Canon 199 A - Manual (Page 29)

There are cases in which the subject
and background are not suited for
automatic exposure flash. For example,
when the main subject is small and the
background is dark or far away, or on
the contrary when the surroundings
are whitish or bright and reflection is
strong.
Under these conditions, automatic
exposures in flash are affected by the
background and the subject becomes
over-exposed or under-exposed. In
order to avoid this, it is best to switch
over to manually operated aperture
using the guide number.
In the case of photography using the
selftimer, press the shutter release
button only after confirming the pilot
lamp is lit.
When shooting a subject from a distance
of less than one meter, unevenness
in flash sometimes occurs due to the
difference in the optical axes of the
electronic flash unit and lens.
Precautions for Automatic Flash
Photography
formation selected on the flash is not shown
in the finder. Shutter speed scale appears in
the finder and the meter needle position
shows the X-sync speed. When the automatic
flash photography is discontinued by setting
the selector at the back of the 199A to M,
the meter needle in the aperture scale display­
ed to the right of the field of view swings all
the way up. When the camera/finder and
mode combination is such that the shutter
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