Fo
cabe
ll
A
ll
A deluxe type
of
extension bellows
unit, double track and rack-and-
pinion for speedy movements and
a precision focusing device.
Focabe
ll
S
Foldable compact type
with
single
track which
is
light and easy to
carry.
• Pushing the lever
on
its right side permits the bellows
to slide forward. Pulling it back locks the bellows firml
y.
• Between the two tracks
is
a scale givi.ng magnification
ratios and exposure factors, black figures on one side
for the
50mm
lens and red figures on its reverse for the
short-barrel
13
5mm
lens.
This
scale can be detached by
removing a screw and re-attached to indicate the side
which matches the lens being used.
• Magnification ratio
is
1- 2.6 times with
50mm
lens
and infinity to
0.6
times with short-barrel
13
5mm
lens.
The
figures on the
sca
le show magnification ratios
at
top and exposure
at
bottom.
•
The
n13gnification ratios are read off from the position
indicated
by
the
tip
of
the precision focusing device.
• Erect the track and lock it in position by moving the
sma
ll
button
on
the focusing knob side.
•
The
focusing knob
is
on the right side and the locking
knob which
is
turned clockwise for locking the track
is
on the l
eft
side.
•
The
magnification scale on the left side
is
for
0.9
- 2.5
times with the
50mm
lens,
that.
on the right
is
for in-
finity to 0.5 tIme;; with the short-barrel
13
5mm
len
s.
• T he magnification ratios can be read off from the posi-
tion
of
the
tip
of
the track guide, which slides through
the side groove
of
the track.
51
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