Nikon D4 - B: Metering;Exposure; B1: ISO Sensitivity Step Value; B2: EV Steps for Exposure Cntrl; B3: Exp.;Flash Comp. Step Value

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Select the increments used when making
adjustments to ISO sensitivity (0 117). If
possible, the current ISO sensitivity setting is
maintained when the step value is changed. If
the current ISO sensitivity setting is not
available at the new step value, ISO sensitivity
will be rounded to the nearest available setting.
Select the increments used when making
adjustments to shutter speed, aperture, and
bracketing.
Select the increments used when making
adjustments to exposure and flash
compensation.
b: Metering/Exposure
b1: ISO Sensitivity Step Value
G button ➜ A Custom Settings menu
b2: EV Steps for Exposure Cntrl
G button ➜ A Custom Settings menu
b3: Exp./Flash Comp. Step Value
G button ➜ A Custom Settings menu