Extended Functions/
Distance Scale In close-up work, the scale of reproduction is
more important than the subject distance. With
the aid of the scales (for three focal lengths) on
the bellows rail you can set the camera directly
to the desired scale of reproduction. In this case,
focusing is achieved by moving the camera back
and forth into position.
The scale (1) provides the following data:
Alongside the focal length figure (left) a trian-
gular mark indicates the normal (2) position
for 80, 150 and 120mm lenses and the "retro"
position (3) for the 80mm lens (bottom row).
The scale of reproduction (5) is the ratio of the
image size on the film related to the size of the
original object. For example, 0.2 = 1/5 natural
size. These values are set and read off alongside
the tilt indicator bar (4) and apply to the bar
next to the figures, which has the corresponding
exposure correction values (6) printed on top of
this bar.
The center line (7) indicates the length of the
bellows extension in millimeters (0 to 50mm).
This line also acts as an index for the degree
scale (4) when tilting the lens up or down (0 to
8 degrees).
10
Scale of Reproduction
The distance scale on the focusing knob is
used only for estimated depth of field, for
zone focus settings and when using flash
lights.
The figures on this distance scale apply
only to the first complete turn of the focus-
ing knob (with the lens mounted in normal
position). Featured distance figures are
measured from the film plane to the subject.
The scales read either in meters or in feet
(when set to 80mm lens, starting at 20m or
50' after infinity mark).
The focusing knob is equipped with four
different scales for 50,80,150 and 250mm
lenses. The selected focal length is visible in
a window on the outside face of the knob
(see page 16).
The bellows extension of 2" (5cm) can be
further increased with extension tubes of 40
and 80mm, or a bellows system in any com-
bination. This yields even nearer focusing
with all lenses.
With the lens mounted in "retro" position
(reversed, front lens element facing the film)
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