Cosina CT-10 / CT-20 User manual

ENGLISH
Your GOSINA CT-1o/20 reflex is a high quality camera capable of fully automatic exposure by
automatically controling the shutter speeds.
Just set the aperture and the camera will adjust the shutter speed automatically for correct
exposure. All you need to do is focus and press the release button.
DEUTSCH
Wir_begrUBen Sie in deraufregenden Welt del cOSlNA. lhre neue Kamera gehort zur Familie der
professionellen Qualitatskameras, die unter Berucksichtigung  del AnsprucFe ernsthafter
Fotografen entwickelt wurde. Markenname COSINA ist lh-re dewahr fur uberragende Optik,
hervorragende Technik und Zuverldssigkeit.
FRANQATS
Nous vous remercions potrt votre achat d'un COSINA CT-lO/CT-2O.
Le COSINA cT-lo/CT-2o est un appareil reflex mono-objectif compact, l6ger, pouvant photographier
ryeq Lll systeme d'exposition automatique donnant priorit€ au diaphragme.
Controlez  le diaphragme en automatique, effectuez ia mise au point et ippuyez doucement sur le
declencheur-tout  le monde peut ainsi reussir une photographie superbe.
La lecture int6grale du prdsent MODE D'EMPLOI vous g-arantira dd merveilleux souvenirs
photog raphiq ues.
ITALIANO
La ringraziamo per aver acquistato COSINA CT-1O/CT-2O.
La COSINA CT1 O/CT-2O d un apparecchio fotografico reflex di elevata classe con la caratteristica di
prendere immagini con un sistema di esposizione automatica con la priorita dei diaframmr.
Si sceg.lie semplicemente  il diaframma e la camera mette a fuoco autbmaticamente I'esposizione.
Dopo di che si mette a fuo.co e si preme leggermente lo scatto. Questo e tutto per la be'lla immagine.
Vi preghiamo di leggere attentamente la istruzione d'uso per avere meraviglioie foto di ricordo."
ESPAfrOL
                    porla compra                                                   la                               de                                   c6mara                                       COSINA                                                     CT-1o/CT-20,                                                             una cdmara                                                                                                       (reftex de                                                             SLR!9un 9111"_lsolo.obJetivo).l?!,9f,aciascompacta,                                 ligera y                                              que                                           clase                               de                                                 superior,                                                                  realiza exposiciones                                                                        por el                                                                                        sistema
autom6ticode preferencia de apertura.Ud. solo tiene que seleccionar'el diafragnia  (la cdmara
ajustard, automdticamente, la exposicion ,)enfo-car y pulsar, suavemente, el boi'6n OispariOor.
Con esta c6mara todo el mundo,pqedg tomar foto!rhfias excelentes.
Se recomienda leer detenidamenie este MANUALbe tTSf nUCCIONES para obtener el mejorresultado con esta cemara.

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   SPECIFICATION
   Camera Type: 35mm Automatic Exposure Single Lens Reflex camera.
    Fifm Formal; 24mm X 36mm.
   Lens Mount: K type bayonet mount. Flange back focus distance: 45.44mm.
    Shutter: Magnetically controlled metal focal plane shutter with shutter speeds from
   4-1/1000th sec. and B (Bulb) Flash synchronisation "X" aIl/100 sec.
     Electrically controlled selftimer of 1O-seconds duration with  f lickering lamp and an
    emitting electronic tone. (CT-20 only)
    Viewfinder: Fixed pentaprism type
    Magnification:-0.9  (with f:50mm lens)
    Field of view: 93o/o for both horizontal and vertical. Focusing with horizontal split-image
    center spot with surrounding microprism collar on matte type fresnel screen.
    Automatic system: Operating range: EV 2-EV19 (with ASA 100 and lens of F1 .4-F22\
   TTL, aperture prefered, open-aperture measurement with a SPC.
    Centerweighted measurement. Exposure level control: Eack light switch (CT-20).
    Film Speed Range: ASA 25-1600
    Film Advance: 135" rotation of wind lever with standoff angle of 30"
.   Shutter Release: Electrically controlled solenoid switch. (CT-20 only)
    Film Counter: Progressive type. Automatrcally resets when the camera back is opened.
   Power Source: 2pcs. S-76, A-76, G-13, 1 .5 volt silver oxide or alkaline.
    battery. Battery test with LEDs in viewf inder.
    Dimensions:  1 33X85x4Bmm (Body only)
   Weight 4509.
    Attachable accessories: Cosina Speedlight Auto-1 60, Auto-220.
                             (Subject to change without notice.)

