ROLLEIFLEX SL 2000F - Page 50

O
Completely
matt screen with
cross wires
(fi7.
50).
This
screen is
of use where
speed of action
is secondary
to
critically
accurate centering
of the image. Very
su it a b I e
fo
r
macro
p
ho t
ograp hy.
C
Special mattfocusing
screen with clear
centre spot
incorporating
a scale
(fig.
5I).The clear
centre spot is
idealforfocusing
the
aerial image
produced
by a
microscope
and other
applications
where a similarly
narrow
band
of imageforming
rays have
to befocused.
C
Specialfocusing
screenfor
use with endoscopy
having
clear centrefield
with
cross marks
(/iS.
52).
Fig.
50
Fig.
51
+
45
Fig.52