Chinon CP-9AF autofocus 35mm camera

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This page is copyright by ,   M. Butkus, N.J.
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PART ONE     PART TWO

 

EXPOSURE MODES
1. Three Stage Programmed AE Mode

The CP-9AF is designed with a three stage program which gives you greater photographic versatility just by selecting a program based on your photographic needs.

1 ) P (Normal Program)--For photographing general subjects. Select "P" if you cannot decide whether to use
    P-Action or P-Creative (Fig. 44).

2) PA (Action Program)--This program minimizes camera shake and Is designed to be used when photographing      hi-speed" (moving) subjects. Suitable for telephoto lenses (Fig. 45).

3) PC (Creative Program)--This program gives priority to the lens aperture which affects the depth of field. This mode is convenient when taking pictures of hard-to-focus subjects and when using wide angle lenses (Fig. 46).

The CP-9AF incorporates three exposure programs. Each program is designed to react according to the choice of program emphasis desired (general, action, creative) and will maintain this specific character throughout the zoom range of the lens in use.

[DIAGRAMS]
(A) F-No.
(B) TTL strobe auto-mode
(C) Action
(D) Normal
(E) Creative
 

2. Aperture Priority AE Mode (A mode)
In the A mode, the camera automatically computes the required optimum stepless shutter speed based on aperture and the surrounding lighting conditions. This mode is ideal for AE photography where precise control of depth of field is desired.

1 ) Push the "A" comer of the exposure mode selector. Mode indication "A", a shutter speed and an aperture number indication will appear on the LCD panel if a C-AF mount lens is used (Fig. 47). On other lenses, no aperture number will appear on the LCD panel.

 

2) Select an aperture setting by pushing the UP/DOWN button.
 

  • The aperture setting may be made at any position ranging from the maximum aperture (wide open) on the lens to its minimum aperture in 1/2 step increments.
  • On non-C-AF lenses, the desired aperture is selected by rotating the aperture ring on the lens barrel.

 

 


(Over Exposure)
If the lens F stop or the aperture size is too large for the lighting conditions, the "2000" on the LCD data panel and in the viewfinder will flicker When this happens, select a smaller aperture or use a film with a lower ISO rating (Fig. 48).

(Camera Shake Warning)
At any shutter speed setting from 1/30 second and slower, the shutter speed indicator LED within the viewfinder changes its Color from green to orange, alerting you to watch out for possible camera movement. It is advised to shift the F-No. setting closer to its maximum value for a higher speed or to use a tripod. As another alternative, use of an electronic flash or a film with a higher ISO rating might eliminate the problem (Fig. 49).

(Under Exposure)
If the computed shutter speed is even longer that 8 seconds (semi darkness condition), the red under exposure indicator in the viewfinder and 8" on the data panel will flicker. Open the lens diaphragm by pushing the UP/DOWN button (or rotating the aperture ring on non C-AF lenses), use a film with a higher ISO rating or use a flash.
 

F-No. Setting Guidelines with ISO 100 Films
 
 
 Lighting condition
Aperture (F - No.)
Outdoors, sunshine
f/8-27
Outdoors, cloudy
 f/3.5-5.6
Indoors
f/3.5-4.5

3. Manual Exposure Mode (M Mode)
The aperture and shutter speeds of the CP-9AF can be completely manually controlled. This mode is ideal for photography which requires total creative control over the exposure.

1 ) Push the "M" corner of the mode selector button (Fig. 50).
2) Choose a preferred shutter speed setting by pushing the UP/DOWN button.

3) Choose an aperture setting by pushing the UP/DOWN button while pressing the AE lock button (Fig. 52). The setting may be made at any position ranging from the wide open aperture to the minimum aperture in 1/2 stop increments.

4) The metered shutter speed will light up and the selected shutter speed will blink in the viewfinder. Set the shutter speed and/or aperture so that the shutter speed LED lights coincide in the viewfinder.
 