ENGLISH

(2) LOADTNG THE BATTERTES
Two 5-76, A-76, G-13, 1.5 volt batteries are used in this camera.
1. The battery cover can be opened by turning it anti-
clockwise with a coin.
 2. Load the two batteries correctly according to the
 polarit indications on the battery cover.
 3. Turn the battery cover clockwise to screw it back into                                   Fig.3
 position.
HOW TO CHECK THE BATTERIES
Set the selector dial to "AUTO", depress the shutter releasebutton half way and any one of the L.E.D. lamps in the view- ffi
finder should light when the batteries have sufficient current
to operate the camera.
lf none of the L.E.D.'s light up the batteries need replacing.     www.butkus.us            Fig.4


Note
Make sure that the batteries are wiped clean of any finger marks, grease or oil, before ,.insertion.  M
Take the batteries out when your camera is not in use for a long or indefinite period. The
batteries should last for approximately one year.  lt would be advisable after this period to
replace your batteries with new ones.

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4. Turn the film advance lever and wind the film round the
take-up spool until both perforations are enaged on the
sprockets.
5. Close the back cover and press  it firmly so that it locks
into position. Tilt up the rewind crank and turn in the direction
of the arrow to take up any slack in the film.
6. Advance the film until number one, that is the mark
between 0-2, appears in the frame-counter.  lf the film has
been properly loaded the rewind knob will rotate in an anti-
clockwise direction when the film advance lever is operated.                                Fig.7





                        Fig.8                             Fig.9                         Fis.1O

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(6) SETTTNG THE EXPOSURE
The light emitting diodes on the teft-hand side
 of the viewfinder will light the moment  first
 pressure is taken on the shutter release button.
This indicates that the camera has already
adjusted itself for correct exposure.
De Press the release button right down to take a
correctly exposed picture.
The CT-lO/CT-2O is an aperture-priority camera.
Set the aperture and the CT-lO/CT-2O
 automatically  alters the shutter speed to obtain
correct exposure. When using a high number
aperture the CT-1O/CT-2O will set aslower
 shutter speed. When using a low number
aperture the CT-1O/CT-2O will set a faster
shutter speed.F When the optional automatic flash (COSINA                ffi
Auto 160 & Auto-220) is fitted and ready for
use the L.E.D. lights.
Red'LED Overexposure  (turn the aperture
ring to a higher  f number).
Green    LED Hand held exposure from 1/30th -                                    Fig.13'l /1000th secs.
Yellow LED Slow speeds of under 1/30th sec.
are being used turn the aperture ring to a
lower f number until green LED lighfs, or use
flash or a tripod.

ENGLISH
(7) SETTTNG THE APERTURE
The aperture of the lens controls the amount of light passing through the lens to the film
surface.  lf the scale of the aperture ring is increased by one (t2.8 - f4) the amount of light
 is halfed as indicated in the'following.t5ble. The Cosind cT-lo/CT-2o automatically  set"the
correct exposure, all you have to do is set the aperture. The following table will give you a
guide with regard to the best aperture to use in different light conditions.


