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Measuring – Olympus OM-2 User Manual

Page 48

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THE MOST IMPORTANT FEATURE OF THE OM-2-TTL DIRECT(OTF)LIGHT

Diagram of light path in conventional SLRs

Diagram of light path in OM-2

Before shutter release

The instant the shutter has
been released

(A memory device controls

the shutter speed, based on

the light reading taken before

actual exposure.)

In the automatic mode, the OM-2 measures the

subject brightness very differently from any other
automatic camera — faster and with much more
accuracy. With the OM-2, light entering the lens

is measured directly at the film plane by the sen-

The instant the shutter has been released

sors at the precise moment the film is being ex-

posed. When sufficient light has reached the film,

the electronic brain senses the information and

instantly closes the shutter.

Light Sensor

Position

Before shutter release

Stray

Light

Light Sensor Position

47

MEASURING