Operating Instructions

18
To change lenses, first remove the cable release from the shutter by sliding
down the red button of the rapid lock cable release socket, respectively
unscrew the cable release from its shutter socket if no rapid lock is provided.
Hold the lens by its shutter with one hand, lift the lensboard lock (4) with the
other. Now, the lens-shutter-lensboard assembly may be removed from the
lens standard. The new lens is inserted with the lower edge of the lensboard
into the retaining brackets (see ill.) and pushed back into the standard frame
while lifting the lensboard lock (4). Only then the lensboard lock should be
released. The insertion of lenses of long constructional design or with large
size back elements is greatly facilitated with a longer bellows extension.
When focusing according to the scale, the pertaining distance scale mounted
on the interchangeable scale stage must be used, i. e. for wide-angle lenses the
black engraved, for normal lenses, the red, and for telephoto lenses the green
scale.
If more than three lenses are coupled to the camera, additional colour codes
are available. The scale stage only contains as many scales as there are
lenses coupled to the camera. The scale stage is interchangeable against
another one, to provide corresponding distance scales for more than three
lenses. For focusing with the multifocus rangefinder, it is required to exchange
the coupling cam together with the lens.
Before closing the camera, lenses of long construction
must be removed from the lens standard!
17. INTERCHANGE OF LENSES (classic and 2000)