Remember, the lightmeter is giving you an average reading of the
entire frame. You may choose to vary the suggested exposure accor-
ding to subject conditions.
2.9.3 Using the Lightmeter without Running Film
It is also possible to use the lightmeter without actually running the
camera. Set the ISO selection to the exposure index of the film
being used. Set the camera to test position using the on/off switch
on the body or the handgrip. If the handgrip is used, the momenta-
ry switch must be held in the test position. The mirror shutter will
rotate 180° allowing light from the lens to reach the film and a rea-
ding to be taken by the meter. Adjust the lens iris until the center
green diode is darkened, indicating proper exposure.
2.9.4 Testing and Adjusting the Meter
If you are operating the lightmeter for test purposes, don’t forget to
have film in the gate before taking a reading
The following is the procedure for checking and adjusting the sensi-
tivity reading of the lightmeter:
• 1 - Evenly light a standard 18% grey card.
• 2 - With a loaded magazine and lens on the camera, frame the
chart so that it completely fills the Super16 frame.
• 3 - With a properly calibrated handheld lightmeter, take a reading
of the grey surface and set the T stop of the lens accordingly.
• 4 - Switch the camera to run or test position and check the posi-
tion of the darkened diode. If the center green diode is darkened,
the camera’s lightmeter is set correctly. If the darkened diode is to
the left or right, it is possible to adjust its reading.
• 5 - To access the lightmeter potentiometer, remove the complete
37
THE CAMERA BODY
Single Frame Operation
You may use the wooden hand-
grip Run/Test switch of your
camera to shoot a single frame:
just press this button to Test
and immediatly release it. In
that case, the film is exposed
during 1/4 second.
But you need to know that the
XTRprod chamber is still not
opaque enough so that more
than 10 minutes can separate
two single image shots. To use
an Aaton camera in single ima-
ge shooting, you'd better use
an intervalometer and a lens
capping shutter.