Canon 155 A - Manual (Page 35)

consideration the auto working range,
(see pp. 13-14).
3. Manually set the flash-selected aperture,
or a different one if correcting exposure,
on the lens aperture ring.
Viewfinder Displays and Warnings
The A-l’s digital display will include the same
information as in AE Flash (p. 16) with the
addition of the “M” signal for manual
aperture control. When using an FD lens,
exposure warnings will be the same as those
for AE Flash. If using an FL lens, the lens’
lack of a full aperture signal pin may cause
the aperture display and exposure warnings
to be unreliable. In this case, it is advisable
to switch off the viewfinder display lever.
Viewfinder information in the AE-1 is the
same as that for AE Flash (see p. 18) with
the addition of the flashing “M” LED to
indicate manual aperture control.
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