Nikon D300 User Manual page 96

e4: Modeling Flash
If [On] (the default setting) is selected when the camera is being
used with the built-in flash or an optional SB-900, SB-800, SB-600,
or SB-R200 flash unit, a modeling flash will be emitted when the
camera depth-of-field preview button is pressed (pg. 103). No
modeling flash is emitted if [Off] is selected.
e5: Auto Bracketing Set
Choose the setting or settings bracketed when auto bracketing
(pg. 116) is in effect. Choose [AE & flash] (AD;the default setting) to
perform both exposure and flash-level bracketing, [AE only] (AE)to
bracket only exposure, [Flash only] (i) to perform only flash-level
bracketing, or [WB bracketing] (WB) t o perform white-balance
bracketing (pg. 121). Note that white balance bracketing is not
available at image quality settings of NEF (RAW) or
NEF (RAW) + JPEG.
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