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An electronic viewfinder (EVF) is a camera viewfinder where the image captured by the lens is projected electronically onto a miniature display. The image on this display is used to assist in aiming the camera at the scene to be photographed.
It's a concept that wasn't exactly new to photographyârangefinder cameras like the Leica M (Typ 240), a digital camera based on a 35mm system that has had very few changes in design since the 1950s, offer fixed optical viewfinders and a mechanical mechanism for focusing based on the distance from your subject.