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The digital readout will be the same as in
AE flash control but will also include the
“M” signal for manual aperture control.
Though the set flash auto working aperture
value is displayed in the readout, it is not
automatically set as in AE flash control.
The same aperture value as set on the flash
must be manually set on the lens aperture
ring. As in AE flash control, the shutter
speed is automatically set at 1/60 sec. as
long as the AT dial is not at “B”.
When using an FD lens, exposure warnings
are the same as those for AE flash control.
Since FL lenses lack a full aperture signal pin,
you cannot always rely on the digital read-
out of apertures and exposure warnings. It
is, therefore, advisable to switch off the
viewfinder display lever.
3. Manual Flash Control with Canon Speed-
lite 155A, 177A, 188A 199A or 577G
The flash is on Manual and the aperture is
determined by a guide number calculation
and then set manually on the lens aperture
ring. The digital readout will include shutter
speed, “F” flash signal and the “M” signal
for manual aperture control. No aperture
data will be displayed. When the flash is set
to Manual, the viewfinder will display “M”
even if an FD lens is at the “A ” mark.
4. Long Exposures with Canon Speedlites
133A, 155A, 177A, 188A, 199A, 533G and
577G
When the shutter speed is at “B”, the shutter
speed data in the digital readout will be
replaced by “bu” for “bulb”. The remaining
information as well as exposure warnings
remain the same as in each of the above
three cases.
For example:
1) AE Flash
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