Canon MT-26EX-RT Macro Twin Lite - Manual (Page 83)

83
: Optical Transmission Wireless Multiple Flash Photography
Advanced Multiple Flash Photography with Slaves A, B,
and C Added
(p.92)
You can perform multiple flash shooting not only with slave C, but
also with slaves A and B added. Slave A is controlled to fire with
flash head A and slave B to fire with flash head B as a group (as a
single flash unit).
B
A
C
Shooting with firing group C pointed directly toward the main subject may
result in overexposure.
Before shooting, perform a test flash (p.27) and test shooting.
To avoid interfering with transmission, do not place any obstacles
between the master unit and slave unit.
Using the mini stand provided with the slave unit, position the slave unit
with its sensor facing the master unit.
When shooting indoors, since the transmission signal is reflected off the
walls, operation may be possible even with slightly imprecise positioning.