Directions for using Canon Model III-A and IV-F
Foreword The "CANON" Camera you have just purchased is a precision camera with an exquisite "SERENAR" lens, made Irom selected materials by our master crattmen and both the body and lens have undergone a series ot strict optical and mechanical inspections to insure retiable and' ellicient per/ormance. Carelul handling and Intelligent use is highly recommended in order to obtain excellent service and perlect photographic resulls.
INDEX Page Winding Knob advances the film and winds the shutler at the same time (advance only one frame ) 2. Exposure Counting Dia!- calibrated up to 36 . 3 . Exposure Counting Index . . . . . . . 4 . Rewinding lever (Set to R when rewinding film. Set to A be fore reloading another roll of film) . . . . . 8, 5 . Slow Shutter Speed Dial for slow speeds, 1 full second to 1/ 25 sec . . • . . . . • . . . . . . . . • . .19, 6. Rangeflnder Window 7 . Distance Scale . . . . . . . . . . . . . . . . . . . 8 .
Page Lens Focusing lever with infinity catch and coupled with rangefinder. . . . 15 11. Shutter Release l3uUan 23 12 . High Shutter Speed Dial for high speeds, 1/25 to 1/1000 sec . 18 13 . Accessory Clip to hold Special Viewfinder, Universal Viewfinder, etc. . . . . . . . . . . . . . . . . . . 47 14. Range-View Findt r Eyepiece combined . . . . . . . . 15, 23 15 . Rewinding Knob to rewind the exposed film back into original film magazine or cartridge after position R has been selected 11, 32 16 .
1. How to load film Open the Baseplate by giving the Lock Knob a half turn from Close to Open, and pull out the Takeup Spool and the Canon Film Magazine . Loading the Canon Film Magazine with 35 mm {ilm is illustrated on pages from 36 to 39. Canon Film Magazine The Canon camera can be loaded with 35mm Daylight Loading Cartridge of any make commercially available. If desired to use 35 mm bulk film however, the Canon Film Magazine should be utilized.
Slide the ready-cut leader end of film under the clip of the Take-up Spool , facing the glossy side of the film towards the spindle of the Spool. Then push in about two perforat ions by pressing it against the spindle with your thumb. Take-up Spool Film Cartridge Make certain that the perforated edge of the film Iies flush with the flange of the Take-up Spool. Film Leader Do not wind film around the spindle of the Take-up Spool.
The Rewinding Lever should be kept in A Cadvance) at all times. ,,,J~t--- I/. inches Two perforations Holding the Film Magazine in your left hand and the Take-up Spool in your right, draw out the film leader about 4 inches or two perforations. Film leader drawn out more than necessary is the main cause of difficult loading , 8 This Lever is shift to R ( rewind) only when the rewinding film into its original Magazin e.
Insert both the Film Magazine and the Take-up Spool gently all the way down into their proper chambers, facing the emulsion (dull ) side of the film towards the lens . Sproclce~s The red line indicates the film path when properly loaded.
Pullout and turn the Rewinding Knob slightly while pushing the Magazine down so as to make sure that it is seated properly into the fork in the Magazine Chamber . Then turn the Winding Knob and make certain that the a little sproch,h catch the perloralions of the film .
Now replace the Baseplote by hooking it on to the lug and turn the lock Knob back to Close . Next raise and turn the Rewind ing Knob towards the direction of the arrow leaving the Rewinding lever at, A, until hard stop is felt in order to tighten the relaxed film in the magazine. Once the camera is properly loaded the Baseplate should never be opened until the total roll of film has been used and the film rewound into its original magazine.
Turn the Winding Knob and release the shutter two times in order to advance the exposed portion of the film during in loading. Prior to the second releasing of the shutter, set the Exposure Counting Dial to zero ( 0 ) by turning it counter-clockwise with you fingernail, catching one of the lugs o,n the Dial. The ~"posure Counting Dial should never be moved after it is $et until new film is loaded.
