Nikon D7200 Mode D'Emploi

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64 Menu Guide
This option controls how autofocus adjusts to sudden large 
changes in the distance to the subject when AF-C is selected or 
continuous-servo autofocus is selected when the camera is in 
AF-A
 mode for viewfinder photography.
a3: Focus Tracking with Lock-On
G button
➜ A Custom Settings menu
Option
Description
C
5 (Long)
When the distance to the subject changes abruptly, 
the camera waits for the specified period before 
adjusting the distance to the subject. This prevents 
the camera from refocusing when the subject is 
briefly obscured by objects passing through the 
frame. Note that 21 (Short), and Off are equivalent 
to 3 (Normal) when 3D-tracking or auto-area AF is 
selected for AF-area mode.
(
4
D
3 (Normal)
)
2
E
1 (Short)
Off
The camera immediately adjusts focus when the 
distance to the subject changes. Use when 
photographing a series of subjects at varying 
distances in quick succession.