrument for measuring the distance from the observer to a particular object, as for adjusting the focus of a camera. A rangefinder is included as an integral part of many cameras as a focusing aid.
A camera which has a lens for exposing the film and a viewfinder for composition and focus. Unlike reflex cameras, there is no mirror or viewing screen.
Instrument for measuring distances from a given point, usually based on slightly separated views of the scene provided by mirrors or prisms. May be built into non-reflex cameras. Single-lens reflexes may have prismatic rangefinders built into their focusing screens. The Leica and the Contax G2 still keep the flag up in this areas.
a measuring instrument (acoustic or optical or electronic) for finding the distance of an object
a device used to measure the distance to a target
a mechanism for setting manual focus by superimposing two images in an area of the viewfinder called a focusing patch
an instrument used to determine distance to an object
an optical device that allows distance to be estimated or measured using triangulation,
Optical instrument for measuring distances; may be coupled to the lens so that adjustment of the rangefinder automatically sets the lens to the correct distance.
In a strict sense, a rangefinder is a device to optically determine the distance to an object. In the photographic sense, a rangefinder is a camera type that uses some means to determine the the distance to an object (and thus provide accurate focusing). Current technology provides for several different types of systems that determine the distance.
The viewfinder on most cameras is a separate viewing device that is independent of the lens. Often mounted above and to the right or left of the lens. It exhibits a problem known as parallax when trying to frame subjects closer than five feet from the camera so it is advisable to use the colour LCD when shooting closeups for this very reason.
Device in some cameras used to measure the distance from the camera to the subject and that indicates when the subject is in focus.
A camera with a viewfinder separate from the lens. Not a SLR. Also, the usually built-in adjustable optical device for focusing a camera that automatically indicates the correct focus (as when two parts of a split image are brought together).
A camera design that has a viewfinder separate from the lens.
focusing system which measures the distance from camera to subject.
1.) A device on a camera that measures the distance from camera to subject and shows when the subject is in focus. 2.) A camera equipped with a rangefinder focusing device. Abbreviated RF.
A rangefinder is a device that measures distance from the observer to a target. Some devices use active methods to measure (such as sonar, laser, or radar); others, available since the nineteenth century, measure distance using trigonometry. They usually use a set of known distances or target sizes to make the measurement.