Olympus 2, OM-2 Instructions Manual
To an OM-2 Owner
Th e OM -2 is a unique 35m m single lens reflex, utilizing the
Olympus TTL Direct (Off-the-Film) Light Measuring System
fo r unprecedented accuracy of automatic exposure.
In addition, it offers full manual exposure control at the
flip of a lever switch. OM-2 has se t a n e w standard for reliability and versatility in a compact SLR, to meet the demands
of the professional and amateur alike, f o r standard as well
as scientific and technical photography pursuits.
OM-2 i s part of the total Olympus OM System, enabling you
to capture life as it happens, from photomicrography to
astrophotography, from photojournalism to portraiture.
With its many system components, the OM-2 permits an infinite range of photographic capabilities ... a camera that
grows as your needs expand. To get the optimum results
from your OM-2, carefully study this Owner's Manual. It
is well worth your time, and wil l provide a sound basis fo r
years of f in e OM-2 ph o t og raphs.
1
DESCRIPTION OF CONTROLS
(P. 27)
(P. 9)
Rewind Shaft
Film Chamber
Film Guide
Pins (2 )
Shutter Curtain
Motor
Guide Pin Hole
Battery
Chamber
Motor Drive Socket Cap
Tripod Socket
Camera Back
Camera Back
Pressure Plate
(P. 37)
Motor Coupling Terminal
Refer
to
pages
in
parentheses
for
detailed
explanations
of
each part.
Film Take-Up
Spool
Viewfinder
Eyepiece Frame
Battery
Check Lamp
Recordata Back Contact
Dual Sprocket
B LOCK Button
(P. 12)
(P. 9, P 44)
(P.58)
(P.8)
(P. 43)
(P. 37, P. 40)
(P. 7)
(P.37, P40)
Release Pin
2
Manual Shutter
Speed Ri ng
Lens Release Button
FP and X Flash Synch Selector
Flash Sy nc hr oni za ti on Socket
Rewind Knob
/Camera Back Release
Rewind Crank
Sel ector Lever
Hot Shoe Socket
Depth of Fie ld Scale
Aperture Ring
Focusing Ring
Lens Mount Ring
Body Mount Ring
Exposure Copensation
Dial/Film Speed Dial
Shutter Release Button
/Cable Release Socket
Exposure Counter
(P. 10, P. 20)
(P. 11)
(P. 10)
(P. 11)
AS A Film Speed
Window
Film Advance Lever
Memo Holder
(P. 12)
(P. 7)
(P.30, P.35)
(P.35)
(P.20)
(P.26)
(P. 12,
P.15, P.16,
P. 17. P. 18, P. 35)
(P. 14)
(P.26)
(P. 11.
P.23)
(P.19, P.20, P.37,
P.42, P.44)
(P. 8,
P.15,
P. 24,
P44)
(P.9, P.20,
P. 44)
3
Rewind Release Lever
Accessory Shoe 4
Shoulder Strap Eyelet
Self-Timer
Depth-of-Field
Preview Button
Lens
(P.20, P.44)
(P.21, P.44)
(P. 25, P.
26.)
4
TABLE OF CONTENTS
On
OM-2
To an
OM-2
Owner
...............
1
Description
of
Controls
............
2
Mounting the Lens/Inserting the Batteries . 7
Battery Check and Mirror Lock-Up ..... 8
Loading
the
Film
................
9
Operating the Film Advance Lever/
Exposure
Counter
..............
10
Setting
the ASA
Film
Speed
Dial
.......
11
Ap ert ur e Ring and Manual Shutter Speed
Ring
.......................
12
Setting the Selector Lever/Viewfinder .... 13,
Focusing
.....................
14
Automatic
Exposure
Control
.........
15
Manual
Exposure
Control
...........
17
Holding
the
Camera
..............
19
Unloading the Camera/Making Multiple
Exposures
...................
20
Setting
the
Self-Timer
.............
21
Exposure
Compensation
............
22
Exposure Compensation for Aut omatic
Measurement
.................
23
Exposure Compensation f or Manual
Measurement
.................
24
Depth
of
Field
.................
