Canon 155 A User Manual
Page 3
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more appropriate exposure than do other
current flash units. An outstanding feature
particular to the 155A is the automatic
switching from the flash photography mode
over to the normal AE photography mode
when the flash is not charged providing the
AE exposure is within the AE coupling range.
In addition, the Speedlite 155A can be used
with the Power Winder A on the AE-1 or the
A-1 for sequential AE flash photography.