Nikon D90 User Manual page 207

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f1alh cotrl for built10 flalh
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Ou1pu1
T,mel F,eQuency
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1/128
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II Manual
Choose a flash level between Full and 1/128
(1/128
of full power). At full power, the
built-in flash has a Guide Number of 18/59 (m/ft., ISO 200, 20°C/68 OF).
II Repeating Flash
The flash fires repeatedly while the shutter is open, producing a
strobe-light effect. Press
<lIIII
or
~
to highlight the following
options, ... or
T
to change.
Option
······1 . .
·_.M .. _.M..
Description·················· . . · · _... ..
Output
Chooseflash'outp'u"t"{e'xpress-edas-a fraction-oHuirp-owe'rf-
_M .. _ _......_. ._
1
c
hoosethe"n"umber'oftime'sMthe-fiash"ilres"a"t'th"e"s'eTeciedouTput.·Note-ihat-. . . . . . ··
Times
I
depending on shutter speed and the option selected for
Frequency,
the actual
i number offlashes may be less than selected.
Frequencytcho:?~~~?~oh~niheff~~h(iresper
. . s e c o n d . : . . . ...
, . JJTimes"
The options available for
Times
are determined by flash
output.
::::~:~~~:~:I:~:~~i~~:~::~~~.ila;I~:t.~:~:!i:~:f!.~:
I
..........".." " "7 .
1/8 : 2-5
1/1'6'
r '
2-10
:~:~:~7~~~=L~::::.~:~:~~~
. .
? ;,~~
. .
~
. .
:==::=.~.:.=:
1/64 2-10,15,20,25
. ~
••,. _ _ .•
~ . _
••_ . ._ . . . . •
~
.. ,,__ ._. .__. ."
~
" ' .. -. ._. . ·- _·· _...w_..
· " n · ~
·""'..,···
1/128 2-10, 15,20,25,30,35
187