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TTL Direct "OTF" Light Metering
(Center-weighted, Averaged Light
Metering)
The
OM77AF
employs
the
famous
TTL
Direct
"OTF" (Off-The-Film) light metering system. An
Olympus first, this system which measures the light
as it falls on the film surface and controls the ex-
posure accordingly, results in superbly accurate
automatic exposure even when there are sudden
changes in illumination during the exposure, or
when it is difficult to determine the light condi-
tions beforehand, as is the case in macro photo-
graphy. When a flash unit is employed, metering
requires no effort whatsoever, even when you
employ T-Series units for bounce or diffused-light
techniques. In addition, when combined with the
Full-Synchro Flash F280, the camera can make use
of speeds of up to 1/2000 sec. for perfectly
exposed all-condition shooting.
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