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Film rewind

When all frames on a roll of film have been exposed, you will be unable to operate the film advance lever. Do not attempt to advance the film further, as tom film may result Check the exposure counter, and when it shows you have completed a roll of film, always be sure to rewind the film into its cassette before opening the camera back. After removing the film, have it processed as early as possible. 1. Press the film rewind release button on the base of the camera. Continuous pressing is unnecessary as the button is an automatically resetting type. 2. Unfold the film rewind crank and turn it in the direction of the arrow. Keep turning until you feel a light resistance shortly before the film comes off the take-up spool and continue turning until the crank eventually rotates freely.4www.butkus.org

Light metering system

The FX-70 Quartz features a TTL fall-aperture metering system that measures the light coming through the lens at the lens's fully open (largess aperture. The light meter is a "center-weighted" type, meaning that the meter primarily measures subject brightness at the center of the viewfinder, giving less emphasis to surrounding areas. The metering method is "aperture priority", meaning that once the film speed and lens aperture have been set, shutter speed is controlled automatically in response to subject brightness, to give correctly exposed photographs. The shutter speed at time of exposre is indicated by the LED display inside the viewfinder.

<Built-ln Exposure Meter>

The shutter release button of the FX-70 Quartz also acts as the switch for the built-in exposure meter. When the shutter release button is touched lightly, the switch is turned ON, and the LEDs inside the viewfinder light steadily or flash to indicate the exposure at that time. After removing your finger from the shutter release button, or after taking a picture, the exposure meter remains ON, turning itself OFF automatically 10 seconds later.

If the shutter release button is pressed further, the shutter will be tripped.

Since this is a centenweighted type metering system, the center ring in the viewfinder should be placed on the subject you wish to photograph in order to ensure correct exposure.

<LED Indicators during Automatic Exposure> When exposure is correctly metered, the LED beside the shutter speed at that time will light steadily. If the ambient light conditions exceed the metering capabilities of the camera, the "OVER" or "B" indicators will flash to indicate respectively over-exposure and underexposure.

Click here to see the chart of Light Reading Range.

<Light Reading Range> The table gives the EV Light reading range for various lenses, showing the inter-relationship between aperture, shutter speed and EV (exposure values). For instance, when an f/1.4 lens at ASA/ISO 100 is used the reading range spanning the points that the vertical lines (EV) and the horizontal lines (shutter speed) intersect with the diagonal lines extending from the f values of "1.4" to "16" (representing the minimum aperture of the Yashica Lens ML 50 mm f/1.4), denotes the reading range from EV 1 to 18.

* The EV denotes the value of exposure through combination of the shutter speed and the lens aperture that yield the same exposure effect on a film when the photographing conditions (film speed rating and prevailing illumination) remain the same. For example, when using EV 13 from the chart as a guide, it can be seen that the same exposure effect is attained using the combinations of f/16 at 1/30 sec. and f/8 at 1/125 sec.

* The table showing EV from 1 to 18 and shutter speeds from 11 to 1/1000 sec. denotes the range over which the camera correctly meters the light in the AUTO mode.

*  That part of the operating range which is shown in color denotes the light reading range when using an f/1.4 lens at ASA/ISO 100.

Automatic Exposure

The FX-70 Quartz gives correct exposures automatically merely by setting the lens to your desired aperture, thus allowing you to photograph while paying fall attention to your subject. (1) Set the Shutter Selector to "AUTO".  This place the camera in the automatic exposure mode, so that the shutter speed is set automatically.
	(2) Set the Aperture. Turns the aperture ring on the lens to your desired f/stop. Intermediate positions may also be used. (3) Focusing and Composing. Point the camera at the subject, and while looking through the viewfinder focus by turning the focusing ring, and compose the picture.

