Viewfinder Black-Out Control; Optical System - LEITZ Leicina Super RT-1 Instructions Manual

Viewfinder black-out control
To prevent stray light from entering the
viewfinder when the camera is on a tripod ,
rotate knob (30) to align its black dot with
the white index on the camera.
16
Optical system
of LEICINA SUPER RT-l
The fourteen-element LEICINA VAR IO
lens (13) is permanently attached to the
camera. Its' zoom ratio is 8 to 1 (8mm to
64mm) and its' aperture range is from
f/
l.9 to 1/22. Closest focusing distance is
90cm (36 inches) . A beam-splitting prism ,
built into the lens, diverts a portion of the
light to the viewfinder. The viewfinder
field is the same as covered by the lens.
[
l
r
[