Reference Manual

188 Menu Guide > C The Photo Shooting Menu
Vignette control reduces the drop in brightness that occurs at
the edges of the frame. Its effects vary from lens to lens and are
most noticeable at maximum aperture. Choose from High,
Normal, Low, and Off.
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 the Auto
distortion control option will be grayed out and unavailable).
Vignette Control
G button ➜ C (photo shooting menu)
D Vignette Control
Depending on the scene, shooting conditions, and type of lens, TIFF
and JPEG images may exhibit noise (fog) or variations in peripheral
brightness, while custom Picture Controls and preset Picture Controls
that have been modified from default settings may not produce the
desired effect. Take test shots and view the results in the display.
Diffraction Compensation
G button ➜ C (photo shooting menu)
Auto Distortion Control
G button ➜ C (photo shooting menu)