Using
Built-in
Meter
[xposure
Canon
FTb
provides
the
most
accurate light measurement
possible
with
its
unique
TTL
(Through-The'Lens)
system.
The
built-in exposure meter, which
is
of match
needle
type,
is coupled to the ASA film
speed
scale,
shutter
speed
dial
and
preset
aperture ring.
The
CdS
photocell
of the exposure
meter
is
placed
in the
closest
position
to
the beam-splitting
condenser
lens.
The
central area
metering
system
enables
accurate
meas-
urement
of the
main
subiect
even in
counterlight.
The
rectangular
frame
in
the
viewfinder
represents
the
light measurement
area
of the
CdS
photocell.
Place
the
main subject within
this
frame
and measure
the
intensity
of light so
as
to
obtain the
proper
exposure.
I
The correction
of
the
full
aperture opening
of the
lens
is
performed
automatically. Therefore,
the
operation does
not change
regardless
of
the
speed
of the lens
used.
An
FL
lens can
be used
only
with
stopped'down
metering.
r
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.
I
Metering
at
"B"
on
the
shutter
speed
dial
is
not
possible
with the
built-in
exposure meter,
because
"
B
"
is
used for
long
exposures over one second.
I
Always
use
a
lens
hood when shooting
against the
ligh t.
l8
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