| You can use your Nikonos SB103 TTL strobe
in combination with virtually any TTL-capable underwater strobe
for dual TTL-strobe photography. If you want the TTL circuitry
to determine your exposure, you have several alternatives.
Two compatible strobes offered by the same manufacturer with
a dual TTL strobe synch chord made by that manufacturer could
be used. You could use your SB103 with and SB102, SB104 or
another SB103 with a double Nikonos sync cord. Any combination
of two of several Ikelite strobe models with their dual TTL
cord will also allow two-strobe TTL lighting. If you want
to use two strobes made by different manufacturers, your TTL
function would be supported if the units were joined by a
"T" connector such as Ikelite’s or the Sea
& Sea dual-strobe connector. Use of one of these adapters
introduces two extra cord connections into the system and
thus provides two more doors for Mr. Murphy to jimmy open.
As a third alternative, you could purchase any Ikelite strobe
along with their new TTL Slave Module and have a cordless
slave unit with full TTL function as your second strobe. Your
slave strobe could be more powerful, less powerful, or of
equal power since it generally makes no difference whether
the main light is connected to the camera and fires the fill
light or if the fill light fires the mainlight. Finally, you
might like to get fancy and have a custom cord made that will
fire two different strobes.
Use of any of these alternatives will allow you to have
dual-strobe, TTL-controlled photography. If you use two strobes
of equal power, one on each side of the camera at equal distances
from the subject, you will eliminate most shadows. You also
have the option of using a second strobe of greater or lesser
power, diffuse on of your strobe lights, or vary the relative
distances of the two lights from the subject to achieve a
lighting ratio that will change the character of your shadows—but
that’s another question.
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