Canon AE-1 User Manual

Page 107

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aperture ring manually. When you are using a

Canon FL lens which does not allow full

aperture metering, automatic flash photo

graphy can be performed by setting the

prescribed f/stop on the lens manually. In
both cases, the shutter speed is automatically

adjusted to the X synchronization speed of

1/60 sec.

As the Speedlite 155A uses a unique

averaged light sensing system which keeps

down the distribution of the reflected light
from the center, the influence of the back
ground is greatly reduced. Thus, the 155A