Stop-down exposure measurement Full-aperture
exposure
measurement
is
not
possi-
ble with
the
following lenses and accessories.
either
because
the
lenses nave no
auto
diaphragms
or
because
the
diaphragms will
not
couple
with
the
meter.
Therefore,
the
stop
-down
method
of
measuring
exposure
with
the
lens
aperture
dia-
phr
agm manually
stopped
down
to
the
taking
a
perture
must
be user!.
First
, push
the
coupling pin
as far
to
the
right as it will go.
Mount
a lens
or
lens/accessory
setup
to
the
camera and switch
on
the
meter
.
Auto
lenses
without
coupling
prong
With
automatic
exposure
control:
Use
the
depth-
of-fiekl preview
button
to
stop
down
the
lens and
turn
the
aperture
ring until
the
black needle
is
in
the
shutter-speed scale (Take
note
of
the
meter's
EV
range).
With manual override: Use
the
same
procedure
as
above.
Then
turn
the
shutter
-speed dial until
the
green needle
matches
the
black
one.
At
manual
setting, pressure
on
the
depth
-of-field preview
button
is
no
longer necessary since
the
correct
exposure
is
set mechanically.
Caution:
Never
advance
the
fi
lm
with
the
depth-of
-field
preview
button
in
the
depressed
position
.
Micro-Nikkor
SS
mm
f/3:S·
with
M2
ring
Use
the
same
procedures
as
the
auto
lenses
without
coupling
prong.
Preset
lenses (e.
g.
PC-Nikkor
28
mm)
Set
the
shutter-speed
dial
at
"A"
and
turn
the
aperture
ring
until
the
black
needle
swings
to
an
appropriate
shut-
ter
speed
.
Bellows
focusing
attachments,
extension
rings
and
focus-
ing
units
Using
the
same
procedure
as
that
for
lenses with
preset
diaphragms
.
Reflex-Nikkor
lenses
The
Reflex
-
Nikkor
500
mm
f18,
1000
mm
fIll
and
2000
mm
fIll
lenses have
no
aperture
diaphragm.
Set
the
shutter
-
speed
dial
at
"
A"
and
the
black
needle
gives
the
shutter
speed_
43