- ページ 18
カメラアクセサリー Nikon SB-102 osのPDF 取扱説明書をオンラインで閲覧またはダウンロードできます。Nikon SB-102 os 36 ページ。 Speedlight
CONTROLS IN DETAIL-continued
_ _ _ _
Joint
@
The joint connects the arm to the speedlight and allows
the flash head to be positioned as required for various
shooting
situations.
The arm can be inserted from either side of the
joint,
the normal position is shown in the
photo.
When using
two SB-102 Speedlights and the optional Double Flash
Bracket,
insert the arm that is next to the camera's film
advance
lever
into the joint from the direction opposite
that
shown
in the photo. (Flash head positioning
scales
are provided on both
sides
of the joint.)
The joint lever allows the flash head to be turned on the
arm 's axis and moved up or down the arm as required
.
The joint knob is used to adjust the angle of the flash
head (the angle of intersection between the
speedlight's
axis and the
lens
's optical
axis):
The normal angle of the
flash head is with the flash head positioning
index @
at
the
"normal"
positioning mark
@
ontheflash head
posi-
Close-Up Shooting in the Non-TTL
Automatic Mode
When
using the
SB-102
in the non-TTL automatic mode
for close-up shooting within approximately 1 m (3.3ft) to
0.3m (1 ft), the flash head should be pointed directly
at
the
subject.
Exposure compensation will be
necessary,
though
,
to prevent the subject from being overexposed
.
As
a rule of thumb, choose an aperture 1/2
to
1
step
smaller (numerically larger f-numbers) than indicated
by the exposure calculation dial. Of
course,
the exact
amount of exposure compensation depends upon the
shooting situation, so additional compensation may be
required.
To determine
the exact amount of exposure compensa-
tion required before going to the actual
shooting
loca-
tion, test-shoot in a
location
with conditions similar to
those of the actual situation (similar water
quality,
sur-
roundings, subjects,
and so on). If the
conditions
change,
the amount of the exposure
compensation
will
need to be changed
correspondingly.
Naturally,
data
calculated on land will not be applicable to underwater
photog
raphy.
18
To detach
tioning
scale.
The
"normal
"
position
is
used for
shooting
between 1 m
(3.3ft)
and
infinity.
For close-up
shooting
within approximately 1 m
(3 .3ft),
loosen the joint
knob,
point the flash head toward the subject
,
then
tighten the
joint knob. In addition to the
"normal"
position mark on
the flash head positioning
scale
,
"0.6m (2ft)
"
and
"
0.3m
(1ft)" position marks
®
®
are provided for use when
shooting subjects at these
distances. However,
when
the flash head is not in the
"normal
"
position
,
the joint
must be attached to the top of the
arm.
For information about using the target-light to position
the flash head, see page 29.
To
detach
the jOint from the
speedlight
,
turn
the joint
knob counterclockwise
and
slide
the jOint plate out of
the joint
collar
while pulling the joint knob.