25
Depth of Field Scale/Preview Button .... 26
Infrared Photography/Camera Back
Replacement
.................
27
Interchangeable
Focusing
Screens
......
28
Flash Photography wi th t he T32 (T20)
Electronic
Flash
...............
29
5
On O M System
The T32, (T20)/OM-2 Way — Flash
Photography Couldn't Be Simpler and
More
Accurate
................
32
Bounce
Flash
..................
33
Cloce-up
Flash
.................
34
Flash Photography with an Electronic
Flash
Unit
...................
35
Flash
Bulb
Photography
............
36
Motor
Drive
Photography
...........
37
Winder 2 Operation
..............
40
Care
and
Storage
................
42
Questions
and
Answers
............
44
The Most Important Feature of the
OM-2 — TT L Direct (off-the-film) Light
Measuring
...................
47
Zuiko Interchangeable Lens Group . . . . .
Table
of
Interchangeable
Lenses
......
Interchangeable
Lens
Group
Units
......
Finder
Group
..................
Finder
Group
Units
..............
Flashphoto
Group
...............
Flashphoto
Group
Units
............
Motor
Drive Group
..................
Motor
Drive
Group
Units
...........
Macrophotography
Group
...........
Macrophotography
Group
Units
.......
Phototechnical
Group
.............
Phototechnical
Group
Units
.........
Photomicrography
Group
...........
Photomicrography
Group
Units
.......
Chart
of
Photographic
Ranges
........
Case
Group
and
Units
.............
51
53
55
57
58
61
64
71
74
76
78
84
88
89
92
94
95
6
MOUNTING THE LENS
INSERTING THE BATTERIES
Moun t the Lens.
Align the red dots on the lens flange and the body
mount ring. T urn the le ns cl ockwise until the lens
release
button
springs
up and you will
hear
posi-
tive "click".
Lens Removal
To detach the lens, press
down on the lens release
button and turn the lens
counter-clockwise. Always
attach the front and rear
lens caps when the lens is
removed from the body to
prevent any possibility of
damage.
Insert two 1.5V silver oxide batteries SR44
(Eveready EPX-76 or equivalents) into the bat-
tery chamber.
CAUTION: Batteries should be always replaced
as a pair. If battery polarity is incorrect, the cam-
era does not function.
7
BATTERY CHECK AND MIRROR LOCK-UP
a point to switch off the selector lever when the
camera is not used.
By pressing the selector lever to the "CHECK•
RESET" position, you can check the batteries
and/or unlock the mirror.
Check the Batteries.
Move the selector lever to the "CHECK•RESET"
position. The battery check lamp indicates bat-
tery condition as follows:
The red lamp lights brightly — Battery volt-
ag e is sufficient.
The red lamp flashes on and off — Batteries
are very weak. Fresh batteries are recommended.
The lamp does not light — Batteries are drain-
ed. Replace them.
NOTE: Silver oxide batteries will last approxi-
mately one year. To avoid battery drain, make it
Mirror Lock-Up
If the mirror is up, the field of view turns dark
through the viewfinder, and the film cannot be
advanced. This lock-up of the mirror occurs when
no batteries are loaded or batteries are deplet-
ed, or the film is advanced during exposure.
The mirror lock-up does not indicate any break-
down
of the
camera,
but a
built-in
safety
device
to prevent any trouble. Press the selector lever to
the "CHECK•RESET" position, and unlock the
mirror.
In
case
,
shooting
can be
resumed
im-
mediately. In case , replace batteries.
CAUTION: You cannot unlock the mirror after
battery replacement, if you omit pressing the
selector lever to the "CHECK•RESET" position.
NOTE: When the mirror locks up, a battery drain
prevention device is activated to conserve power.
8
LOADING THE FILM
Pull the rewind knob up
and open the camera back.
Insert a film cartridge into
the f il m chamber and push
the rewin d knob back.
Insert th e f il m leader int o
one of the slots in the film
take-up spool.
Turn the advance lever so that the film perforations engage th e sprocket teeth.
Close the camera back until it clicks.
Make sure the selector lever is in the OFF position.
NOTE: Fold out the rewind crank and rotate it
clockwise
slightly
to
remove
any
slack
in the
film.
