74 More on PhotographyThis section describes the focus options available whenphotographs are framed in the viewfinder. Focus can beadjusted automatically or manually (see “Choosing How theCamera Focuses: Focus Mode,” below). The user can also selectthe focus point for automatic or manual focus (0 80) or usefocus lock to focus to recompose photographs after focusing(0 81).Choosing How the Camera Focuses: Focus ModeChoose from the following focus modes. Note that AF-S and AF-Care available only in modes P, S, A, and M.Focus (Viewfinder Photography)Option DescriptionAF-A Auto-servo AFCamera automatically selects single-servoautofocus if subject is stationary, continuous-servo autofocus if subject is moving. Shuttercan only be released if camera is able to focus.AF-S Single-servo AFFor stationary subjects. Focus locks whenshutter-release button is pressed halfway.Shutter can only be released if camera is ableto focus.AF-C Continuous-servo AFFor moving subjects. Camera focusescontinuously while shutter-release button ispressed halfway. Shutter can only be releasedif camera is able to focus.MF Manual focus Focus manually (0 83).
