Electronic viewfinder
Viewfinders of varying degrees of sophistication have been used on cameras for many years. Most digital cameras and video cameras today have viewfinders to allow the user to view a representation of the image to be recorded. More complex cameras may include mechanical or electronic masking arrangements for changing the field of view to show different aspect ratios to be used for images captured. Electrically actuated analog and digital displays have been provided at edges of the field of view to indicate conditions such as light level, flash readiness, and lens setting. Typically in digital cameras, the viewing of the scene that will be captured is accomplished with either an optical viewfinder or a liquid crystal display (LCD) unit either alone or in combination with an optical viewfinder. A light emitting device with a fixed intensity, is placed near the viewfinder eyepiece in order to provide the user of the camera with an indication of the status of the camera.
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