User manual
Table Of Contents
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Viewfinder
Information
The
Canon
AT
-1
is
a
camera
offering full
aperture
metering
with
FD lenses
where
the
aperture
needle
is
coupled
to
the
shutter
speed,
aperture
and
film's
sensitivity
when
FD
lenses are used_
Furthermore,
when
using
Canon
FL
lenses
on
the
AT-1,
the
exposure
reading
is
performed
with
stopped
-
down
metering.
The
Central Emphasis Metering
method
of
exposure
measurement
is
used
in
the
AT
-1
to
deliver
the
optimum
exposure
to
the
main
subject
without
being
affected
by
the
bright
sky
in
the
upper
part
of
the
picture
area.
Microprism
c>
Split
-Image
Matte
32
-~-~~~--
In
the
center
of
the
viewfinder
is
a range-
finder while
the
meter
needle
and
the
aperture
needle (circular) are
found
to
the
right. The
exposure
metering range index marks are in
the
upper
and lower right.
The
exposure
metering range
index
mark
in
the
upper
right
is
also used as
the
battery
check
index mark.
The
exposure
metering range
extends
from
EV
3
(f/1.4,
114
of
a.
second)
to
EV 17
(f/16,
1/500
of
a
second)
at
ASA
100
film
with
FD
50mm
f/l.4
S.S.C. lens.
Battery Check/Overexposure Warnin!
Index
Mark
Aperture Needle
..£:l_---
Meter Needle
Underexposure Warning
Index
Mark