Then if the rewind crank rotates as yo u turn the
advance
lever,
the
film
is
properly
advancing.
9
OPERATING THE FILM ADVANCE
LEVER
EXPOSURE COUNTER
Turn the advance lever to the right as far as it will
go. The fil m can be advanced by one frame, in a
single stroke or in multiple short strokes.
NOTE: If the advance lever stops moving because
you've shot the last remaining film frame while
you are
advancing
the
film,
discontinue
the
film
advance
and
rewind
the
film.
(Read
pages
37~41
fo r motor drive shooting.)
Exposure Counter
The exposure counter is indexed f rom "S" (Start)
to 1, 2 ... up to 36 in even numbers and "E"
(End). Whenever the camera back is opened, the
exposure counter automatically returns to "S".
10
SETTING THE ASA FILM SPEED DIAL
Lift up the outer collar of the exposure compensation dial and rotate until the ASA speed
for the film appears in the window.
The ASA
film
speed
scale
on the
dial
is
mark-
ed from 12 to 1600. If you are not able to
rotate the outer collar to the desired ASA in
one turn of the d i al (only 3 stops can b e rotated
in one turn of the dial), release the collar and
turn the exposure compensation dial several
click stops in th e opposite direction from the
ASA you are trying to set. Then, lift the outer
collar again and continue turni ng to the desir-
ed ASA setting. NEVER FORCE THE DIAL
WHEN SETTING A SA.
Once the setting has been made, turn the dial
until t he white line is aligned with the black
index line on the pentaprism housing.
CAUTION: Make sure yo u align the white line
with the black index line on the pentaprism
afte r setting ASA.
THE MEMO
HOLDER
A memo holder pro-
vided on the cam-
era back accepts a
memo slip or the
end flap from most
35mm film packages
as a reminder of
ASA, exposure numbe r, etc.
11
APERTURE RING AND MANUAL SHUTTER SPEED RING
Aperture Ring
The opening (aperture) in the lens diaphragm is
marked in F stops on the aperture ring. The higher
the F number, the smaller the lens opening (less
light) and provides greater depth of field than
lower F numbers (see page 25).
When setting the aperture ring, you may use either
the click-stop positions or a n y in-between settings
to obtain precise exposure control.
NOTE: All lenses in the OM System (except cer-
tain specialized lenses) provide fully automatic
diaphragm control allowing you to focus and
compose your picture with the lens fully open.
The diaphragm will automatically close to the
pre-selected F stop at the moment of exposure.
And immediately re-open after exposure.
Manual Shutter Speed Rin g
Shutter speeds engraved on the manual shutter
speed ring ar e used only for non-automatic camera
operation. B indicates
"bulb"
at
which
set-
ting the shutter will remain open as long as the
shutter release button is held down. The other
engravings indicate fractions of a second; for e x-
ample "T" for 1 second, "2" for 1/2 second .....
up to
"1000"
for 1
/1000
second.
To set at
"B",
rotate the ring while pressing the B LOCK button at the lower l eft of the body mount.
Be careful that shutter speeds are set only at
click stop positions. Make sure that the selector
lever is set at a click stop position.
12
SETTING THE SELECTOR LEVER
The selector lever on top of your camera has four
positions as follows (with click stops at
AUTO-OFF-MANUAL):
1) AUTO — Automatic exposure control; you
preset the F s top and the camera automatical-
ly sets shutter speed for proper exposure.
2) OFF — Camera turned completely off to avoid
battery drain. Always store your camera with
the selector lever in this position.
3) MANUAL — Zero-method exposure operation;
set shutter speed and F stop for proper ex-
posure (see page 17).
4) CHECK•RESET
—
Battery test position simul-
taneously with release of mirror lock-up.
The three-position viewfinder control center
allows you to see the operating mode of your
camera without checking the position of the
selector lever.
NOTE:
If you
release
the
shutter
with
the
selector
lever at OFF in normal lighting condition, the
built-in automatic exposure control is activated
to take a properly-exposed picture, so as not to
miss optimum exposure opportunity, at any mo-
ment. The difference between the automatic ex-
posures in the O F F position and the AUTO posi-
tion, however, is that the OFF mode exposure
stops in 1/30 sec. maximum to save battery exhaustion, and the AUTO viewfinder scale does
not appear.
