In continuous AF, the camera will continue to adjust focus when the shutter-release button is pressed partway down. Focus lock cannot be used.
With Direct Manual Focus (DMF), press the shutter-release button partway down to lock focus. When the manual focus indicator (MF) appears, the lens can be refocused manually. Available with D series lenses only. When using SSM series lenses, the DMF function incorporated in the lens should be used.
The film speed can be set manually from ISO 6 to ISO 6400 in 1/3 Ev steps.
Turn the function dial to the ISO position (1).
While pressing the function button (2), turn the control dial (3) until the appropriate ISO is displayed on the data panel. Release the function button to complete the operation.
The film speed can be set for DX-coded and non-DX-coded film. A custom ISO setting can be applied to film with the same DX code with custom function 4 (p. 67). The film speed of a loaded roll of film can be confirmed through the film window in the back cover of the camera.