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FLASHPHOTOGRAPHY---------------------
The Nikon F3AF has been
specially
designed to make electronic
flash photography
easier
than ever. When used with an
acces-
sory
Nikon dedicated flash
unit,
the camera offers fully auto-
matic through-the -Iens
(TTL)
control of the flash
exposure.
This
means that while the
shutter is
open,
the camera 's silicon
photodiode
(SPD) reads
the light
reflected
directly off the film
and
tells the flash unit to cut
itself
off when the
exposure
is
correct.
To prevent
mistakes,
the camera also offers automatic
switch-
over of the
shutter speed
for proper
synchronization
.
With
the
shutter
speed
dial
@
set
at A or 1/125
sec.
or
above,
the
shutter
speed
is automatically
switched
to 1/80 sec
.
as
soon
as the
flash
is turned on
.
As
a
reminder,
the LCD
shows
80 on
auto
or
M 80 on manual. For
creative
fill -in flash
effects,
you can
set
the
speed
manually to 1/60
sec.
or below and the shutter fires at the
speed
set
with the
speed
in use displayed
in
the viewfinder.
For
non-dedicated flash units, an X
setting
is
provided,
giving
you the proper manual
speed
of 1/80
sec
.
At
X,
M+ 80 appears
in the
LCD.
However, if you use a Nikon dedicated flash unit at
this setting
,
M 80 appears as
soon
as the unit is turned
on.
When
shooting
manually with any flash unit, it is necessary to
determine the flash unit's guide number for the film you are
using
;
then set the aperture to match the shooting
distance.
48
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