D850
Focus Mode (Viewfinder Photography)
Focus can be adjusted automatically or manually. The user can also select the focus
point for automatic or manual focus or use focus lock to focus and recompose photographs
after focusing.
Autofocus
Choose from the following autofocus modes:
AF-S
(Single-servo AF)
For stationary subjects. Focus locks when shutterrelease
button is pressed halfway. At default settings, shutter can only be released when
in-focus indicator (
) is displayed.
AF-C (Continuous-servo AF)
For
moving subjects. Camera focuses continuously while shutter-release button is pressed
halfway; if subject moves, camera will engage predictive focus tracking to predict
final distance to subject and adjust focus as necessary. At default settings, shutter
can be released whether or not subject is in focus.
Manual Focus
Manual focus is available
for lenses that do not support autofocus (non-AF NIKKOR lenses) or when the autofocus
does not produce the desired results.
Procedure
Autofocus
To use autofocus, rotate the focus-mode selector to AF.
Choosing a Focus Mode
Autofocus mode can be selected by pressing the AF-mode button and rotating the main command dial until the desired setting is displayed in the viewfinder and control panel.
Manual Focus
AF lenses: Set the lens
focus mode switch (if present) and camera focus-mode selector to M.
Manual focus lenses: Focus manually.
To focus manually, adjust the lens focus ring until the image displayed on the clear matte field in the viewfinder is in focus. Photographs can be taken at any time, even when the image is not in focus.