Canon EOS 90D DSLR Camera with 18-135mm Lens - Manual (Page 565)

565
Custom Function Setting Items
C.Fn II-10: Orientation linked AF point

0: Same for both vertic./horiz.
The same AF area selection mode or manually selected AF points (or AF
points or Zone AF frames in the same position) are used for both vertical
shooting and horizontal shooting.

1: Separate AF pts:
G
+
S
(
S
in LV)
The AF area selection mode and AF point or zone AF frame can be set
separately for each camera orientation (1. Horizontal, 2. Vertical with the
camera grip at the top, 3. Vertical with the camera grip at the bottom).
When you manually select the AF area selection mode and AF point (or
zone) for each of the three camera orientations, they will be registered for
the respective orientation. Whenever you change the camera orientation
during shooting, the camera will switch to the AF area selection mode
and manually-selected AF point or zone AF frame set for that orientation.

2: Separate AF pts:
S
only
Separate AF point or Zone AF frame positions can be assigned for
each camera orientation (1. Horizontal, 2. Vertical with the camera grip
above, 3. Vertical with the camera grip below). Useful when switching to
AF points or Zone AF frames in other positions automatically based on
camera orientation.
AF points or Zone AF frames assigned to each of the three camera
orientations are retained.
o If [
8
: Clear all Custom Func. (C.Fn)] is selected ( = 581), the settings for
the 1., 2., and 3. orientations will be cleared.
o Setting may be cleared if a lens not used at the time of setup is attached.