Fig. 3
Out of focus.
的
Self timer
The built-in selftimer
(R
Fig. 2) can be
adjusted from 1-20 seconds. Turning
the lever to its extreme position corres-
ponds to a delaγof approximately
20 seconds. If moved 90° onlγ
，
the delaγ
will be about 6 seconds.
Wind the ALPA first
，
set the selftimer
，
then depress the release button com-
pletelγ. This sets the delaγed action into
motion
，
giving γou plentγof time to take
upγour position "in the picture'\
Important: When using the selftimer
，
disengage the automatic diaphragm of
γour automatic lenses. Otherwise the
picture will be taken at full aperture.
Ifγou use the selftimer with the shutter
set on 8
，
the exposure time will be about
3 seconds. This long exposure time is
invaluable for pictures taken under poor
lighting conditions or at very small
apertures.
The extremelγgentle release bγthe
selftimer permits vibration free expo-
sures
，
especiallγuseful at slow shutter
speeds. If for anγreason a picture is
not taken after the self timer has been
se
t，
simplγlock the release button
(V Fig. 2)
，
then keep the release button
depressed until the lever
(R)
returns to
its original position.
6) Flash Synchronization
The upper X and F contact (Fig. 2) is
for sγnchro
川
zation with electronic
flash at shutter speeds up to 1/60
4
Fig. 4
(L)
In focus.
second. Ifγou try faster speeds
，
onlγ
part of the image will be exposed. At
slow speeds up to 1/15 second
，
γou can
also use this contact with the more
economical flashbulbs for central shut-
ters
，
which have a short peak (class F
bulbs with 5 milliseconds delaγ) .
The lower M contact (Fig. 2) is for
synchronization with class FP bulbs for
focal plane shutters. Theγhave a long
peak that gives uniform illumination
over the entire image
，
at most shutter
speeds.
C. FRAMING
，
FOCUSING
AND DEPTH-Of-FIELD
CONTROL
1)
Single Lens Reflex System
The precision ground ALPA prism
provides a reinverted groundglass
image of exactlγ25 x35 mm
，
i.
e. 24 x
36 mm less a 1/2 mm safetγmargin on
each side. This corresponds to the 23 x
35 mm frame of standard slide mounts
，
so that there are no cut-ofts on the
projection screen
，
which guarantees
absolutelγaccurate composition.
The finest grain groundglass offers a
brilliant image in 1:1 LIFE size (with
standard 50 mm lenses). This means
that the image appears just as large as
the subjec
t，
when γou view it with your
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