Canon EOS 90D Advanced User's Manual page 39

(2) Creative Zone
These modes give you more control for shooting various subjects as
desired.
Program AE ( = 110)
d
s Shutter-priority AE ( = 112)
f Aperture-priority AE ( = 114)
a Manual exposure ( = 117)
Bulb ( = 119)
F
(3) Custom shooting modes
You can assign < d >, < s >, < f >, < a >, < F >, AF operation, menu
functions, and more to < w >, or < x > ( = 546).
(2)
(3)
Part Names
39