IMPORTANT : Each time the Winding Knob is turned the Rewinding Knob rotates in a reverse direction . This indicates that the .film is properly passing to the Take·up Spool for the next exposure . case the film If this, however, is not the leader should be wound off from the Take-up Spool and the film reloaded by closely following the same routine explained in the foregoing pages .
2. Ilow to operate the camera Take the lens Cap off . Holding the front milled ring, pull the lens Barrel straight all the way out and lock it into position by gently turning it to the right until you come to a stop . SERENAR 50mm is flo-collapsible f : 13 len s Turn the Winding Knob compete turn until it stops. Each tim@ the Winding Knob is turned the Exposure Counting Dial automatically registers th@ exposures.
Focusing Hold the Camera with both hands and pull it against your cheek. focus the lens to the subject by sighting through the Range-View Finder Eye- piece while rotating the lens Focusing lever with your left fore-finder until the two images coincide. 15 The Lens Focusing ~ever is released from the Infinity Catch by depressing the knob on the Lever.
Viewfinder Image Out-of-Focus The Lens is focused for a distance shorter than .'that from the camera to the subject. The Lens should be rotated in a direction to increase the distance. 16 Out-of-Focus The Lens is focused for a distance greater than that from the camera to the subject . The Lens should be rotated in a direction to decrease the distance.
Distance Scale The figures lying opposite the Distance Index Mark indicate' the distance from the film plane to the subject focused upon . The figure on this Seale is needed 10 derive Depth of Field. In Cor reel Focus Distanc.
Select a desirable shutter speed and lens opening from exposure meter readings or from directions :furnished by 111m manufacturer. When tha Canon Flash Unit is used with the camera the settings should be determined according to the table furnished with the Cailon Flash Unit or to the table provided by flash bulb manufactur-er. High Shutter Speed Shutter speed of 1/ 25, 1/ 40,1 / 60,1 / 100,1 / 200,1 / 500, or 1/ 1000 of a second is desired, the High Shutter Speed Dial is used .
Slow Shutter Speed When shutter speed slower than 1/ 25 of a second is needed the Slow Shutter Speed Dial is used. Turn and set the Dial to any desired point between 1/ 25 and 1 second . Lifting the Dial is not necessary as in the I;~ ase of the High Shutter Speed Dial. The Slow Shutter Speed Dial provides the speeds of not only 1/ 25, 'ie, 1/ 4, 1/ 2 and I second as indicated but also any intermediate speeds.
When the High Shutter Speed Dial is in use the Slow Shutter Speed Dial should be set to the red figure 25, and when the latter is in use the former should be set to the red figure 25-1. Consequently, both Dials are set ta 25 when 1/ 25 second is needed ~ This procedure should be strictly observed, for if neglected it not only affects the shutter speeds but also the flash synchronization. Detail explanations on flash synchronization are given on pages from 39 to 45. In.
Lens opening Relative exposure time i~ 1.8 1- 2.0 1.2 2 .8 12 : . 2 .4 4 . 0 1_~~ 1 11 3.8 / 4.9 9.7 I 20 37 16 79 Through the table one can readily see that large lens openings are indicated by lower figures, and vice versa. When the Scale is moved to the next highe, figure the time of exposure should be doubled - in other words, the shutter speed should be reduced to one hall. And when moved to the next lowe, figure the shutter speed should be doubled.
Depth of Field Scale The range of Depth of Field lies between the two same lens opening figures provided on both sides of the Distance Index Mark. When one subject is sharply focused, there is a finite range of sharpness extending to the foreground as well as to the background of this sharply focused distance which is also acceptably in focus . This range of sharp· ness is known as the Depth of Field of the lens and depends on the relative lens opening and the distance to the subject focused upon .
Composition and Exposure Hold the camera as shown in the picture; both elbows pulled against your body . Compose the subject by sighting through the RangeView Finder , keeping your eye close behind the eyepiece . Make sure that the circle of the Rangefinder image is at the center of the focused subject. When the subject is properly composed, gently depress the Shutter Release Button . Shutler Release BuHon will not operate, unless the Winding Knob is given one complete turn . Double exposures prevented.
