A3: Focus Tracking With Lock-On; A4: Af Activation - Nikon D800E User Manual

a3: Focus Tracking with Lock-On

This option controls how autofocus adjusts to sudden large
changes in the distance to the subject when AF-C (0 91) is selected
during viewfinder photography.
Option
C 5 (Long)
When the distance to the subject changes abruptly, the
( 4
camera waits for the specified period before adjusting
D 3 (Normal)
the distance to the subject. This prevents the camera
from refocusing when the subject is briefly obscured by
) 2
objects passing through the frame.
E 1 (Short)
The camera immediately adjusts focus when the
distance to the subject changes. Use when
Off
photographing a series of subjects at varying distances
in quick succession.

a4: AF Activation

If Shutter/AF-ON is selected, both the
shutter-release button and the B button
can be used to initiate autofocus. If AF-ON
only is selected, autofocus is only initiated
when the B button is pressed.
G button A Custom Settings menu
Description
G button A Custom Settings menu
U
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