Canon AT 1 User manual

Congratulations upon the purchase of
your new Canon AT-1,
a remarkably
advanced camera that reflects the latest
trends in SLR photography. As a
flawless product of Canon technology,
its vast potential as a rewarding means
of expression
is assured for years to
come by an incomparable system of
fine lenses and accessories.
At an extremely reasonable price, the
Canon AT-1 offers you through-the-
lens Central Emphasis Metering plus
many of the superb advantages enjoyed
by users of
its all-electronic counter-
part, the Canon AE-1. Its fabulous
electronic system consisting of the
Power Winder A for continuous rapid-
fire shooting, the Speedlite 155A and
199A for perfectly synchronized flash
shooting and the Data
Back A for
automatic data imprining give the AT-1
unsurpassably versatile performance.
Similarly, you have the entire system of
superior
FD interchangeable lenses at
your disposal which enable metering at
full aperture.
But perhaps most conspicuous
is the
absence of mechanical noise that
is
characteristic of conventional SLRs.
The AT-1 incorporates a wonderfully
silent electromagnetic release, in
addition to
a 10-secondelectronic self-
timer, for perfectly vibrationless
operation. Moreover, you will surely
find the Canon AT-1, with
its
extremely compact and lightweight
body tobe one of the easiest to operate
cameras ever.
In order to derive full benefit from the
many features the AT-1 affords, please
take the time to read and understand
the following instructions. Canon
remains always ready to lend you
its
support in the future with a system of
lenses and accessories unequaled the
world over.
2

nce Scale (infeet and meters) FocusingRing
Aperture Ring
Canon Breech-Lock Ring Distance
l ndex
Stopped-Down Lever
\\ L
Flash Termin$ Depth-of-FieldScale
Y EE Lock Pin
"A" Mark
-Set Ring
\
-- ASA Film
7 Speed
-Shutter Speed
Dial
7
i - -!&-. b
FilmAdvance Lever
I
Shutter Release Button
ElectronicSelf-Timer Lever
FilmRewind Crank (Shutter Release Lock)
MainSwitch (Battery Check Lever)
\
-r Acce!r#Sh!e
FilmPlane Indicator Automatic Flash Contact
Synchronization Contact
While reading the instruction booklet, unfold
this flap and the flap on the back cover tofacilitate your
understandingof the instructions.

PICTORIAL OUTLINE FOR USING THE CAMERA
I
Load the battery.
Turn the main switch on.
. ' OFF
I 0:- 1C
5
Look into the viewfinder.
Compose the picture and focus.
Out of Focus In Focus
2 Loadthe film.
Determine the exposure
by adjusting
the shutter speed dial and the aperture
6 ring.
3
- -

3 Set the ASA film speed.
4 Advance the film.
7 Press the shutter button.

Photography with the Canon Speedlite
155A
1. Take off the battery chamber cover and
load the batteries.
2.
Set the ASA film speed oF the 155A.
3. Mount the Speedlite 155A on the acces-
$oryshoe of the camera.
4.
Turn the main switch on.
5. Set the AUTOIMANU. switch.
6. Set the prescribedflstop on the lens.
7. Focus and press the shutter button.
Photography with the Canon Power
Winder
A
1. Remove the Battery Pack A.
2. Loadthe batteries intothe Battery Pack A.
3. Attach the Battery Pack A to the Power
Winder A.
4.
Take off the winder coupler cover on the
bottom of the camera body and put
it In
the winder coupler's cover holder.
5. Attach the Power Winder
A to the
camera.
6. Turn the main switch on.
7. Focus and press the shutter button.
-r. . ._ --* 8
I-- - _
-3
'i
-wndul Coupler Covcr
F' -- WR'Z

CONTENTS
..............
SPECIFICATIONS 8-10
....
Handlingthe Case and Lens Cap 12-13
...............
Mountingthe Lens 13
Loadingthe Battery and MainSwitch
. .I 4.15
..............
Checkingthe Battery 16
...
Film Advance and Shutter Release 17-18
..............
Loadingthe Film 19-20
..................
Frame Counter 21
...............
Settingthe ASA 22-23
OPERATION FOR GENERAL
................
PHOTOGRAPHY 25
Selectingthe Shutter Speed
....... 27-28
..................
Lens Aperture 28
.............
Viewingand Focusing 29
Dioptric Adjustment Lenses
......... 30
............
Viewfinder Information 32
Determiningthe Exposure
.......... 33
Meter CouplingRange
.............. 35
Holdingthe Camera
.............. 37
Releasingthe Shutter and
............
Rewindingthe Film 38-39
DETAILED OPERATIONOF
THE AT-1
.................... 41
Effectsof Changingthe Shutter Speed
and the Aperture
.............. 43-44
................
Depth-of-Field 45-46
............
Usingthe Self-Timer 47-48
.....
Flash Photographywith the AT-I 49
................. Long Exposures 50
Stopped-DownMetering
............. 52
Manual Aperture Control
......... 53-54
Lenses
..................... 55-58
ACCESSORIES. CARE OF THE
CAMERA. MAINTENANCE. AND
................
MISCELLANEA 59
......
Canon Speedlite 155A and 199A 61
Canon Power Winder A
............ 62
Canon Data Back A and Auto Bellows
. . 63
Other Accessories
.............. 64-65
Care and Storage of the Camera
..... 67-69

