E3: Exposure Comp. For Flash; E4: Auto C Iso Sensitivity Control - Nikon Z fc N2016 Reference Manual

Regardless of the setting chosen for Custom Setting e2 [Flash shutter
speed], shutter speeds can be as slow as 30 s in modes S and M or at
flash settings of slow sync, slow rear-curtain sync, or red-eye reduction
with slow sync.

e3: Exposure comp. for flash

Choose how the camera adjusts flash level when exposure
compensation is used.
Option
Y E [Entire frame]
[Background only]
E

e4: Auto c ISO sensitivity control

Choose what the camera targets for exposure adjustment when auto
ISO sensitivity control is enabled during flash photography.
Option
[Subject and
e
background]
f [Subject only]
A Custom Settings: Fine-tuning camera settings
G button U A Custom Settings menu
The camera adjusts both the flash level and
exposure. This changes the exposure for the
entire frame.
Exposure compensation is adjusted for the
background only.
G button U A Custom Settings menu
The camera takes both the main subject and
background lighting into account when adjusting
ISO sensitivity.
ISO sensitivity is adjusted only to ensure that the
main subject is correctly exposed.
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Description
Description