Canon FTb Instructions Manual page 21

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Aperture Needle
[
@
)
Meter Needle
Meter Index
Red Signal
Outside the Coupling
Range)
I
-e
.
I
align the two needles by turning the shutter speed dial.
• The moving range of the aperture needle inside the
viewfinder changes according to the lens speed.
Thus, it
will not always move vertically the full length of the view·
finder. Change the shutter speed when the aperture needle
cannot be aligned with the meter needle.
6
When the shutter is set on
.
the high speed
side,
the
meter needle moves downward
.
When it is set at a
slower speed, the needle moves upward. When the shutter
is set at a slow speed outside the meter coupling range, the
meter needle swings all the way up and the red signal
ap·
pears at the bottom of the
viewfinder,
and metering is not
possible even if the f/stop is changed.
When the red
signal appears and metering cannot be performed, use
high ·speed film or the optional Canon Booster
.
Refer to
"Coupling
Range of Built·in Exposure Meter" on page 24
.
Select a faster shutter speed when the meter needle
swings all the way
up,
and a
slower
speed when it swings
all the way down.
Since the shutter speed dial cannot be set at the
inter·
mediate positions, the shutter speed priority method is re
o
commended when exposure accuracy is a crucial factor.
21

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