Ihagee EXA IIa, Руководство пользователя

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ring immediately in front of the camera body.
The diaphragm remains stopped-down accord-
ing to the position of the ring; this method of
aperture-setting is required for time exposures).
The diaphragm setting ring has click stops at all
aperture settings, even at intermediate values
which are not engraved on the ring. The desired
aperture value must be set opposite the red
setting stroke.
When using the fully-automatic pressure dia-
phragm (red dot on the control ring pointing
upwards) the lens diaphragm is opened to its
maximum aperture for focusing and observing
the reflex finder image; it is then stopped down
to the preselected smaller aperture (- work-
ing aperture) just by pressing the release. The
working aperture which is to be used for taking
the picture is preselected by means of the dia-
phragm setting ring. By pressing on the release
rocker to take the picture, the diaphragm first
closes down to the preselected smaller aperture
and then the camera shutter is released. Upon
letting go of the re- lease rocker the dia-
phragm opens up automatically to its maximum
aperture; therefore, do not release the rocker
until the shutter has closed completely (this is
especially important when using the slower in-
stantaneous speed settings). When taking time
exposures, the lens should be set for normal
diaphragm operation (white dot on the control
ring pointing upwards); screw the cable release
into the re- lease rocker.
For checking the depth of field during focusing
when the lens is set for pressure-diaphragm
operation, only depress the release rocker
sufficiently to close the diaphragm down to the
selected aperture; the shutter must not, howev-
er, be released.
The Meyer f 2 50 mm standard lens has still
another advantage: its long helical focusing
thread permits close-up focusing down to 0.34
meters (approximately 14 in ) without requiring
additional extension accessories.
Operating the fully automatic spring dia-
phragm of the Jena T f2.8/50 mm and lens
Pancolar f2/50 mm lenses (Fig. l0) : Focusing
is performed by turning the front, distance