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Full-Synchro Flash F280
Combined
with
the
F280,
the
OM77AF
can
syn-
chronize with the flash unit at all shutter speeds,
resulting in a flexible program that can cope with
fill-in flash photography as easily as it can
the more usual poor light situation. The aper-
ture is set at f4 (or if this is not available, the maxi-
mum aperture of the lens), and when natural light
requires a speed of 1/100 sec. or slower a Normal
"OTF" Flash is produced; when a higher speed is
required, a Super FP Flash is produced auto-
matically. After the shutter speed reaches 1/2000
sec., the aperture is adjusted to provide correct
exposure.
61
Shutter speed
Aperture