Distance Setting Ring - Praktica Super TL Manual

Wide range of PRAKTICA accessories.
Internal Measuring System of the
PRAKTICA super TL
The path of rays forming the image of the
object is conducted through the lens, by way of
the instant return mirror, the Fresnel lens with
focusing system, the pentaprism and the ocular
to the eye of the viewer. Focusing is performed
by rotation of the distance setting ring on the
lens mount with the aid of the focusing system.
Part of the light coming from the entire image
area is deflected from the path of rays of the
viewfinder to the photo resistor. Any light
particles outside of the image angle, which
might cause incorrect measuring, are thus cut
off. All correcting factors to be observed
hitherto for the use of filters, close-ups and
micro attachments are, in the internal metering
system, directly taken into account. The meter
reading is ammeter. Power source of the
exposure meter system is a mercury oxide
battery installed in the base of the camera.
Pressure on the meter key closes the measuring
circuit.
How the PRAKTICA super TL works
When the shutter release is depressed the
instant return mirror moves out of its viewing
position into picture taking position. At the same
time, the pressure diaphragm of the lens is
automatically closed down to the selected
aperture. As soon as the focal-plane shutter has
run down the instant return mirror springs back
into viewing position and the pressure
diaphragm is fully opened again. This means
that the finder image is - except for the moment
of the exposure - continuously visible. In the
single-lens reflex system - even if interchangeable lenses of extremely long focal lengths or close-up attachments are
being used - there is never any danger of parallax.
The finder image is somewhat smaller than the final negative. Everything visible in the finder image is sure to appear on
the film, which means that the finder image may be utilized to its very edges.
Abridged instructions
A) Opening the camera back
B) Inserting the film
Pull out rewind knob (18) as far as it will go. Place full cartridge into cartridge
chamber (21). Push rewind knob (18) in again. Push lower perforation of film
from above underneath the little support (24), across the transport sprocket
(27), place beginning of film strip on the core of take-up spool (26) as far as
marking point (25). Wire bracket (28) must not stand upwards!
Should the film show a pronounced tendency to warping we recommend to
additionally turn the knurled spool disc anti-clockwise till one of the catch
straps rests on the start of the film.
C) Closing the camera back
D) Setting the film speed
Lift setting knob (14) and rotate it either way.
The white dot (1) on the perimeter of the
www.praktica-users.com/cams/nova/supertlmanual.html 3/18