4. EV Compensation
The EV compensation mechanism serves to provide AE photographs (in any of the programmed and A modes) that have been made darker or lighter in tone than available under the photometered auto-exposure. In addition, it also serves very effectively to correct the exposure setting for shooting against backlighted or spotlighted conditions.

(With DX-Coded Films)
1 ) Push the AF mode and /time buttons simultaneously The film speed and EV compensation index for the film will then be displayed on the LCD panel (Fig. 53).

2) Select a preferred EV compensation by pushing the UP/DOWN button (Fig. 54).

 
  • The EV compensation setting can be set at any index ranging from -4.0 to +4.0 EV in 1/2 stop increments.
  • "+" signifies an overexposure and "-" an underexposure.
  • Either a plus (+) or minus (-) mark will appear on the LCD panel when any EV compensation has been selected.

 


(With Non-DX Films) When non-DX films are used, no EV compensation index will be displayed. Manually provide the necessary compensation by operating the AF, ISO/EV and UP/DOWN buttons to set the desired film speed setting or any over or under exposure compensation.
 

EV Compensation Indices for ISO 100 Film
 
Film Sensitivity
Compensation Index
ISO 25
+2 EV
ISO 50
+1 EV
ISO 100
0
ISO 200
-1 EV
ISO 400
-2 EV

5. AE Lock
Under normal circumstances, the CP-9AF will produce perfectly exposed photographs due to the integrated automatic exposure circuitry. However, some lighting conditions might occur that could misguide the system such as subjects with a very high contrast or strongly backlit scenes. In such cases, the AE lock (exposure memory) system should be used.4.butkus.org

1 ) By operating the mode selector, select either the A- or P- (i.e. P. PA, or PC) mode setting (Fig. 55).
 

2) Initially compose the picture so that the subject to be properly exposed fills up the entire viewfinder screen.

3) Push and hold the AE lock button and recompose the picture. Push the release button to take the picture (Fig. 56).

4) Alternately, as long as the release button is held lightly down, the AE lock will be sustained even if you remove your finger from the AE lock button.
 
 When shooting in an AE lock configuration, use of the manual focus mode (MF) is advised.
 

6. Multiple Exposure
The CP-9AF is equipped with an unlimited multiple exposure provision.

1 ) Set the main switch to the ME position while holding the ME lock button down. The film counter frame on the LCD panel will blink to indicate a multiple exposure mode (Fig. 57).

2) Push the shutter release button to take a picture. No film advance will take place, but the shutter will be retensioned. The film counter will not advance until all of the multiple exposure segments have been completed.4.butkus.org
 


7. Automatic Exposure Bracketing
AEB Exposure (in any programmed AE mode or aperture priority mode A):

The CP-9AF has been designed with AEB exposure capabilities that enable consecutive pictures with the exposure automatically varied over three full shutter speed settings.

1 ) Select either a programmed AE mode (P. PA, or PC) or an aperture priority AE mode (A) by operating the exposure mode selector (Fig. 58).

2) Slide the main switch to the "C" position for a continuous exposure mode (Fig. 59).

 

3) Push the AEB button. The AEB exposure mark " multiple squares " will appear on the LCD panel (Fig. 60).

4) Compose the picture.

5) Push the release button all the way down and hold it there. A total of three pictures will be automatically taken, including one optimally exposed, another one stop exposure (compensated in the positive direction by one stop) and a third similarly compensated for in the negative direction. The taking sequence of the three exposures is one positively compensated exposure first, a "correct" exposure second and negatively compensated exposure last.4.butkus.org

6) After each of the exposures, the AEB indicator on the LCD panel varies and the remaining exposure count under the AEB shutter display is also indicated (Fig. 61).

[DIAGRAMS]
(A) Start
(B) After first exposure
(C) After second exposure
(D) After third exposure
 


8. Bulb Operation (B Mode)
When shooting night scenes or long time exposures of more than 8 seconds' duration, use the "B" mode. The reflex mirror will shift to the open (up) position while the shutter release button is pressed. Provisions for this mode include the bulb timer indications that give a progressive elapsed time and the time exposure mechanism that permits a bulb exposure time setting in advance.

