Definition of "teleconverter" [teleconverter]

• A secondary lens mounted between the camera and a photographic lens so as to enlarge the central part of an image obtained by the objective lens. (noun)

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• "Like Fujifilm's FinePix Real 3D W1, the HDC-SDT750 camcorder uses two lenses to create stereoscopic images and video — in this case, a detachable 3D "teleconverter" lens that fits over a 12x optical zoom lens."
• "Like Fujifilm's FinePix Real 3D W1, the HDC-SDT750 camcorder uses two lenses to create stereoscopic images and video—in this case, a detachable 3D "teleconverter" lens that fits over a 12x optical zoom lens."
• "A friend recently asked me if buying a teleconverter for his SLR lenses to shoot close-ups would affect the aperture and shutter settings on these lenses."