Ihagee EXA IIa, Manual

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nism of the Meritar f2.9/50 mm lens (Fig.7):
Press the knurled ring to the rear of the aperture
scale towards the camera body and turn the
diaphragm setting ring until the desire aperture
value is opposite the red setting dot. Then allow
the knurled ring to spring back to its original
position. For focusing, open the lens diaphragm
to its maximum aperture and then, just before
releasing the shutter (without moving the
camera), turn the diaphragm setting ring up to
its preset stop to select the previously-closen
aperture.
Operating the fully-automatic pressure
diaphragm of the Domiplan f2.8/50 mm
lens (Fig. 8): The fully-automatic pressure
diaphragm is always used at full aperture for
focusing and observing the reflex finder image.
Preselect the desired smaller diaphragm aper-
ture by turning the diaphragm setting ring (right
at the front of the lens barrel). The appropriate
aperture value must be opposite the red trian-
gular mark. It is also possible to set intermedi-
ate values between any two f/stop figures. By
pressing on the release rocker (3) the lens is
stopped-down automatically; when the release
rocker is released, the diaphragm automatically
opens up to the maximum aperture. The rocker
should not, however, be released until the
shutter has closed. There are two methods of
making time exposures: 1. Set the shutter-speed
setting ring to “ B” and screw a cable release
provided with a time-exposure lock into the
release rocker. In this way the pressure on the
release rocker or on the shutter release button
Fig. 8