Provides 2X magnification of the central portion of the finder image. Adjustments for Individual eyesight are possible. Useful for critical focusing in close-up work. Requires Eyepiece Adapter DK-7 (Calumet #NT7272) for use with the D2Xs and D2Hs. Requires rectangular Eyepiece Adapter (Calumet #NT7280) for use with the D200, D70s, and D50.