Exakta RTL 1000 User Manual

Focusing with focusing system
(Fresnel screen) :
Image-
brightening
Fresnel screen
Circular mark
Pointer of mea-
suring device
Annular field in
the ground-
glass screen
Microprism
The EXAKTA RTl 1000 may aptianally be supplied
with a focusing system in all its viewfinder units.
With this focusing system, a sharp image is mainly
obtained using the annular field in the ground-
glass screen (far moving subjects, phatographs
taken with a magnifier, and photomicrographs).
To increase the accuracy of focusing or in case of
slowly moving and stationary subjects focusing
is performed by means of a microprism field. In
case of incorrect focusing the microprism field will
show an image which in blurred to a greater
degree (the blurred image "flickers") . The lens
will be correctly focused when the image in the
microprism is at its sharpest (i. e. no flicker effect).
It is however. absolutely necessary to focus with
a large diaphragm opening (small aperture
number) (this is important above all in case of
lenses without internal release). With apertures

Exakta RTL 1000 Specifications

General

Brand	Exakta
Model	RTL 1000
Category	Digital Camera
Language	English