There are two ways to hold the camera for Vertical Pictures First Way : Hold the camera in hand with thumb right Shutter Release your right on the Button and the right elbow pulled against your body.
Second Way : Hold the camera as described in page 19 and rotate it to a vertical position, placing your left elbow against your steady support.
Range-View Finder Magnification Selector When easier and extremely sharp focusing is desired set the Selector to 1 .5x by which the subject is magnified 1 .5 times. Furthermore, the Selector selects three different magnified Field-of-View F, 1 x, and 1. 5x - . each of which corresponds to that of " Serenar " lenses with tocal length of 50 mm , 100 mm , and 135 mm, respectively . If, however, a subject lies Field-oF-View of the lens 50mm . within a certain distance the Field.oF-View of the Finder at 3 .5 Ft.
Although some parallax is attended with, its effect in an actual photography is neglible. When set to 1 x the variation of Field-of-View of the Finder and that of the lens with focal lenfJfh of 1 OOmm at various distances will be as shown as in the diagram . It can be noticed that when subject distance is less than 13 ft a Special Viewfinder with parallax compensating adjustment must be used . Field-of-View 01 the Field-aI-View 01 the linder at 13 Ft.
Set to 1.5x for lens of 135 mm focal length, parallax at different distances will be as shown as in the diagram . Subject distance less than 14 ft, parallax-adjustable Special Viewfinder must be used _ Field-of-View of the lens ( 135 mm). Field-of-View of the finder at 5 ft . Field-of- View of the finder at 13 fi. Field-of-View of the finder at infinity. 28 r ------------- i ,-----------=---=--=.,•...j I 1 'J I, ' I, ~ I: 1'1: I', ~ ====-_-=-_-===-==_1 : 1: .L _________ .
Double Exposures Turn the High Shutter Speed Dial counter-clock wise with your left fingers while depressing the Shutler Release Button with your right forefinger. When and the Dial somes to a stop click is heard release your fingers from the Button first and then from the Dial next. Now the shutter is completely wound without advancing the film as when the Winding Knob is turned . Repetition Shutter speed may be changed if desired .
Practice these steps thoroughly before loading' film. o Remove the Lens Cap . @ Pullout the Lens and lock it. f : If, is no-collapsible o 30 Set the Shutter Speed Dial. See page 18, 19 and 52 o Focus the Lens to the subject.
e Turn the Winding Kneb., (~ 0 f( See page 14 e Compose the subject. • See page 23, 24 and 2.5 Set the Iris Diaphragm Scole. See page 20 @ And r,nally. depress the Shutter Release Button gently . tiJ See page .
3. How to unload film Unloading When reaching the end of the film roll, tILe Winding Knob will no longer turn . Do not force it but stop there! And shift the Rewinding lever to R, raise the Rewinding Knob, and rewind all the film into its original magazine before opening the Baseplate . During the rewinding operation the Shutter Release Button turns, and stops the moment the film is pulled off trom the Take-up Spool.
4. How to interchange lenses Dismount Hold _the camera flat in your left hand and grip the base of tile lens with your right. Give a slight jerking motion at first to loosen the lens as it is firmly screwed into the lens Mount. After loosened, unscrew the lens gently off the camera. lenses having Focusing levers must be locked in the Infinity Catch .
Mount Unscrew the lens base cover from the lens intend to use, and then hold the camera in the same manner as described in the preceding page N e-xt introduce the lens to lens Flange of the camera . Search the entrance of the thread at first by slightly turning the lens counter-clockwise and then screw it gently into the lens Flange until you come to a stop. When reaching this point, force fraction of an inch farther so that the lens be firmly mounted.