1 ) Push the "B" comer of the exposure mode selector (Fig. 62).

2) Push the shutter release button to start an exposure. Its progressive elapsed will be displayed on the LCD
    panel (Fig. 63).

3) The Among display is made In one second increments up to 60 seconds and in one minute increments beyond one minute up to 90 minutes. Beyond 90 minutes, the same cycle is repeated.

NOTES:


9.Time Exposure

This mode permits any desired bulb operating time setting of up to 90 minutes to be made In advance.

 

1 ) Push the "B" corner of the exposure selector to make a bulb setting (Fig. 64).

 

 

2) Select the desired exposure time by pushing the UP/DOWN button while depressing the /time button (Fig. 65).

3) Select the desired aperture by pushing the UP/DOWN button while monitoring the LCD panel for the F-stop setting.

 


4) Push the shutter release button once to start an exposure (Fig. 66). e shutter will remain open for the length of the exposure.

 

  • The LCD panel time setting display will decline progressively, indicating the remaining time for the exposure.
  • Time exposure settings may be made in one second increments up to 60 seconds and in one minute increments to 90 minutes.
  • To cancel the time exposure mode, push the AF mode button or reset button If an exposure has not started, or the reset button, /time or AF mode button if midway through an exposure.
  • On non C-AF lenses, the aperture must be set by rotating the aperture ring on the lens barrel.

 


10. Interval Timer

The CP-9AF incorporates an interval timer that can take time-lapse photographs spaced up to 90 minutes apart.

1 ) Select either CAP (continuous AF) or ME (manual focusing) mode setting by pushing the UP/DOWN button while depressing the AF mode button (Fig. 67).

2) Set the main switch to the "C" position (Fig. 68).

3) Attach a locking cable release to the cable release socket (Fig. 69).

4) Select a specific interval time by depressing the 0/time button and the UP/DOWN switch (Fig. 70).

5) Push in and lock the cable release (Fig. 71). The LCD panel will display the time interval duration.
 

11. Electronic Flash Photography
The CP-9AF has been designed with: two flash modes

(Flash-matic mode)--for use with the AF S-120 Dedicated Strobe Unit and Dedicated AF Lens in either a programmed AE mode or aperture priority mode.

With the AF S-120 strobe unit attached and in the "on" position, the camera automatically controls the aperture and shutter speed in accordance with the camera-to-subject distance for a correct exposure.

1 ) Choose an exposure mode setting for any programmed AE or aperture priority "A" setting and a focusing mode setting for auto focus (AF or CAF) (Fig. 72).


2) Mount the AF S-120 on the camera. Raising the strobe unit starts charging the flash (Fig. 73).


3) When the strobe is fully charged, a full charge mark "lighting bolt " will light up within the viewfinder and a shutter speed will automatically be set ranging from 1/60 second to 1/100 second. The "125" LED glows in the viewfinder to indicate the shutter speed (Fig. 74).

4) Push the shutter release button gently down. The AF operation will start and when focusing is complete the aperture will be adjusted in accordance with the measured camera-to-subject range.


5) Push the shutter release button all the way down to take a picture.
 

When the 28 to 70 mm AF lens is employed, the following flash distance parameters when using the 35 mm setting should apply:
 
 
Film Sensitivity 
Proper Exposure Distances
ISO 100
0.7 to 3 m (28" to 9.8')
ISO 200
0.7 to 4.2 m (28~ to 13.8')
ISO 400
0.7 to 6 m (28N to 19.7')

(TTL Auto Dimmer Strobe Mode)--for use with the Dedicated AF S280 Strobe Unit
A TTL auto-dimmer strobe mode will be instituted with the AF S-280 strobe unit attached to the camera. In this mode, the strobe light intensity is automatically dimmed, or regulated downward, to achieve an optimum light output in relation to the sensitivity of the film employed, as well as the aperture setting and in accordance with the lighting conditions.
 

I. Aperture Priority AE (A) and Manual Exposure (M) Modes
In these modes, pictures can be taken that control depth of field and ambient light situations.

