Nikon Z 6II Reference Manual page 153

A
Extended Shutter Speeds
For shutter speeds as slow as 900 s (15 minutes), select [On] for Custom
Setting d6 [Extended shutter speeds (M)].
A
Auto ISO Sensitivity Control (Mode M)
If auto ISO sensitivity control ( 0 120) is enabled, ISO sensitivity will
automatically be adjusted for optimal exposure at the selected shutter
speed and aperture.
A
Movie Mode Exposure Settings
The following movie shooting settings can be adjusted during filming:
Mode
P, S 1
A
M
1 Exposure control in shooting mode S is the same as in mode P.
2 The upper limit for ISO sensitivity can be selected using the [ISO
sensitivity settings] > [Maximum sensitivity] item in the movie
shooting menu.
3 If [On] is selected for [ISO sensitivity settings] > [Auto ISO control
(mode M)] in the movie shooting menu, the upper limit for ISO
sensitivity can be selected using [Maximum sensitivity].
Aperture
—
4
4
Speed ISO sensitivity
—
—
4
— 2
2
—
4
3
The Mode Dial
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