5. How to load film into the Canon Film Magazine The standard Canon Film Magazine is designed to hold 5 ,%1 feet of 35 mm film which is sufficient to make up to 36 exposures, 24 x 36mm in size . This cylindrical Magazine consists- of three parts: Center Spool, Inner Shell and Outer Shell . To disassemble the Film Magazine turn the Inner Shell while pressing the Bullon until its groove overlaps with the Safety Hook.
Insert the short tapered end of the film into the slot of the Center Spool, facing the emulsion ( dull ) side towards the spindle of the Spool. Wind film 5 }:f ft in length on the Center Spool moderately tight for 36 exposures, 3 }:f ft for 20 exposures, 3 ft for 18 exposures, and 2 ft for 10 exposures . Do not touch the emulsion side of the Film when winding.
To assemble the Magazine, first insert the Center Spool into the Inner Shell with beginning of the film lying out from the Film Chamber Slot. Nex~, introduce the Inner Shell together with the Spool into the Outer Shell with both Film Chamber Slots superimposed . When the Inner Shell is completely inserted turn it counter-clockwise until the Button clicks into locked position.
When the Film Magazine is properly loaded and positively locked draw out the 111m and trim it as illustrated below, giving special attention to the red circled area .
6. Built-in Flash Synchronize,. The Flash Synchronizer concealed within the body of theCanon Camera Model IV and IV-F are so assembled as to synchronize precisely with not only flash bulbs of focal plane type, but also of all peak types (made nat for focalplane shutter but primarily for between-the-Iens shutter). Speedlight unit can equally be used provided the unit has a device with which discharge timing can be delayed between the range of 15 and 100 milliseconds*.
occur simultaneously through the counter-clockwise rotation of the shutter shaft to which the cam x is connected; thus the High Shutter Speed Circuit as indicated in red line in the diagram below is established and flash bulb will be discharged with perfect synchronization with the shutter. The relation of synchronization between the movements of the shutter and the illumination of the focal plane bulbs are outlined in charac teristic curves on next page.
~ I-ligh Speed Synchronization ~ f-----l-----4-+--+-----+=--~"""'!--+-+--+ )- 41
Slow Shutter Speed Synchronization In the case of peak type bulbs, due to their characteristics, the picture frame must be totally opend at a time of discharge in order to obtain perfect results. Therefore, the shutter speed dial should be set to 1/ 8 sec for bulbs of this type . Consequently, the circuit will be as shown as in the diagram below.
Slow Speed Synchronization 5r-~-r--H-~~--~ln~r-~-+--r-I~I~.~I--+--r-1'--~I--r-~ ~ 11 1--+--j--1+-+-+ 5 ~--t\t--+-+- F: Gf:SM; Syl-SF, etc. _ \ M- Gf-No. 5, II, 22, 22B; Syl-No. 0, 2, 41--+-+-H--+-+-,1--\t---j--1- 28, 258, Press 25, Press 40, etc. s= Gf-No. ~ 50; Syl-No. 3, 3B, etc. 31; Syl-FP 26, 2A, etc. Fpd Gf-No. 6, _ ~ 31--+_-j--1+-+_~~~=r.~~t--+_+_~-+_4-_1--+_+--j_~ ., :;; 3' V:c-+.d+--t-\\-t--+-+-+--f-+--+-+--+--+---+21---I-+--H:::rF:/' 1r-- I/t pejk '\ '"'I. 1 _ _ "'\ IF.
Speed light Synchronization For speedlight photography there are two speeds to which the shutter speed dial can be set, with proper delay timing to synchronize with the shutter .- If 1/ 25 sec . is used a delay control of the speedlight unit must be adjusted to lie within the range of 45 and 50 milliseconds ; while 1/ 8 sec . is des ired it must be adjusted to be wi hin the range of 15 and 100 milliseconds . The above figures can be derived from characteristic curves given on next page . tively .
