Wireless Flash - Nikon D300 Complete Manual

6. Set your shutter speed to the one you used in
calculating the repeating flash effect (Step 1).
7. Set your aperture based upon calculating
Distance
the Manual flash section, above. You know the
distance from Step 4. If the aperture you calculate
here can't be obtained, you'll need to go back and
reset the manual flash power (Step 1d). If you can set
the calculated aperture on your lens, do so and you're
ready to shoot.

Wireless Flash

The big trick in the D300 internal flash arsenal is its ability to
completely control a multiple wireless flash setup.
Specifically, the D300's internal flash is a "Commander" and
the other external flashes are "Remotes."
The way this works is that the Commander (internal flash)
sends queries and instructions to the Remotes (external
flashes) by using special preflash sequences. Only
i-TTL capable flashes can be used for wireless work, which
means SB-600, SB-800, or SB-R200 flashes must be used for
Remotes.
For the wireless flash system to work, the remote flash units
need to be able to see the light output of the D300's internal
flash, and the D300 needs to be able to see the light output of
the remote flashes.
You're probably wondering about these preflash queries and
instructions. Let's say I have the full set of two Remotes in
addition to my D300 internal flash (Commander). The
preflash sequence that occurs when you press the shutter
release now looks something like this:
Commander:
Remote Groups:
[Camera calculates exposure]
Commander:
Commander:
[Camera mirror moves up, shutter opens]
Thom Hogan's Complete Guide to the Nikon D300
. Determine the GN by looking at the tables in
Remote Groups fire a preflash
Preflash fires (Commander also fires, if active)
Remote Group A should fire at Level X
Remote Group B should fire at Level Y
V1.02
Aperture = GN /
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