Canon FTb - Average Exposure Calculation

@
Meter
Needle
Meter
Index
q
lf the
meter
needle
is
pointing
above
the
meter
index
l'
and
cannot
be
matched
by
closing
the
preset
aperture
ring
and
metering
cannot
be
performed,
turn
the
shutter
speed
dial to the
faster
side.
lf the
meter
needle
is
pointing
below
the
meter
index
and
cannot
be
matched
by opening
the
preset
aperture
ring,
turn
the
shutterspeed
dial to
the
slower
side.
when
the red
signal
appears,
use high-speed
film
or
the
Canon
Booster.
r
Full
aperture
metering
is
rather
recommended
with
the
FD
lenses,
because
the FD
lenses
have
a
full
aperture
signal
so as
to
fully
compensate
the
built-in
exposure
meter.
How
to
"
Average"
Exposures
When
measuring
a
subject
with
greaily
different
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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