1) Select an aperture setting (Fig. 75).

2) When the strobe unit has been fully charged, the full charge mark " lighting bolt, " will light in the viewfinder and a shutter speed setting will be made automatically, from 1/60 to 1/100 second depending on the subject brightness (Fig. 76).

3) Push the shutter release button to take a picture.
 

(Slow Shutter Synchronization) When flash photography at a shutter speed slower than 1/60 second is desired, select an M mode setting by operating the exposure mode selector Push the UP/DOWN button to make the preferred shutter speed setting. The slower speed setting will then take precedence over any other setting and the shutter will be released at that speed (Fig. 77).
 

II. Programmed AE (P. PA, and PC) Modes
In these modes, the strobe light power is subjected to built-in auto dimming adjustments to accommodate the aperture setting made in accordance with the programming diagram. In addition, the shutter speed is also regulated over a 1/60 to 1/100 second range to accommodate the current subject lighting. These modes are well suited for daylight sync photography (Fig. 78).


(Daylight Sync Photography) Daylight sync photography prevents the subject from being overwhelmed by backlight or other bright backgrounds and subsequently darkened or silhouetted in the picture. In this procedure, an exposure setting is made against the background lighting. The TTL auto-dimming of the flash at the setting associated with that exposure combination then allows the main subject to be exposed at a more pleasing light level. The use of the AF S-280 in any programmed mode enables daylight sync photography to be accomplished with ease (Fig. 79).4.butkus.org
 

12. Infrared Photography

Infrared photographs are possible with the CP-9AF. Infrared rays are focused at mutually differing points from normal light rays exposed on standard films. Infrared indexes have been provided on the lens for this purpose.

First, select a manual focusing mode setting (Fig. 80). Next, focus on the subject with no filter on the lens. Then, manually adjust the focus to its corresponding infrared index and take the picture. (Be sure to make the exposures in the manual focusing (MF) mode.)

For further details, refer to the operating instructions included with infrared films.
 

(Memory Backup)
A capacitor has been built into the CP-9AF to support a backup memory in case the batteries are removed from the camera. The items listed below will be stored or about 5 hours after the removal of the batteries depending on the battery condition at that time. When replacing batteries in the middle of a roll of film, make the replacement as promptly as possible. A prolonged battery-less state may delete the stored items listed and a new mode setting may take place when new batteries are loaded later

If the memory backup was lost the follow setting will revert back to standard:


(Malfunctions)
The CP-9AF is electronically controlled by a microcomputer In extremely rare cases, the camera may fail to function properly even with fresh batteries due to a momentary malfunction, or may provide an incorrect display. This, however, is a not a permanent defect. If this should occur, first set the main switch to the "L" position, then reinstall the batteries and operate the camera. The malfunction will disappear in most cases.
 

OPTIONAL ACCESSORIES

Auto Focus Lenses for CHINON AF SLR
28-70 mm f/3.5-4.5 MACRO
70-210 mm f/4.5

Electronic Flash for CHINON AF SLR
AF-S120
AS-S280 TTL

Standard Lenses
50 mm f/1.4 multicoated
50 mm f/1.7 multicoated
50 mm f/1.9

Wide angle Lenses
17 mm f/3.5 multicoated

Telephoto Lenses
135 mm f/2.8 multicoated

Zoom Lenses
28-70 mm f/2.8-4.2 multicoated MACRO
35-70 mm f/3.5-4.5 multicoated MACRO
35-105 mm f/3.5-4.5 multicoated MACRO
35-200 mm f/4-5.6 multicoated MACRO
80-200 mm f/4.5-5.6 multicoated MACRO

Accessories

CHINON AUTO "S" series flashes available

Filters (ND2X, ND4X, 1 A, PL, Y2 4mm)
Hard rubber eyepiece
Eyepiece adapter (-3, + 1, +3)
Angle finder
Auto extension ring
Bellows
Mini copy stand
Cable release (13 inch)
Deluxe carrying case
Wide band Strap with CHINON logo
Eyepiece cover

PART ONE     PART TWO