Reciprocity Corrections
If the exposure time is shorter than 1/10,000 seconds or longer than 1
second, it is necessary to calculate and adjust for reciprocity failure.
Exposure time indicated by
Exposure scale
Compensation
Exposure
1 second (or over)
x2
2 seconds
5 seconds (or over)
x5
25 seconds
50 seconds (or over)
x12
600 sec or 10 min.
Note:1. All informations mentioned above is based on ASA100 film
speed. 2. Some practice will be required to relate the times given in
this chart to your particular camera and film. Keep a record of the
light condition and the exposure time for every photograph you
take, so that you can make later adjustments accordingly.
5. Turn the film advance knob (D) clockwise to advance the film until
the number "1" appears under the film counter window (K)
Note: The mechanism of the film advance knob(D) will only turn in a
clockwise direction, so as to prevent the film from curling back. If
you attempt to turn the knob in a counter-clockwise direction, you
may damage the camera.
USING THE FILM COUNTER WINDOW
1. Slide the film counter window cover
(F) to open it. You will see three round
red film counter windows (K).
2. Use the upper window if your camera is
set to a 6 x 4.5 format. the middle one is
for 6 x 6 or 6 x 12 format. The lower one
is for 6 x 7 and 6 x 9 format.
3. Advance the film with the film advance knob (D) in clockwise
direction until you see the number "1" appear in the appropriate
film counter window (K).
4. When the exposure is finished, advance the film until next number
appears in the same film counter window (K).
Note: 1. For the 6 x 12 format, use the middle film counter window
and advance the film until an "even" number appears, (i.e.
for the first frame, the film number is "2" and the for the
next frame, the film number should be "4", "6" "8"and "10"
is the last frame).
2. Remember to advance the film after every exposure or you
will get a double/multi exposure image.
TRIGGERING THE SHUTTER
1. To expose, simply slide the shutter (A) to open the shutter. When the
exposure time is up, close it by slide it back to cover the pinhole.
2. If you use high speed film or a zone plate version camera, the exposure
time may less than 1 sec. This time you need to open the shutter (A)
and hide the pinhole/zoneplate with your finger, then remove your
finger and put it back to cover the pinhole as fast as you can.
UNLOADING THE FILM
When loaded with 120 roll film, the camera takes 16 frames when it is set
to 6 x 4.5 format, 12 frames when set to 6 x 6 format, 8 frames when set to
6 x 7 or 6 x 9 format, and 5 frames when set to 6 x 12 format.
1. When all of the frames have been exposed, simply continue to turn the
film advance knob (D) clockwise until all the film is transferred to the
take-up spool.
2. Open the top cover (B) and remove the back cover (E), in order to
withdraw the exposed roll of film.
3. Tighten and seal it with tape or a rubber band to prevent damage from
light leaks.
Note: Although the camera is designed to enable you to load and unload the
film anywhere, we highly recommend that you do not load or unload
the film under bright sunlight as loosely wrapped film may suffer
damage from light leaks.
MAINTENANCE
1. Prevent the camera from getting wet.
2. Do not allow the camera to be exposed to strong sunlight for a long
time.
3. Do not press or punch the pinhole or zone plate or the film counter
window with any object.
4. Never clean the camera with an alcohol-based cleaning agent.
5. Clean the camera with a cotton cloth, with polishing oil like lemon oil,
orange oil for woodworking, Beeswax is preferable. Always try a little
at the bottom corner before you apply the agents to the whole camera.
6. If the shutter or the exposure scale is too tight or too loose, adjust the
screw that holds it with a screw driver.
7. Clean the pinhole/zone plate with an air blower tenderly. Keep the
blower at least one inch away from the pinhole or the zone plate and
blow away the dust tenderly. Too much air pressure may damage the
pinhole and the zone plate.
8. Never over-tighten the knobs or any screw of the camera. It will cause
damage to the camera.
9. Do not store the camera near a heat source or in a cabinet with humidity
control, as the camera may dry up or crack.
Film Format you are using
Film counter window to use
6 x 4.5
the Upper one
6 x 6, 6 x 12
the Middle one
6 x 7, 6 x 9
the Lower one
6x4.5
6x6
6x7
6x9
close
open
MOUNTING THE CAMERA
The camera comes with a tripod mount located at the bottom. You can
mount the camera to a tripod or just put it on the ground or on a table.
We highly recommend that you use a tripod if you want to frame your
scene precisely or if you need to keep your camera stable for a long time
or for a fast exposure. Remember to loosen all of the control knobs of
your tripod before tilting or swinging the camera otherwise you may
damage the tripod socket.
6x12
close
open
5
4
3
6
If you don't want to use a light meter, use 2-4 seconds under bright
sunlight, 4-20 seconds for shade; 4-10 minutes for cloudy, for indoor or a
lighted scene, use 15-45 minutes or more. These estimated exposure times
are based on ASA100 film.
EXPOSURE
Calculating the exposure time:
Our camera comes with an exposure scale
(G). If you have a light meter, you can make
use of the exposure scale (G) to calculate
the exposure time easily. The numbers on
the outer ring of the exposure scale (G) are
the exposure time ranging from 1/8000 of a
second to 15 hours and numbers on the
inner (movable) dial indicate f/stop number
setting. These range from f/1.4 to f/500.
1. Use a light meter to get a reading of the
scene you wish to photograph. Choose
the f/stop that is aligned most closely
with a given exposure time. (For
example, the reading is f/5.6, 1/500
seconds).
2. Look at the inside ring and find the f/
stop selected from the light meter (f/5.6
in this example). Turn the dial until that
f/stop matches with the correct exposure
time (1/500 seconds in this example).
3. Now find the f/stop of your camera on the inside dial (f/stop of the 6 x
12B camera is f/158). It will be aligned with the estimated exposure
time of the photograph you wish to take, i.e. 1.5 seconds in this example.
Zero 6x12B_AW_FA
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