Olympus OM-2 - Manual (Page 33)

THE T32(T20)/OM-2 WAY—FLASH PHOTOGRAPHY
COULDN'T BE SIMPLER AND MORE ACCURATE
T32 (T20) and OM-2
(TTL Centralized Control
flash operation)
Picture angle
= Light measuring
angle
All required of the T32 (T20) is a flick of the on/
off switch. The rest is taken care by the OM-2.
The dial settings required of conventional
"auto" flash units — ASA film speed setting,
aperture setting, flash mode switching, exposure
compensation — are not needed with the T32
(T20).
Unlike conventional auto flash units which re-
gulate flash emission by an independent light sen-
sor, the T32 (T20) utilizes the OM-2's own built-
in SBC light sensors, so that flash acceptance angle
always coincides with the picture angle of the
camera lens.
The OM-2 shutter automatically closes at the
instant the flash exposure has been completed.
Ordinary electronic flash
unit and camera
(Normal automatic
flash operation)
Picture angle
Light measuring angle
eliminating camera shake. Correct exposure can
be confirmed without taking your eye off the
viewfinder.
By the incorporation of an incorrect flash pre-
vention system, the electronic flash will not fire
if the shutter speed is faster than the synchroniz-
ing range.
Special techniques such as diffused lighting
are made easy, obviating complicated compensa-
tions and guesswork.
Usable flash-to-subject distance range is greatly
expanded - from 18cm (F22) to 26m (F1.2)
with a guide number of 32 (ASA 100, meters).
(From 0.6 ft. to 86 ft. with a guide number of
104 at ASA 100.).
32