(4) Check the Exposure and Shoot. Press the shutter release button lightly and check the LED indicators within the viewfinder. If any of the LEDs from "1000" to "LT" light, the indicated shutter speed will give you the correct exposure, and you may press the shutter release button further to take the picture. <Shooting at Your Selected Shutter Speed> By applying the interrelation between aperture setting and shutter speed (the larger the aperture, the faster the shutter speed, and vice versa), your can vary the aperture setting in order to photograph your subject at a particular shutter speed when desired. <Shooting Away from Viewfinder in Auto Mode> Exposure metering can be affected by stray light entering via the eyepiece when it is left unshielded during Auto mode shooting using a self-timer or remote control accessory. In this case, attach an accessory eyecup to the viewfinder eyepiece as shown in the illustration, slide it up and fold the rubber part so that it blocks out any stray light.4www.butkus.org

Exposure compensation

In automatic exposure photography, there may be cases when correct exposure of the subject cannot be achieved normally due to strong backlighting, or a large difference in the amount of light falling on the subject and background. In these cases, as well as when you wish to take deliberately under or overexposed photographs for special effects, exposure compensation is necessary. The FX-70 Quartz is equipped with a one-touch AE lock lever, and an exposure compensation scale, both of which allow you to perform exposure compensation when required. <Using the AE (Automatic Exposure) Lock Lever> This device memorizes the exposure (shutter speed) at time of exposure metering. When the AE lock lever is turned in the direction of the handgrip, the shutter speed indicated at that time will be memorized inside the camera, and the LED beside that shutter speed in the viewfinder will begin flashing. To expose the picture, press the shutter release button while continuing to hold the AE Lock lever in position. When the AE Lock lever is released, the memorized shutter speed will be cleared, and the LED will light steadily, automatically going out 10 seconds later.

 

<Examples Using the AE Lock> As shown in the photograph on the next page, when a strongly backlit subject (bright light coming from behind the subject) is photographed without compensation, the subject may appear very dark in relation to the background. In this case, approach the subject closely so that the subject fills the entire field of view in the viewfinder, and while holding the AE lock lever toward the handgrip, return to your original positin and take the picture. In this way the central subject will be exposed with the proper brightness. Using the AE lock lever in this way allows you to achieve good results simply, under such difficult conditions as backlighting, bright background lighting, or when the subject is illuminated by spotlight, etc.

<Using the Film Speed Dial>  For normal automatic photography, the numerical film speed value (ASA/ISO number) of the film used is set opposite the "X1" position on the exposure compensation scale, but in order to perform exposure compensation, depress the film-speed-dial release button, and turn the dial until the speed value of the film in use lines up with the desired compensation scale reading. The exposure compensation scale can be used at intermediate settings and can be click-stopped in 1/3 increments between scale readings. Always reset the ASA speed value for the film being used to "X1" when exposure compensation is no longer needed.4www.butkus.org

· At some film speeds, exposure compensation settings cannot be used, as indicated in the table as follows (these settings exceed the camera's film speed range).

Values "2" and "4" Increase the Amount of Exposure
In situations such as shooting against the light or where your subject is back-lit by a bright sky or beach scene, or when you want to overexpose intentionally, set the dial at "2" or "4". The "2" setting corresponds to a change of one f-stop, and the "4" to two f-stops.

Values "1/2" and "1/4" Decrease the Amount of Exposure
In situations where the background is dark because of spotlighting of the subject or where you want to underexpose intentionally, set the dial to "1/2" or "1/4". The "1/2 " setting corresponds to a change of one f-stop, and the "1/4" to two f-stops.

Flash Photography

When shooting indoors or at night, the use of an electronic flash unit is recommended. For this purpose, the dedicated electronic flash "CS-201 Auto" can be used with the FX-70 Quartz. <Using the "CS-201 Auto"> When the FX-70 Quartz is used in combination with the CS-201 Auto flash unit, automatic flash photography can be performed with the shutter selector set to the "AUTO" position. Set the flash unit's selector to "AUTO". When the unit is fully charged, the camera will automatically switch to the flash synchro shutter speed of 1/100 second, and the flash ready signal " ~ " inside the viewfinder will light, showing that the camera and flash are ready to photograph. When the shutter release button is pressed lightly, the LED beside the "125" will flash.

Click here to see the chart on viewfinder action when using a flash. Click here to see the combination of flash guns available for yhou FX-70 and abilities of each.