1;Aperture 2  2.8  4  5.6  g      ll     16
             ,'Q,a>':9                                .:, (J2: Lisht o-^ou:'o o                                         l /2 1/4 1/g 1 /16 1 /32 I loq            Ratio  I
 The aperture ring usually has gradations marked as above, taking F2 lens.
                                                  Fis.14     Light                    A pertu re
                                                                  Bright Indoors           2to 4
                                                              Fine Outdoor             'Bto'11
                                                   Mid-summer Beach
                                                         Snow-covered               1'1 to 16
                                                               Mountains

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(8) HOLDTNG THE CAMERA
1. Rest the camera on your left palm so you can turn the lens focusing ring with yourthumb and forefinqer.
2. Use you.r right-Fand to hold the camera lightly, with your right forefinger resting tighily
on the shutter release button.
3. Press your left elbow lightly against your body qnd look into the view-finder, steading
the camera against your face. The right arm should be relaxed while holding the cameia.
Note
Use a tripod for long telephoto lenses or slower shutter speeds.





                         Fig.15

                                                            Fig.16

ENGLISH
(e) FocusrNc THE CAMERA
Focusing  is taken from the small round area in the
centre of the view-finder screen. The inner circle is
a split image range-finder and is surrounded by a
microprism. The split-image range-finder divides the
image horizontally. When the two halves are brought
into exact alinement, correct focusing has been
obtained. The outer microprism conveys a broken,
shimmering inrage when out of focus and becomes
clear and sharp when correct focus is reached.Focusing the Camera Cont.                             ffi
Accessories, such as a rubber eye-cup, eye piece
correction lens holder, angle-finder and view-finder,
magnifier can be used to assist focusing. Any
photographic shop will advise you correctly on the
use of these items.                                                               Fig.17





                                                      Fig.18                 Fis.19

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(1O) RELEASTNG OF THE SHUTTER
 When you depress the shutter release button the
 aperture  is automatically stopped down before
exposure and the shutter is released.
                              \r
                                                                               Fig.2O

(11) REW|ND|NG THE FILM
To rewind the film after the last exposure:
 '1. Press the film rewind button until it is locked.in the
depressed state.
2. Tilt up the rewind crank and turn in the direction
of the arrow.                                                                         Fig.21
3. When the film is completely rewound the rewind
knob will suddenly turn very easily.
4. Pull the rewind knob against the resistance to
open the back.
5. Take out the film
6. Press the rewind knob down and close the back
cover.                                                                           Fig.22
Note
Avoid direct sunlight when unloading or loading the film. lf the film advance lever stops
midway and the film rewind button will not remain in the depressed state, then rewind the
film while keeping the rewind button depressed with your finger. Never open the back
cover until the film is completely rewound.

ENGLISH
(12) THE "8" (BULB) SETTING
On the "8" setting the shutter remains open while the
 shutter release button is depressed and closes when
the shutter release button is released. Use the "8"
 setting to take a night scene etc. lt is advisable to use
a tripod and cable release when using this setting.


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                                                                             Fig.23
(13) TAKTNG PHOTOGRAPHS W|TH THE SELF-T|MER (CT-2O)
1. With the self-timer switched on the moment the shutter
release button is pressed the timer comes into operation.
This indicated by the red light on the front of the camera
begining to flash also by an emitting electronic tone.
The self-timer will delay the shutter release by approximately
1 0 seconds.
2. lf you want to cancel the self-timer after having pressed
the shutter release button, return the self-timer lever to its
original position.
3. Atter iaking your picture return the self-timer lever to its
original position.
                                                                                Fig.24
Note
lf you do not return the self-timer lever to its original position the self-timer will still be in
operation the next time you take a picture.

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    (14) FLASH PHOTOGRAPHY
    When using the Cosina Auto 160 and Auto
    220 flash which is designed exclusively for
     the Cosina CT-IO/20, you can take a picture
     with the selector dial in the auto position.
   When the flash units is fully charged, the red
     "F" in the viewfinder lights and the shutter
    speed is automatically set to 1/100 sec.
   When using any other make flash quns set
     the selector dial to the "X" positioni
   On Cosina CT-2O an emitting electronic tone
    can be made by pressing the shutter release
     button half-way down.
    NOTE: The aperture ring should be set
     according to the instructions on the flash gun
     being used.                                                                       Fig.25

