QUICK-RETURN
MIRROR
-------------------------
/
/
The
mirror
is
of
course
of
the quick-return type which
causes an extremely short viewfinder black-out during
shutter
action.
Due
to its original constructlon, the mirror
mechanism on
MIRANDA
Sensorex
is
particularly quick-
acting and the viewfinder black-out
at
shutter
speeds
of
1 I
15
second or faster lasts no longer
than
the blinking
of
an eye .
•
The
coupled action between the automatic diaphragm
and the mirror too
is
very smooth, so
that
when the
shutter
button
is
pressed:
(1)
The
diaphragm closes down
to
the preset aperture,
(2) Almost simultaneously the mirror swings up,
(3) Followed by opening
of
the
shutter
curtains and
film exposure,
(4)
Then,
the
shutter
closes, mirror returns
to
normal
position and
the
lens diaphragm re-opens fully.
All
the
above actions are instantaneous.
27
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