Editing Camera (section)

=== Rangefinder camera ===
{{Main|Rangefinder camera}}

[[File:Leica IIIa Rangefinder.jpg|thumb|left|Rangefinder camera, [[Leica camera|Leica]] c. 1936]]

As camera lens technology developed and wide aperture lenses became more common, [[rangefinder camera]]s were introduced to make focusing more precise. Early rangefinders had two separate viewfinder windows, one of which is linked to the focusing mechanisms and moved right or left as the focusing ring is turned. The two separate images are brought together on a ground glass viewing screen. When vertical lines in the object being photographed meet exactly in the combined image, the object is in focus. A normal composition viewfinder is also provided. Later the viewfinder and rangefinder were combined. Many rangefinder cameras had [[interchangeable lens]]es, each lens requiring its range- and viewfinder linkages.

Rangefinder cameras were produced in [[Half-frame|half-]] and full-frame 35&nbsp;mm and roll film (medium format).
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