Nikon D70S - Manual (Page 80)

70
Taking Photographs—Focus
Focus Lock
Focus lock can be used to change the com po si tion after focusing, making it
possible to focus on a subject that will not be in one of the fi ve focus areas
in the fi nal composition. It can also be used when the autofocus system is
unable to focus (
73).
When AF-S is selected for Custom Setting 2 (Autofocus; 139), focus
locks automatically when the in-focus indicator (
●) appears in the viewfi nder.
When AF-C is selected, focus must be locked man u al ly using the AE-L/AF-L
button. To recompose a photograph using focus lock:
1 Position the subject in the selected focus area and press the shutter-re-
lease button halfway to ini tiate focus.
2 Check that the in-focus indicator (
●) appears in the viewfi nder.
AF-S (Single-servo AF)
Focus will lock automatically when the in-
fo cus indicator appears, and re
main locked
until you remove your fi nger from the shutter-
re lease button. Focus can also be locked by
pressing the AE-L/AF-L button (see below).
AF-C (Con tin u ous-servo AF)
Press the AE-L/AF-L button to lock both fo cus
and exposure. Focus will remain locked while
the AE-L/AF-L button is pressed, even if you
later remove your fi nger from the shutter-re-
lease button.