XI . X2 s c HI ~. I c J X'• Xb ii" 4 II il 'I I I 1:1 I, I I: ~ c-- I I II Ii Ii! 10 o ~ E E 10 ~ 20 E ~ .! , 40 Vi ij I .'Ti me ~ m. sec. I 40-'5RO.~O 90 100 110 120 130":'~tt.lbO 170 - _.- 1.---1--1-1---- ---I-- -- r-- ~ '\ ~E 30 ~.l) ~ II 30 Ooe E . 20 '"~ P:= .. - r-- -- - - I~; ~ -<'. '\~O~<>- ~ 0.,0". I~C<' ~~ ~~:-- ~'? ~~ ~.. ~- -,-r---I----I----p'----"-; -- - -":. - - I - " I - - -- 1--- -- ----+-- ~- ~;' -_~- ..
Canon AUTO - UP The Canon AUTO-UP is a closefor use with the Serenar 50 mm lens. Subject ly ing between 22 and 40 inches can be accurately focused with the range-finder of the camera. Unscrewing the lens for inserting intermediate ring is not necessary ; simply mount the AUTO· UP onto the lens. Ideal for photographing flowers , insects and other small objects.
Canon UNIVERSAL VIEWFINDER The Canon UNIVERSAL VIEWFINDER is a precision instrument through which an exceptionally sharp image can be viewed. is variable length stops of 35 mm offer particular Parallax compensating parallax correction . pensable item for scale, calibrated The Canon one having for in positive erect Field of view lenses to and with focal 135 mm . Click setting at any focal length marking .
Canon CAMERA HOLDER The Canon CAMERA HOLDER is designed to hold the camera sturdy in balanced position when using a tripod . The 0 camera can be easily seated either vertically or horizontally. Spirit level assures accurate compositon of subject. Additional tripod sockets be used ing the for may mount- Canon Side lighting Units. An ideal for photo accessory c lose-up, and long teleex- posure shots.
Canon FLASH UNIT Model B- II The Canon FLASH UNIT Model B-II is designed for use with all models of Canon cameras or cameras similar to the Canon . Synchronizes accurately to from ' /00 to '/200 second. all shutter Both speeds medium and bayonet base flash bulbs can be used. Simply mount the Unit into the Accessory Clip and its Battery Case into tripod socket of the baseplate . Ideal for black-and-white or color pictures to fill in shadows outdoors or to take flash pictures indoors .
Legend x. y. z. A B. e. D. E. 50 Cam-connected direct to shutter shaft (shaft of High shutter speed dial ). Lever - -set in free into its axis . Lever-pulled against stopper with fine spring . Terminal-to be connected to synchronizer . Terminal-to be connected to flash unit . High shutter speed contact-closes instantly with its own elasticity when levery is freed the moment the cam x begins its rotation.
F. Automatic circu it selector - coupled with slow shutter speed dial. When this dial is set to ~5 for high shutter speeds the selector contacts E and high shutter speed circuit will be set up; when set to 8 or beyond, the selector will be isolated from E automatically and slow shutter speed circuit will be set up . G. Slow Shutter speed contact- closes instantaneously when lever z is kicked by cam x after about 2/ 3 of its total rotation.
I ~Iash iuib""l , - - - - - - - - - - - - - - - - - - - - , I ! !_ I ri A"/ . II ~sh . U~~ ~ L i Shutter release button_ S'O'F-:'~ D x ~!? -=- ,I i Mounting bracket . Camera -Sh~tte, i 4,ate spring • I. I c.ompletely wound. _ _ _ ~ Schematic Diagram of Canon Mode/' IV and IV-F • u. S. PAT PEND .
BUILT-IN SYNCHRONIZER The SYI\:CHRONIZER, thorcughly checked and accurately ~et before leaving the factory, is of a preci5ion tuilt rrechcni~m u5ing the very best materials. All e'ectrical contacts are of p'atinum-iridium alloy in order to attain 'lifelong maximum conductivity. Under any circumstances, the hou5ing of the SYNCHRO- NIZER should never be or:;ened and the rrechcnism tampered with.
Canon Camera Co., Inc. Tokyo. Japan No. 189 51.' E5-3-52 Daito Printing Co.
