Operation Manual

A shutter is designed to control the amount of light reaching the film surface in terms of time and
photographically to fix an image of a subject on it. The shutter speed scale has calibrations of B and I to
1/1000 sec. and the denominator of each speed is indicated on the shutter speed dial. The shutter speed may
be adjusted simply by bringing a reading in line with the index mark
· Shutter speed calibrations are also visible in the viewfinder, thus making it possible to ascertain the speed
while looking through the viewfinder.
·"B" stands for bulb exposure and is used when there is the need for the exposure of over one second. (Page
53)
· The red figure of "125" is the maximum shutter speed for synchronization with an electronic light.
· Do not turn the shutter speed dial when the shutter button is depressed.4.butkus.org
APERTURE
The lens aperture is designed to control the amount of light reaching the film surface in terms of area and the
depth of field (see Page 40). Your camera's EE system will automatically determine the correct aperture
value, once the EE mark on the aperture ring is aligned with the index mark. Manual aperture is also usable
(Page 35). In either event the fully automatic aperture system will work and the lens will be stopped down to
a determined f-number only during the split moment when the shutter is depressed and then automatically
return to the full opening after a picture has been taken.
· The amount of light going through the lens will reduce in proportion to a rise in the aperture value. The
correlation, as indicated in the above figure, is such that the brightness of the lens reduces by half in
proportion as the aperture enlarges by one reading.
· The lens having the EE Release Button (12) at its aperture ring is equipped with an EE lock. In the event