The Most Important Feature Of The; Direct Light Measuring - Olympus OM-2 Instructions Manual

THE MOST IMPORTANT FEATURE OF THE OM-2 - TTL DIRECT LIGHT
... D iagram of light path in conventional SL Rs
Before shutter release
The instant the shutter has been
(A memory device
the shutter speed,
on the light
taken before
posure.)
----""' ! " ...
*++!--+-Mt---~
Stray
Light
41
... Diagram in light path in OM-2
Before shutter release
The instant the shutter has been rei
Position
In the automatic mode, the OM-2 measures the subject
brightness very differently from any other automatic cam-
era - faster and with much more accuracy . With the OM -2 ,
light entering the lens is measured directly at the film plane
by the sensors at the precise moment the film is being ex-
posed. When sufficient light has reached the film, the elec -
tronic brain senses the information and instantly clo ses the
shutter.