VIEWFINDER
AUTO
OFF
MANUAL
13
FOCUSING
Loo k throug h t he viewfinder and turn the focusing
ring
in
either
direction until
your
subject
appears
sharpest. The split image will be vertically align ed
in the central spot of the Focusing Screen or a
shimmering effect of the microprism ring around
the central sp ot wil l disappear when critical focus-
ing has been achieved.
NOTE: Y o u ca n determine the distance between
the subject and the film plane by reading the dis-
tance
scale
on the
focusing
ring
after
setting
criti-
cal focusing. The actual distance is indicated o pposite the red central index mark on the lens
mount
ring;
the
white
scale
indicates
this
distance
in meters and the orange scale in feet.
(For Focusing Screen replacement read pages 28 ,
59 and
60).
Out of focus.
Microprism
Ring
Rangefinder
Spot
Matte Field
In focus.
14
AUTOMATIC EXPOSURE CONTROL
The Aperture-Preferred System
The aperture-preferred system
is the most convenient and
easy-to-use method of auto-
matic operation, particularly
outdoors w h e n using 50mm or
wide-angle lenses. To use this system:
Set the selector lever to the "AUTO" position
making
sure
that
the
lever
"clicks"
into
place.
Set the F stop you wish to use on the lens
aperture ring.
The camera will automatically determine the
shutter speed required for proper exposure and
indicate tha t speed in the viewfinder. Then RE-
LEASE THE SHUTTER.
NOTE: At shutter speeds slower than 1 / 60 second,
the possibility of camera movement during ex-
posure is increased. If the needle in the viewf inder
indicates a shutter
speed
in
this
area,
turn
the
aperture ring to the left (so as to open the aperture).
For use of interchangeable lenses of various angles
of view, refer to the data below to determine the
hand-held shutter speed and avoid blurry pictures:
Wide-angle and super wide-angle lenses — 1/3 0
second or faster. 50mm lenses — 1 /60 second
or faster. Telephoto and Zoom lenses to
100mm — 1/125 second or faster. Telephoto
and Zoom lenses to 200mm — 1/250 second or
Red Zone
Blue Zone
15
faster. Super telephoto lenses of 300mm and
up — 1/500 second or faster.
If the viewfinder needle enters the red zone
Warning against over-exposure. A shutter speed
faster than 1 /1000 second is required for pro-
per exposure, but the shutter will be released
at 1/1000 second. Since this is beyond the
range of your OM-2 and an overexposed photograph would result, turn the lens aperture ring
to a higher F stop until the meter needle moves
out of the red zone.
If the viewfinder needle enters the blue
"AUTO" zone Indication for long time exposure. A shutter speed longer than 1 second
is required for proper exposure.
Your OM-2 provides for automatic exposures
fro m 1 second to 120 seconds (with A SA 100
at normal temperature and h umidity). If you
wish to close the shutter during a long time
exposure under AUTO operation, turn the
selector lever to the OFF position, and the
shutter closes.
CAUTION: Do not advance the film while
the mirror is up during an automatic exposure,
or the mirror will lock up.
The Shutter Speed-Preferred System
Should you wish to select a shutter speed to meet
a specific photographic situation (e.g., stopping
fast action, eliminating camera movement or controlling depth-of-field), you may use a shutter
speed-preferred method of automatic exposure
control. To use this system:
Set the se le c t or lever to t h e "AUTO" position.
Look through the viewfinder and turn the
aperture ring until the viewfinder needlepoints
at the desired shutter speed.
16
MANUAL EXPOSURE CONTROL
Set the selector lever to
"MANUAL", and the exposure index marks and
the meter needle are visi-
ble in the viewfinder.
Shutter Speed-Preferred Manual Exposure Control
Should you wish to preselect a shutter speed
turn the shutter speed ring until the desired
speed is opposite the red reference dot on the
lens barrel (see page 12).
Look through the viewfinder and turn the
aperture ring until the needle lines up in the
center of the index. For fine exposure adjustment you can use any click-stop or intermediate F stop position.
