Nikon os Speedlight SB-102 - Manual (Page 18)

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
shoofing 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 fhe 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 @ on the flash head posi­
To detach
tioning scale. The “normal” position is used for shooting
between 1m (3.3ft) and infinity. For close-up shooting
within approximately 1m (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 “0.3 m
(1ft)” position marks®) ® are provided for use when
shooting subjects at these distances. Flowever, 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.
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 (1ft), 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
photography.
18