Nikon TC-14E II (1.4x) AF-S Teleconverter (Worldwide) for Nikon Digital SLR Cameras: F5, F100, N80, N75, N65, D3, D2, D700, D300, D200, D100, D90, D80, D70, D50, D40, D40x, and similar cameras, TC14E II, Product# 2129 The TC-14E II provides a 1.4x increase in the prime lens' effective focal length, with a 1 f/stop loss in effective aperture. This Nikon TC-14E II has CPU contacts to integrate to the camera's metering system, exposure mode, etc. AutoFocusing possible when used with D1, D1X, D2X, D1H, D100, D70, D2H, F6, F5, F100, N80/F80, N75, F75, and N65/F65 AF SLR Cameras. This is an original Nikon precision optical accessory, with integrated coating to reduce flare and ghosting. 5 elements in 5 groups assures highest picture quality; One Year Warranty via Ace Photo Digital.