Flash photography with the a-1, Ae flash photography – Canon A-1 User Manual
Page 148
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FLASH PHOTOGRAPHY WITH THE
A-1
AE Flash Photography
There are four special automatic flash units,
the Canon Speedlites 199A, 177A, 155A
and 133A which make AE flash photo
graphy possible with the A-1. Just slip the
SpeecUite into the accessory shoe, switch it
on, focus and shoot. It does not matter
whether the AE mode selector is set to Av or
Tv. Except for "B”, whatever the shutter
speed set, as soon as the pilot lamp of the
Spcedlite comes on, the A-1 switches to the
X
synchronization
speed
of
1/60
sec,—
automatically. The camera’s microcomputer
controls
the
light
output
for
perfect
automatic
exposure
within
auto
working
ranges. And just as automatically will the
camera switch back to the shutter speed
actually set on the dial as soon as the pilot
lamps goes out. The viewfinder offers you
full
information
needed
for
flash
photography.
Moreover,
when
the
main
switch of the Speedlite is turned off, the
flash circuitry is completely cut off and the
A-I switches over to function as an AE
control camera with the Speedlite mounted
on it.
Of course, with the flash still on Auto
you can set the aperture manually should
you wish to use an FL lens. Even then,
however,
the
camera
will
automatically