How
to
use bellows and Extension tubes
These attachments are used for macro-photography (close-ups).
The closer the lens comes
to
the subject, the less light passes
through the lens,
as
the distance between the lens and
fIlm
increases.
This has
to
be compensated for
by
the camera.
The attachment
is
mounted between the camera body and the
lens
to
be used. After focusing
is
performed with the lens at full
aperture, the diaphragm
is
closed down
to
the preselected dia-
phragm opening, and
the
meter switched on.
As
there
is
very little
depth
of
field in close-ups it
is
advisable to select the smallest
possible opening. Adjust the meter needle
by
turning the shutter
speed dial and use a cable release
to
activate the shutter.
When using the Miranda Automatic Extension tubes with an
Auto Miranda lens, follow the instructions for exposure determina-
tion with Auto Miranda lenses on page 25.
Magnification ratio and exposure factors are shown
on
the
next page.
35
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