Nikon SB-140 Buku Petunjuk - Halaman 27
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Halaman Cetak
UV flash photography
Turn
the exposure calculator
dial
so
the AUTO/MFULL
index
is opposite
UV
for full output
,
or the
M1/4
index is
opposite
UV
for
11
4
output.
Read the
f-number which appears
directly
above
the
dis-
tance
scale.
To
assure correct exposurE!
,
it
is
recommended
that
you
take
additional
shots
with
the
lens
opened
up or
stopped
down by one
flstop.
Note that
the
exposure
calcu lator
dial of the S8-140 is
designed
for
use
with
Kodak Spectroscopic
Type 103
-0
film as the
standard.
With other
films
,
the
dial
should
only
be used
as
a
guide.
Guide number
m(rl)
"' "
Shooting condition
Visible-
UV"
Infrared'"
Shooting
mode
selector" "
light
'
FULL
32( 105)
16(52)
22
(72)
1/4
16(52)
8(26)
11 (36)
'At ISO 100
"With Kodak Spectroscopic
T
ype 103-0 film
;
see page 31 for
details.
" . With Kodak
High-Speed
Infrared Film
2481
see page 31 for details.
Without
referring
to
the exposure
calculator
dial
,
you can
also
determine the f/stop by using the following
equation:
guide
number
f/stop
=
-
- - = - -
--
- - -
flash-to-subject distance
For
example,
to
get
the
proper aperture
for
visible-light
photography
when
using
ISO
100 fi lm
and
a
subject
8m
away,
divide
32 (guide
number)
by 8 to
get f/4
.
To
calculate
the correct
guide number for other ISO fi
lm
speeds
,
use
th
e
following equation:
guide number for
·d
b
.
gUI
e
num er
other ISO film
=
for ISO 100
x
speed
desired ISO
film
speed
100
Infrared photography
Turn
the
exposure
calcu lator dial so
the
AUTO /MFULL
index is
opposite IR
for full
output,
or the
M1
/4
index
is
opposite
IR
for 1/4 output.
Read
the
f-number
which
appears
directly
above the
dis-
tan
ce scale.
To
assure
correct
exposure,
it is
recommended
that
you
take
additional
shots
with
the
lens opened up or
stopped
down by one
f
Istop.
Note
that the exposure
calculator
dial of the S8-140
is
designed
for
use
with
Kodak
High-Speed
Infrared
Film
2481
as
the
standard.
With other films
,
th
e
dial
should
only
be
used
as a
guide.
27