viewfinder

(-fīn′dər)

noun

a camera device, as a special lens or small video screen, that shows the camera user images of objects or actions exactly as they will appear in the photograph, on the TV screen, etc.

See viewfinder in American Heritage Dictionary 4

noun
A device on a camera that indicates, either optically or electronically, what will appear in the field of view of the lens.

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viewfinder

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