Canon FT QL - Meter Circuit Switch; How to Average Exposures

■ When ASA 25/DIN 15 appear in the small windows,
this is as far as the film speed set ring turns to the left.
White dots at the right turn extremity read ASA 2000
and DIN 34.
Meter Circuit Switch
The exposure meter is actuated by pressing the meter
circuit switch towards the lens.
The meter circuit switch can be fixed for continuous
light measurement by pressing it towards the lens after
setting the meter circuit switch lock at " L" position. If
the lock is returned to its original position (white dot) the
meter circuit switch will return to its original position.
■ Be sure to release the meter circuit switch lock after
the continuous light measurement.
■ With the fixing of the meter circuit switch, telephoto
lenses can be conveniently handled. Also when shooting
subjects with different light intensities, continuous light
measurement is possible.
■ Due to the characteristics of the CdS photocell, the
movement of the meter needle may occasionally become
slack, owing to changes in the degree of light.
How to "Average'' Exposures
When measuring a subject with greatly differing dark and
bright parts, take two measurements, one each of the
dark and bright parts. Then obtain the average value
and set the f/stop or shutter speed accordingly.
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