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'I
When the 58·21
is
powered from the external power source
\
LA·2 or LD·2:
I
I
I
I
I
I
I
I
I
I
I
I
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I
I
For 1/4
and
1/16
light
output,
the
usable
aperture
is the
same as
for
the S8-21 powered by the
internal
battery.
For
fu
ll
light
output,
use
an
aperture
approx.
112 stop
smaller.
Th
e
usable aperture
is
that indi-
cated
by the
narrow
line-end
of
the
aperture indicator line.
Follow the
white or
red line
until it intersects
the narrow
far-left
end of the aper-
ture indicator,
then read the
flstop
indicated.
For
example,
with ISO
100 film
and
Micro-Nikkor
55mm
f/2
.S lens in
normal
position,
use f/22
to
obtain
a
1
:
10
reproduction ratio.
I
With the Condenser Adapter 5W·8 attached
I
Reset lens to
an aperture
1/2
stop
smaller.
\
1
~----------------------~
5
Set controller's power/
• mode switch to M to turn
on the 58·21.
With the Nikon
F4-series,
F-801
1
NSOOS,
FA
,
FE2
,
F-501
/N2020,
F-401s/N4004s,
F-301/N2000,
FG
,
FG
-20
,
or
FE
,
first,
turn on the
camera meter by lightly pressing
the
shutter release button to activate the
viewfinder
ready-light.
6
Confirm the viewfinder
• ready·light lights up, then
fully depress shutter release
button to take the picture.
To
ensure a correctly exposed pic-
ture,
it is
recommended that
you
take additional shots with
the
lens
aperture opened or stopped down
by
one
f/stop.
4.
Set the light output
selector on the 58·21 to
the desired position.
7
Set the power/mode
•
switch to OFF.
39
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