* You can also take flash pictures with the selector set at "AUTO". In this case, make sure the shutter speed indicator in the viewfinder shows 1/60 sec. or slower.

* When using other electronic flash or flash bulb unit, use one of the cordless type. 

* With flash bulb units, use a shutter speed of 1/30 sec. or slower.

Quartz Self-Timer

The self-timer is used when taking group pictures or on other occasions, when you wish to include yourself in the photograph. When the shatter release button is pressed, the self-timer LED flashes to let you know the self-timer is operating. (1) First, focus the camera, then turn the self-timer lever in the direction of the arrow until it stops. The self-timer is now set. The self-timer can be set either before or after advancing the film.

(2) Check to make sure the film is advanced, then press the shutter release button. The self-timer LED will begin flashing, and 10 seconds later, the shutter will be automatically tripped. During the last two seconds before the shutter trips, the flashing of the self-timer LED will become more rabid. letting you know that the shutter is about to be released. During the operation of the self-timer, you can cancel the self-timer by pushing the lever back to its original position.

After completing use of the self-timer, be sure to return the self-timer lever to its home position. If left in the set position, the self-timer will operate each time the shutter release button is pressed.

* When using the self-timer for automatic exposures, use an eyecup to shield the viewfinder eyepiece from outside light (refer to p. 52)

* During the operation of the self-timer, the LED indicators inside the viewfinder will go out.

* The self-timer will not operate when the shutter selector is in the "B" position.



"B" (Bulb) photography

When making photographs of starts, or other photography at night requiring long exposure times (1 second or longer), set the shutter selector to "B" (Bulb). In this mode, the shutter will remain open, and the film will be exposed, for as long as the shutter release button is held depressed. In this case, camera shake is inevitable with hand-held photography, thus the camera should always be mounted on a tripod, or rested on a solid surface to keep.it immobile. To further remove any possibility of camera shake, the Cable Switch S (optional accessory) should be connected to the camera. Inside the viewfinder, the LED will flash at the "B" position, and when appropriate, another LED will light steadily beside the shutter speed appropriate for the aperture which has been set.

Release socket

<Release Socket> This may be used to attach remote control devices such as the Cable Switch S. Infrared Controller S. Radio Controller, etc., or as a contact for connecting the Auto Bellows or the RTF 540 flash unit. The socket receives electrical signals from these accessories which are used to operate the shutter. · Do not connect an ordinary cable release (mechanically operated type) to this release socket as this can cause damage to the socket device. <Infrared Compensation Mark> With infrared film (and a red filter) it is necessary to correct focusing for the long length of the infrared rays, since even if focusing appears correct within the viewfinder, it will be off at the film plane. Both Yashica ML and Zeiss T. lenses have an infrared compensation mark or red dot on the depth-of-field scale on the lens barrel (mirror lenses do not have this mark because they do not require any correction). First use the normal focusing procedure, then turn the focusing ring until the distance at which you have focused is opposite the red compensation mark.4www.butkus.org

Depth-of-field

One property of lenses is that when they are focused, on a certain subject, not only the subject itself, but all objects in a certain range in front and in back of the subject will be nearly enough in focus to appear sharp to the unaided eye. This range is called the depth-of-field. The depth-of-field of a given lens varies, as follows: (1) If the aperture is stopped down the depth-of-fled increases; if the aperture is opened up the depth-of-field decreases. (2) As distance to the subject increases, depth-of-field increases as distance to the subject decreases, depth-of-field decreases.  (3) The depth-of-field is greater behind the subject on which the lens is focused than in front of it; Different lenses have different depth-of-field limits. A lens of short focal length has greater depth-of-field at any set distance than a lens of long focal length.

<Depth-of Field Scale> The actual range of depth-of-field can be checked using the depth of field scale on each lens. For example, when the 50 mm lenses are focused at a distance of 5 meters and aperture is set at F16, the depth of field will be the range of distances opposite the two 16s on the depth of field scale; in this case, objects between about 2.7 meters and infinity will appear in focus.

Specifications

Type: 35 mm focal-plane type AE single-lens reflex camera.