Aper t u r e- P r e f e rr e d Manual Exposure Control
Turn the aperture ring until the desired F stop
is opposite the white index mark.
Look through the viewfinder and rotate the
shutter
speed
ring
until
the
needle
lines
up as
close as possible to t he center of the index.
Make sure that the shutter speed ring is clicked
into position and not between two settings.
Make the final exposure adjustment by turning
the aperture r i n g u n t i l the needle aligns exactly
in the center of the index.
CAUTION: The shutter speed thus obtained
should meet the other photographic conditions
properly, especially at "B" where the shutter
speed ring is not coupled with t h e exposure meter.
17
Exposure Meter Needle
Exposure Meter Index
If the Exposure Needle Does Not Center o n the
Index
If an exposure or a shutter speed is improperly
selected, th e exposure needle wi ll no t center on
the
index.
Reset
the
shutter
speed
or F
stop
until
the needle is ce n tered.
You may use an ND (neutral density) filter if the
subject is too bright, or an electronic flash or flash
bulb if the subject is too dark.
ASA 100
ASA 100
ASA 100
50mm F1.8 lens,
fully opened
50mm F1.4 lens,
fully opened
55mm F1 .2 lens,
fully opened
1/2
sec.
1/2
sec.
1/2
sec.
Light Measuring Range of the Exposure Meter
The measuring range is EV 1.5-EV17 (A SA 100,
with F1.2 55mm lens). The list above summarizes
the lowest measurable limits in dealing with extreme low light conditions.
CAUTION: If the aperture ring or shutter speed
ring is turned below the limits in the list, with ex-
tremely low lighting or the selector lever OFF,
the needle sometimes moves, but the meter is not
functioning.
18
HOLDING THE CAMERA
Proper camera handling is important in assuring
the sharpest possible pictures.
Holding th e Camera Horizontally
Keep both elbows close to the body, to steady
the camera.
Putting the Camera into Operation
The aperture ring, focusing ring and shutter speed
ring ar e so arranged as to enable one hand opera-
tion right up to the moment the shutter is released.
Hold your breath at the moment of shutter release.
Transport the film advance lever with your right
thumb and squeeze the release button smoothly
using the cushion, not the tip, of your index
finger.
Holding the Camera Vertically
For vertical shooting, keep one elbow close to
your body and press the camera tightly against
your forehead.
NOTE: Steady yourself against any nearby sup-
port (such as a tree, fence, or wall) whenever pos-
sible.
NOTE: For telephotography, or slow shutter
speed photography, it is recommended that you
use a tripod and hold the camera steady with
you r hands.
19
UNLOADING THE CAMERA
Whe n the entire roll of fil m has been exposed re-
wind the film.
Turn the rewind release lever counter-clock-
wise by about 90°.
Fold out the rewind crank and wind it in the
direction of the arrow. Wh ile rewinding, you
will feel tension on the crank. When the ten-
sion stops and the crank turns freely, the film
has been completely rewound back into the
cartridge.
Open the camera back by pulling up on the
rewind knob and remove the film cartridge.
Keep camera and film out of direct sunlight
while unloading.
Should you wish to make more than one exposure
on the same frame:
Take up any slack in the film by slowly turn-
ing the rewind crank in a clockwise direction
until it stops, then take the first exposure.
Turn the rewind release lever counter-clock-
wi se by about 90°.
Hold both the rewind knob and rewind re-
lease lever to prevent them from turning and
advance the film advance lever. The shutter
will then be cocked for the next exposure
without advancing the film.
Press
the
shutter
release
button
with a slow,
steady squeeze.
The exposure counter will advance with each
exposure.
After completing the multiple exposures, put
the lens cap on the lens, advance the film, and
shoot a blank fra me to avoid overlapping.
NOTE: You can make as many multiple exposure
as yo u li ke by repeating the above procedure. With
each exposure on the same frame, the possibility
of slippage is increased.
MAKING MULTIPLE EXPOSURES
20
SETTING THE SELF-TIMER
Rotate the self-timer lever counter-clockwise
so that the shutter can be released after an
elapse of delay time between 4 sec. to 12 sec.
according to the lever setting as shown above.
