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indicator
li
nes
Light output
indexes
See
38
.
Lens focal length
scales
Use
white
index for
lenses
in
normal
position, red index for lenses
in reverse position
.
ISO film
scale
Reproduction ratio scales
Use white
lines
for
lenses in normal position.
red lines for
lenses in
reverse
I
Lens selector
knob
Fi
lm
ring
Film
index
Aperture lreproduction ratio dial
BEFORE USING THE SB-21
•
Do not fire the flash close to anyone 's eyes.
•
The
58-21
is primarily designed
for stereoscopic
shooting.
It should
not be used for reproducing
docu-
ments
with a
glossy
surface.
•
With
the Nikon F-401
s/N4004s·,
the 58-21 cannot be
used
for TTL
auto flash
,
or
as a slave
unit
for
TTL
multiple flash
photography.
•
The
Nikon
N4004s
is
sold exclusively in
the U.S.A.
•
To
ensure
proper protection for the S8
-21,
be sure to leave
the
expanded polystyrene
in the
leatherette case.
USABLE LENSES
Most
lenses
with a 52mm or 62mm
filter
attachment
can be
used
with
the
58-21
.
Certain
lenses,
however,
require special
care.
With AF Nikkor
lenses,
focus
manually. AF
Micro-
Nikkor
60mm
f/2.8
and
AF Micro-Nikkor 105mm
f/2.8
can
be used for both
autofocus and
manual
focus
.
However,
when
the
58
-21
is
used with other AF Nikkor
lenses,
performing autofocus
may damage the
camera
.
AF
Zoom·Nikkor
lenses cannot
be
used with the
58·21.
As the focusing ring
on these
lenses is
so
light,
they will not remain in
the
focus
position
when
the
58-21 is attached.
With non·AF zoom
lenses:
a.
Focusing
a zoom
lens
with the
58-21
attached
causes the 58-21 main unit to rotate
.
If
necessa ry,
remove
the
58 -21
after focusing, then
reattach
it in
the desired
position.
Also ncte
that even slight
pres-
sure
on the 58-21 main unit may move the
lens
focusing
ring
resulting
in
an
out-of-focus
image.
b.
With
a zoom
lens,
always
perform TTL auto
flash
shooting.
In manual flash
shuoting, the
proper
aper-
ture
for the zoom
lens
cannot
be read
from the
58-21 's exposure calculator dial.
c.
Vignetting may occur in the following
cases:
•
When using Zoom Nikkor 35-70mm f/3.5, in normal
position
,
at
35mm
focal
length
for
shooting
a
sub-
ject located near
the closest
focusing
distance.
•
When using Zoom-Nikkor
35
-1
35
mm f/3
.5-f/4.5,
in
normal position
,
for
macro
focusing.
Lenses shorter than 35mm
cannot
be
used in nor·
mal
position. Vignetting
may occur
when
these
lenses
are
used
in
normal
position.
Use in reverse
position.
31
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