Getting Good Results With Autofocus - Nikon D70s Manual

Getting Good Results with Autofocus

Autofocus does not perform well under the conditions listed below. If the
camera is unable to focus using autofocus, use manual focus ( 74) or use
focus lock ( 70) to focus on another subject at the same distance and then
recompose the photograph.
Continuous Use of the AF-Assist Illuminator ( 72)
After the AF-assist illuminator has been used for several consecutive shots, it may turn
off briefl y to protect the lamp. The illuminator can be used again after a short pause.
Note that the illuminator may become hot with continuous use.
73