    (15) EXPOSURE COMPENSATTON (COS|NA CT-2O)
     Automatic Exposure Compensation by shooting Against
     the Backlight
   When you photograph a person standing in a room
     with a brightly  lit window at his back, the subject will be
    underexposed. In case of such shooting against the
     backlight, press the shutter button while depressing
    the exposure compensation  switch. You can properly
    expose the main subject.                                                            Fig.26
15

ENGLISH

Exposure Compensation by the ASA Film Sensitivity
An ,ASA film sensitivity half as much as another denotes
that twice the amount of light is necessary for correct
exposure as com'pared with the other film sensitivity.
With this in mind; you can compensate for exposure by
changing the ASA film sensitivity. For example, when
using an ASA 100 film by shooting against the backtight,
you can multiply four times the amount of light striking
the film for shooting the main subject by changing the
ASA sensitivity scaie to 25.

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(16) DEPTH OF FTELD
When the camera is focused at a certain distance
there is an area on either side of the set distance
which will also be in focus. This is called the "Depth
of Field".
The Depth of Field is affected by the following:-
1. The smaller the aperture (as the aperture decreases
the "f" number increases eg.t/2 is a wide aperture
and t/16 is a small aperture) the larger the depth of
field.
2. The longer the focused distance the larger the
depth of field. The area in focus beyond the set distance                                                                    Fig.27will always be larger than the area in front of the
focus distance.
How To Know The Depth of Field Range
A depth of field scale is engraved on every lens when the camera  is, for example, focused
on the s_ubject at a distance of three metres, with the aperture set at f/8, the subject located
within "B marks" on both sides of the datum line (approximately 2 metres and 5metres)  is
the depth of field area. Subjects within this distance will be in focus.

ENGLISH

(17) INFRARED RAY MARK
The shOrt red line on one side of the datum mark is
the inf rared ray mark, which is used to correct the
focusing when using infrared film and filters. The
infrared ray has a longer wave length than the
visible light range, therefore, the focusing is displaced
being indicated by a short red line.                                                     Fig.28
 Infrared PhotograPhY
1. Attach an infrared filter to the camera.
2. Focus the lens using the red line.
3. Set the exposure according to the description on
the film and release the shutter.
 It is probably impossible to focus the camera
with the inf rared filter in position. Either focus with
the filter removed and then replace  it or use the
distance scale.
(18) CXANGING AND REMOVING THE LENS
Depress the lens release button and turn the lens
counter-clockwise until it stops. The lens will now
move freely from the body.
 Fitting the lens
Match the red point on the camera body with the red
 point on the lens barrel. Fit the lens to the camera
and turn  it counter-clockwise until it locks into position.     www.butkus.us
The Bayonet Mount
 Your Cosina CT-1O/CT-2O camera is equipped with a "K"                                                                                Fi9.30 bayonet mount and will except all lenses with this fitting.

ENGLISH
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     Note
    Be sure to lock the lens completely. lf the shutter is
     released and the lens is not locked into position an
    accurate exposure can not be obtained.





                                                                                         Fig.31
    (19) CNNE OF THE CAMERA AND MAINTENANCE
     1. Under no circumstances touch the lens           high temperature eg. on the back shelf or on
     with the hand, use a blower brush or lens           the seat of a parked car.
     cleaning tissues to remove dirt or grease.             4. When storing the camera remove the
     2. Shock, moisture,  salt, sand, etc. can cause         battery and keep the camera in its case.
    damage to your cameia. lf you must take your      Store in a dry place.
    Cosina CT-1O/CT-2O camera on to the beach          5. lf the camera  is to be stored for extended
    remember that sand gets everywhere so keep       periods take  it out periodically and operate
     the camera well wrapped up and in a clean                   it a few times.
    sealed bag when not in use.                             6. Avoid storing the camera where abrupt
     3. Avoid putting the camera anywhere when        temperature changes take place.
    strong sunlight would cause an.abnormally




19