Provides 2X magnification of the central portion of the finder image. Eyesight adjustment provided. Useful for critical focusing in close-up work. (DK-18 required for Cameras with a 22mm round high eye-point viewing eyepiece thread, including: F3HP (with DE-3 High Eyepoint Finder) & F3T, F4, F5, F6, F100, N90, N90s, N8008, N8008s.
D1, D3000, D300S, D3100, D3X, D700, D7000, D90
|dioptric correction||from -5 to +1.|