Nikon D3body D3 User's Manual - Page 73

Adjust Viewfinder Focus The camera is equipped with diopter adjustment to accommodate individual differences in vision. Check that the display in the viewfinder is in focus before shooting. 1 Lift the diopter adjustment knob. s Remove the lens cap, turn the camera on, and pull the diopter adjustment knob out (q). 2 Focus the viewfinder. Rotate the diopter adjustment knob (w) until the viewfinder display, and AF area brackets are in sharp focus. 3 Replace the diopter adjustment knob. Push the diopter adjustment knob back in (e). A Diopter Adjustment Viewfinder Lenses Corrective lenses (available separately; pg. 385) can be used to further adjust viewfinder diopter. Before attaching a diopter-adjustment viewfinder lens, remove the DK-17 viewfinder eyepiece by closing the viewfinder shutter to release the eyepiece lock (q) and then unscrewing the eyepiece as shown at right (w). 47