Reference Manual

288
C
The Photo Shooting Menu: Shooting Options
Select [On] to reduce diffraction at small apertures (high
f-numbers).
Select [On] as required to reduce barrel distortion when
shooting with wide-angle lenses and to reduce pin-cushion
distortion when shooting with long lenses. Note that [On] may
be selected automatically with some lenses, in which case this
item will be grayed out and unavailable.
Diffraction Compensation
G
button
U C
photo shooting menu
Auto Distortion Control
G
button
U C
photo shooting menu