Image size: 24 x 36 mm,

Lens mount: Contax/Yashica mount.4www.butkus.org

Shutter: Electronically controlled, vertically moving, metal focal plane shutter (quartz-oscillator timed).

Shutter speeds: · Auto: 11 seconds - 1/1000 second; · Manual: X synchronization (1/100 second); B (Bulb).

Synchro contact: Direct X contact ("hot-shoe"), synchronized for flash at 1/100 second. When used with CS-201 Auto, TLA30, or TLA20, automatic setting at 1/100 upon recycling of the flash unit,

Self-timer: Ouartz-timed electronic self-timer. · 
    Operating time: 10 seconds. · Operating indicator: Timer LED flashes (flashing cycle speeds up last two seconds
    before shutter release). Can be cancelled during operation.

Shutter release: Real Time Electromagnetic Release System auxiliary remote release via "Release Socket" (electronic accessory connection).4www.butkus.org

Exposure control: Through-the-lens (TTL), center-weighted metering at full aperture. Aperture-priority AE type. · Light metering element: SPD (silicon photo diode). · Metering range: EV 1 - 18 (ASA/ISO 100, with F1.4 lens). Film speed setting range: ASA/ISO 25 -1600.

Exposure meter: Meter turns on when shutter release button is pressed partway (displays light for 10 seconds), LEDs displayed in viewfinder.

AE lock: Lever type (locks shutter speed at time of setting).

Exposure compensation: + 2 ~ -2 EV (by f ilm speed dial).

Viewfinder: Eye-level pentaprism type. · Field of view shows 95% of film-exposure area. · Magnification: x0.86 (with 50 mm normal lens set at infinity).

Focusing screen: Horizontal split-image/microprism type.

Viewfinder display: · Exposure display: 15 red LED array for correct shutter speed indication including over- and under exposure LED indicators; dedicated flash ready signal (green LED); shutter speed indicators.

Film advance: Lever type, with 130° film advance stroke, 20° standoff position.

Film rewind: Film rewind crank and rewind release button (automatic resetting type).

Exposure counter: Count increasing order, automatic resetting type.

Accessory shoe: Direct X contact ("hot-shoe") type, with terminal for coupling flash unit.

Camera back: Opens by lifting film rewind knob.

Power source: Uses 21.55 V silver-oxide batteries (Eveready S76, Ucar S76, Mallory MS-76, or equivalent), or 1.5 V alkaline manganese batteries (LR44 or equivalent). 4www.butkus.org

Dimensions: 135 (W) x 88.5 (T) x 50 (D) mm.

Weight: 435 grams (without batteries).

* The above specifications and design are subject to change without notice.



Camera Care

* Excessive heat may adversely affect the film, batteries or camera system and result in improper exposure. Avoid leaving the camera in direct sunlight, glove or trunk compartment, rear-seat shelf of cars and other hot areas. If the camera has been exposed to excessive heat, allow it to cool to normal temperature before use.

* Salt air, sand, dirt and other foreign matter will damage the camera's internal system if allowed to penetrate inside. Take care to keep the camera clean when using it at the seashore or in sandy areas. Shocks from dropping or bumping are another major cause of camera malfunction. Always handle your camera with great care to ensure years of trouble-free operation.

* Avoid touching the lens, viewfinder eyepiece and other glass surfaces with your fingers. Blow dust and dirt away from these surfaces with a blower/brush, or wipe gently with a soft cloth (after brushing) if necessary. Clean smudges and smears on lens and mirror surfaces with high quality lens-cleaning solution and tissue. Always take extra care in cleaning the lens and mirror surfaces to avoid scratching.

* Sudden and frequent changes in temperature could lead to corrosion of electrical contacts and cause other malfunctions. When shooting in cold or hot areas, avoid extreme temperature changes as much as possible.

* Make it a point to always check the camera functions before taking pictures (travel, wedding, business photos, etc.).

* It should be noted that when print films are processed, standard service-size prints will show an area slightly less than that seen on the negative.

In order to get the best performance from this, camera, we recommend the use of Yashica and Contax brand lenses and accessories. We take no responsibility for damage to the camera from the use of other brands of products said to be for use on Yashica or Contax

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