Vignette Control; Diffraction Compensation - Nikon Z fc N2016 Reference Manual

Option
Noise reduction is performed only as required. The amount of
[Off] noise reduction performed is always lower than when [Low] is
selected.

Vignette control

Vignette control reduces "vignetting"—a drop in brightness at the
edges of a photograph—by an amount that varies from lens to lens. Its
effects are most noticeable at maximum aperture.
Option
e [High]
g [Normal]
f [Low]
[Off]
Vignette control
D
Depending on the scene, shooting conditions, and type of lens, JPEG images
may exhibit "noise" (fog) or over-processing at the edge of the frame that
introduces variations in peripheral brightness. In addition, 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 monitor.

Diffraction compensation

Select [On] to reduce diffraction at small apertures (high f/-numbers).
C The photo shooting menu: Shooting options
Choose the amount of vignette control performed from (in
order from high to low) [High], [Normal], and [Low].
Vignette control disabled.
Description
G button U C photo shooting menu
Description
G button U C photo shooting menu
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