SPEC1FlCATlONS
Type: 35mm SLR (Single-Lens-Reflex)
Camera with focal planeshutter.
PictureSize: 24 x 36mm
lnterchangeable lenses: Canon FD series
lenses for full aperture metering. Canon
FL series lenses for stopped-down
metering.
Standard Lenses: Canon FD 55mm fl1.2
S.S.C.
Canon FD 50mm f11.4 S.S.C.
Canon FD 50mm fl1.8 S.C.
Lens Mount: Canon Breech-LockMount.
Canon FD, FL, and R lenses can be
m~untedfor use.
Viewfinder: Fixedeye-level pentaprism.
Field of View: 93.5% vertical and 96.3%
horizontal coverage of the actual picture
area.
Magnification:
1:0.82 at infinity with a
standard 50mm lens.
Dioptric Adjustment Lens S: Standard -1
diopter.
lnterchangeable with +3,
+2, +1.5, +I,
+0.5, 0, -0.5, -2, -3, and -4 diopters.
Focusing Screen: Split-image/microprism
rangefinder surrounded by matte screen
Viewfinder Information: Meter needle and
aperture needle (circular index) are seen
on the right hand side of the viewfinder.
On the upper right hand is an over-
exposurelbattery check index mark and
on the lower right hand
is a metering
limit index mark on the underexposure
side.
Viewfinder Attachments: Angle Finder A2
and
B, Magnifier S, Dioptric Adjustment
Lens S(10kinds), and Eyecup4s.
Mirror: Instant-return, large reflector mirror
with shock absorbingmechanism.
Exposure Meter: Built-in. Using CdS photo-
cell. Coupled to shutter speeds, film
speeds, and flstops. Match needle type,
TTL full aperture metering mechanism.
Light Metering System: TTL (Through-The-
Lens)Central Emphasis Meteringmethod
Exposure Meter Coupling Range: EV 3 (fl1.4
at 114 sec.) to EV 17 (fl16 at 11500
sec.) at ASA 100 film with FD 50mm
fl1.4 S.S.C. Lens.
FilmSpeed Range: ASA 25 toASA 3200

Shutter: Cloth focal plane shutter with four
spindles. Shock and noise damping
mechanisms are incorporated. All shutter
speeds are electronically controlled.
Shutter Speeds: 1
/I 000, 11500, 11250,
11125, 1/60, 1/30, 1/15, 118, 114, 112, 1,
2 (seconds)and B.
X synchronization is at 1160 seconds.
Shutter Speed Dial: The shutter speed dial is
on the same axis as the film advance
lever. The number 2 for two seconds
is
marked in orange; other numbers as well
as X synchronization are in white. There
is a shutter dial guard to prevent uninten-
tional movement of the dial. The ASA
dial
is located underneath the shutter
speed dial.
Self-Timer: Electronically controlled self-
timer. After the self-timer lever is pushed
forward, the self-timer
is activated by the
shutter release button. The self-timer
releases the shutter after
a time lag of 10
seconds. A self-timer
LED lamp blinks on
and off when the self-timer
is in
operation. The self-timer operation can
be cancelledwhile in operation.
Stopping-Down the Lens: Stopping-down
the lens can be performed by pushingthe
stopped-down lever after setting the
aperture ring.
Power Source: One 6V silver oxide battery;
Eveready No. 544, UCAR No.544, JIS
4G13, and Mallory
PX28. The battery
lasts the equivalent of
20,000 shutter
releases, or one year under normal use.
Battery Check: Battery power level can be
checked by the meter needle inside the
viewfinder .when the main switch
is
turned to the battery check index mark
"C".
Flash Synchronization: X synchronization
is at 1/60 sec. M synchronization is at
1/30sec. and below.
Flash Terminal: The accessory shoe has
a
direct flash contact and automatic flash
control contact. On the front of the
camera body is the flash terminal, JIS-B
type for flash units with a cord.
It has a
built-in protective rim to prevent elect-
rical shock.
Automatic Flash: With the Canon Speedlite
155A or 199A. set the aperture to the

flstop, and the amount of light is auto-
matically controlled for correct flash
exposure, adjusting the shutter speed to
1/60of
a second automatically.
Back Cover: The camera's back cover has a
memo holder for your convenience. The
cover can be removed for attaching the
Canon Data Back A.
Film Loading: Performed by pulling up the
rewind crank to open the back cover.
Easy film loading with multi-slot take-up
spool.
Film Advance Lever: Single strokewith 120°
throw and 30°stand-off. Tlie film can be
wound with several short strokes. The
Canon Power Winder A can be mounted
for automatic winding of the film.
Frame Counter: Additive type. Automatical-
ly resets when the back cover
is opened.
While rewinding film,
it counts back the
frame numbers.
Film Rewinding: Performed by pressing the
rewind button on the bottom and by us-
ing the rewing crank on the top. The
rewind button
is autorr~atically reset
when the film
is advanced with the film
advance lever.
Size: 141
x 87 x 47.5mrn (5-9116" x -3-7116"
x 1-718") body only.
Weight: 5909 (20-13116ozs.) body only.
7909 (27-718 ozs.) with the 50mm f11.8
S.C. lens.
8959 (31-9116ozs.) with the 50mm fl1.4
S.S.C. lens.
1,100g (38-13116 ozs.) with the 55mm
fl1.2 S.S.C. lens.
Subject tochange without notice.