You may set the self-timer lever either before
or after advancing the film.
Turn the start lever clockwise to the vertical
position to activate the self-timer lever. The
shutter will then be released after the preset
time.
Stopping the Self-timer
To stop the self-timer during its operation, turn
the start lever count er-clock wise. If you tu rn the
start lever clockwise again, t he self-timer can re-
sume its action.
NOTE: After setting the lever, you can release
the
shutter
by
pressing
the
shutter
release
button.
NOTE: If you do not reset the self-timer, the
timer lever will begin moving immediately after
advancing
the
film
and the
shutter
will
be
releas-
ed earlier than expected. If the film has not been
advanced fully, the timer lever will stop half-way.
To re-activate the timer, move the start lever
counter-clockwise to stop the timer lever, return
the timer lever to the starting position, and ad-
vance
the
film.
Then,
turn
the
start
lever
again.
21
EXPOSURE COMPENSATION
Before compen-
sation
When the most im-
portant area of the picture is much darker than
the general picture area (blue sky, snowfield,
etc.), the meter will have a tendency to read the
brightest part of the picture leaving the main subject under-exposed. Alternatively, when taking a
picture of a bright subject against a dark background the meter tends to read the darkest part
Before compen-
sation
leaving the main subject over-exposed. In these
situations, proper exposure compensation helps
you take fine pictures.
NOTE: With backlighting or sidelighting it's al-
wa ys a good idea to use a lens hood to eliminate
unwanted glare.
After compensation
After compensation
22
EXPOSURE COMPENSATION F O R AUTOMATIC MEASUREMENT
If you wish to change the exposure setting automatically selected by the camera, use the exposure
compensation dial and a compensation marker
appears in the viewfinder.
When the main subject is much darker than the
general background or when strong light strikes
the subject from behind or from the side, turn
the dial to the ( + ) side.
Turn the camera to the subject so that the subject
fills most of the viewfinder, or move the camera
toward the subject. After reading the shutter
speed, return to the original position and rotate
the compensation dial until the meter needle
points at the read-out speed in the finder.
NOTE:
In
such a case
it is
recommended
to
turn
the compensation dial to the + 1 side.
When taking a picture of a bright subject against
a dark background (spotlightng, deep shadows,
etc.), turn the compensation dial to the (—) side.
Move forward until the subject fills as much of
the viewfinder as possible, (with a zoom lens, you
may be able to do this by zooming in on th e subject without chaning your positions). After
noting the shutter speed indicated by the meter
needle, return to your original position, recompose
the picture, and turn the compensation dial until
the shutter speed needle indicates the speed obtained from your close-up meter reading.
23
EXPOSURE COMPENSATION FOR MANUAL MEASUREMENT
1 Stop Over
1/2 Stop Over
Correct Exposure
1/2 Stop Under
1 St op Under
Manual exposure can be compensated by adjusting the F stop or shutter speed. The exposure
needle indicates over-exposure at the (+) side, or
under-exposure at the (—) side.
Dark subject in bright backlighting
When the most important area of the picture is
much darker than the general picture area (strong
light hitting the main subject from behind or from
the side) the meter will have a tendency to read
the brightest part of the picture leaving the main
subject under-exposed. To compensate for this,
move forward until the subject fills most of the
viewfinder picture area and set the F stop/shutter
speed combination which centers the meter needle
between the index marks. Return to your original
position and take the picture without changing
this F stop/shutter speed combination even though
the needle is not centered.
NOTE: Over-exposure by + 1 stop renders a good
result in such a case.
Bright subject in d ark background
As previously mentioned, fill the viewfinder pic-
ture
area
with
the
subject
as
much
as
possible,
and set correct light measurement. Return t o your
original position and expose fo r fin e pictures.
CAUTION: After taking a picture using the com-
pensation dial, be sure to return the dial to the
normal setting
24
DEPTH OF FIELD
F1 6 , 1 /15 sec.
F2, 1/1000 sec.
Depth of field is the area of acceptable sharpness
in front of and behind the subject in focus. As
you get closer to your subject or as you open your
lens (e.g. from F16 to F2.8) the depth of field
becomes shallower. By stopping your lens down
(e.g. from F2.8 to F16) or getting f arther away
from your subject this depth of field can be increased.
