Canon manufactured several models from the 1930s until the 1960s models from 1946 onwards were more or less compatible with the Leica thread mount. The Nikon rangefinder cameras were "discovered" in 1950 by Life magazine photographer David Douglas Duncan, who covered the Korean War. More modern designs have rangefinders coupled to the focusing mechanism so that the lens is focused correctly when the rangefinder images fuse compare with the focusing screen in non- autofocus SLRs.Īlmost all digital cameras, and most later film cameras, measure distance using electroacoustic or electronic means and focus automatically ( autofocus) however, it is not customary to speak of this functionality as a rangefinder.
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Earlier cameras of this type had separate viewfinder and rangefinder windows later the rangefinder was incorporated into the viewfinder. Older, non-coupled rangefinder cameras display the focusing distance and require the photographer to transfer the value to the lens focus ring cameras without built-in rangefinders could have an external rangefinder fitted into the accessory shoe. Most varieties of rangefinder show two images of the same subject, one of which moves when a calibrated wheel is turned when the two images coincide and fuse into one, the distance can be read off the wheel. A Foca camera of 1947 at the Musée des Arts et Métiers in Paris.Ī rangefinder camera is a camera fitted with a rangefinder, typically a split-image rangefinder: a range-finding focusing mechanism allowing the photographer to measure the subject distance and take photographs that are in sharp focus.
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