Instructions for Use
Table Of Contents
- Pentagon six
- Important parts of the camera
- Abridged instructions
- Inserting the film
- The exposure counter
- Film reminder dials
- The finder hood
- The Magnifier-Sportsfinder
- The Pentaprism
- Focusing
- The diaphragm
- Image field lenses
- The rangefinder lens
- The focal plane shutter
- The exposure speeds
- The rapid wind lever
- Delayed action mechanism ‑ shutter release
- Synchronization
- Removing the film
- Exchanging lenses
- Lenses
- Supplementary lenses with automatic diaphragm
- Supplementary lenses without automatic diaphragm
until winding of the lever becomes noticeably easier. Do not advance the trailer by short rocking movements as were
used when inserting the film (see page 3 and page 4)! Now open the camera, back, pull out the spool support and lock
it. Tip the camera slightly, let the film spool full inch your hand and fasten the gumstrip to the paper trailer. Also (in
case camera is fixed or tripod) the film spool can be lifted out by its lower spool flange, in which case it must rest
against the upper part of the spool chamber with the carrier mechanism still engaged.
Exchanging lenses
Exchanging lenses is a quick and simple matter. Turn milled ring (18) of the bayonet fitting anticlockwise until it
stops and remove the lens of the camera. The red mark on the scale of the lens to be inserted must be at the top, and
the screw, or pin, on the inner edge of the lens mount has to engage in the recess in the lens seat of the camera (see
illustration). To fasten lens tighten milled ring (18) by clockwise movement
Lenses
The standard lens, Jena Bm 80 mm F. 2.8 is equipped with automatic spring diaphragm control (ASD) no specific
handling of the lens is necessary except setting the aperture required for the exposure. The diaphragm is automatically
controlled by the camera. During the focusing procedure it is completely open.
Supplementary lenses with automatic diaphragm
are operated in the same manner as described above for standard lenses. This applies both the setting the diaphragm
stop and checking the depth of field.
Supplementary lenses without automatic diaphragm
(e.g. Telemegor 300 mm in F. 4.5 with manual preset diaphragm) is are set by pressing adjusting ring directly behind
the diaphragm scale backwards adjusting it to bring its mark against the desired diaphragm numeral where it clicks in.
This makes it possible also with these lenses to focus at full aperture. Immediately before making the exposure, you
turn the diaphragm ring back to the preselected stop. With lenses of a longer focal length (exceeding 300 mm) the
automatic diaphragm lever in the camera may project into the path of rays and can, therefore, be moved away from its
normal working position towards the camera body. To achieve this, remove the lens from the camera and swing the