Reference Manual

197C The Shooting Menu: Shooting Options
Select On to reduce noise (bright spots,
randomly-spaced bright pixels, or fog).
Noise reduction takes effect at all ISO
sensitivities, but is most noticeable at higher values. The time
required for processing at shutter speeds slower than about 1 s
roughly doubles; during processing, “l m” will flash in the
viewfinder and photographs cannot be taken. Noise reduction
will not be performed if the camera is turned off before
processing is complete.
If Off is selected, noise reduction will only be performed as
required; the amount of noise reduction is less than that
performed when On is selected.
“Vignetting” is a drop in brightness at the edges of a
photograph. Vignette control reduces vignetting for type E and
G lenses (0 267). Its effects vary from lens to lens and are most
noticeable at maximum aperture. Choose from High, Normal,
Low, and Off.
Noise Reduction
G button ➜ C shooting menu
Vignette Control
G button ➜ C shooting menu
A Vignette Control
Depending on the scene, shooting conditions, and type of lens, JPEG
images may exhibit noise (fog) or variations in peripheral brightness,
while 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 monitor. Vignette control does not apply to movies
(0 127) or to pictures taken with lenses that support FX format.