Internal Flash Basics; To Set Ttl On The Internal Flash - Nikon D300 Complete Manual

Internal Flash Basics

I've covered some of the internal flash use already, but to be
consistent with the Nikon Flash Guide and to elaborate on
some of the deeper features of the internal flash unit, I'm
going to provide a step-by-step section, just as I do with the
common external flashes in the next section.

To Set TTL on the Internal Flash

1. Activate the flash by popping it up (press the Flash Release
button).
2. If you haven't already done so, use Custom Setting #E3
(Flash Mode for Internal Flash, see page <563>) to set
TTL.
3. Select the type of TTL to be performed. Basically, you
only have one choice: whether to cancel the Balanced
Fill-Flash mode (you do so by setting spot metering). I
generally recommend that you not use Balanced Fill Flash
(also known as TTL BL).
4. Set the camera to Single Servo AF; flash only operates
when the camera achieves focus; this step isn't technically
required, but I like to tell people to use it as a reminder
that focus has to be achieved for flash to operate.
5. Set the camera's exposure mode, if you haven't already. In
Aperture-priority (A), Shutter-priority (S), and Manual (M)
exposure modes, make any necessary aperture or shutter
speed selections.
Note: In Program exposure mode you can usually override the
camera's selection of aperture and shutter speed
combinations by turning the camera's Rear Command dial
(when the camera is active). But note that the maximum
aperture you can use is restricted in Program exposure
mode (the actual value depends upon ISO setting; see
"Allowable Apertures in Program Mode" on page <598>).
6. You're ready to shoot.
Thom Hogan's Complete Guide to the Nikon D300
V1.02
Page 621