The table below shows that when the camera-
to-subject distance is 3m, the depth of field at
F16 ranges fro m 1.93m t o 6.93m.
As you
press
the
preview
button,
looking
through
the viewfinder, you can ascertain the actual depth
of field.
Depth of Field Table (F1.8 & F1.450mm Lenses)
Circle of least confusion 1 /30mm
25
DEPTH OF FIELD SCALE
PREVIEW BUTTON
The double series of numbers engraved on the
depth of field scale represents F stops: F4, F8,
and F16. Once you have focused on your subject,
all objects within the distance range indicated
on the lens distance scale between the marks for
the F stop you have selected will have acceptable
sharpness. For example, in the above picture, th e
camera-to-subject distance is 3m (10ft.) and the
lens is set at F16. If you read the distance scale
at the points opposite the engraved "16" on both
sides of the refer enc e dot, you will find that the
depth of field is from 1.9m (6ft. ) to 7m (23ft.).
When you wish to see which objects fall within
the acceptable zone of sharpness (depth of field),
press the preview button on your lens. The diaphragm of the lens will stop down to the preset
F stop enabling y ou t o see th e depth of fi eld in
the viewfinder.
CAUTION: If you jerk the preview button while
depressing the shutter release button halfway
down the shutter might be released.
26
INFRARED PHOTOGRAPHY
CAMERA BACK REPLACEMENT
The OLYMPUS OM System Lenses are provided
with an infrared index mark engraved in red on
the depth of field scale.
When
shooting
with
infrared
film,
focus
normally
on your subject without the red filter on and read
the subject distance on the distance scales. Then,
turn the focusing ring to the right until the distance reading is opposite the infrared index mark.
Your
lens
will
then
be in
focus
for
average
in-
frared photography. Shoot with the red filter on.
In the above picture, the red index is set at infinity.
CAUTION: Due to special light gathering requirements of infrared films, it is recommended that
you follow the film manufacturer's recommendations regarding exposure.
The camera back of the OM-2 is fully interchanbe-
able with the Recordata Back 2, 3 and 250 Film
Back 1. To remove the camera back, push down
on the release pin as shown. Do not remove the
back unless necessary.
The Recordata Back 2, 3 registers data such as
date, number, alphabetical code, etc. directly on
the picture.
The 250 Film Back 1 is designed for winder or
motor drive shooting; it accepts a bulk loaded
magazine of 250 frames.
27
INTERCHANGEABLE FOCUSING SCREENS
The OM System interchangeable focusing screens
provide
you
with
the
ultimate
in
focusing
versa-
tility.
Optional
screens
are
available
to
suit
virtual-
ly every picture-taking situation. The focusing
screens come with a special tool. To remove the
focusing screen:
a) Detach the camera lens from the camera body.
b) Use the special tool provided to push up on
the release catch underneath the top ledge of
the mirror box (see the photo above). This
allows the screen and screen frame to drop
down.
c) Remove th e screen from inside t h e camera by
gripping th e tip of the screen wi th the tool as
shown.
CAUTION: Although the above procedure can be
done with fingers, it is recommended that you
use the special tool supplied. Changing focusing
screens is a procedure to be exercised with great
care. Trying to change a screen with you r fingers
can result in fingerprints and costly damage to
the surface of the screen, the prism, or the mirror.
Should this occur, cleaning or repair MUST be
handled by an authorized service center. Such
damage is not covered by the product warranty.
d) To install the screen, fi t it into th e frame and
push the frame upward gently until it clicks
into place. Gently shake th e camera body to
make sure the screen is held securely in place.
28
FLASH PHOTOGRAPHY WITH THE T32(or T20) ELECTRONIC FLASH
Electronic Flash T20
Electronic Flash T32
T32 calculator panel (blank side for TTL "OTF" Auto flash)
The T32 and T20 are the world's first fully automatic electronic flash units. All their functions are
controlled directly by the OM-2 to perform ex-
tremely easy, yet highly accurate flash exposures.
(See pp. 61~69 fo r further information on flash
units.)
29
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