A3: Focus Tracking With Lock-On; A4: Af Point Illumination; A5: Focus Point Wrap-Around - Nikon D7100 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 is selected or continuous-servo autofocus is selected when
the camera is in AF-A mode for viewfinder photography (0 71).
Option
C 5 (Long)
When the distance to the subject changes abruptly, the camera waits for the
( 4
specified period before adjusting the distance to the subject. This prevents
D 3 (Normal)
the camera from refocusing when the subject is briefly obscured by objects
) 2
passing through the frame.
E 1 (Short)
The camera immediately adjusts focus when the distance to the subject
changes. Use when photographing a series of subjects at varying distances in
Off
quick succession.

a4: AF Point Illumination

Choose whether the active focus point is highlighted in red in the viewfinder.
Option
The selected focus point is automatically highlighted as needed to establish
Auto
contrast with the background.
The selected focus point is always highlighted, regardless of the brightness of
On the background. Depending on the brightness of the background, the
selected focus point may be difficult to see.
Off The selected focus point is not highlighted.

a5: Focus Point Wrap-Around

Choose whether focus-point selection "wraps around" from one edge of the display
to another.
Option
Focus-point selection "wraps around" from top to
bottom, bottom to top, right to left, and left to right, so
that, for example, pressing 2 when a focus point at the
Wrap
right edge of the display is highlighted (q) selects the
corresponding focus point at the left edge of the
display (w).
The focus-point display is bounded by the outermost focus points so that, for
U example, pressing 2 when a focus point at the right edge of the display is
No wrap
selected has no effect.
232
G button A Custom Settings menu
Description
G button A Custom Settings menu
Description
G button A Custom Settings menu
Description
w
q