10
J. USE OF LENS PANELS
Each lens has a defined image circle and viewing angle specified by the lens
manufacturer. The indicated image circle is defined by the circle containing
acceptable image quality, defined by the quality standards of the lens manu-
facturer. Cambo does not change these specifications. For detailed lens spec-
ifications users are referred to data provided by Rodenstock® or Schneider-
Kreuznach®. The maximum image displacement, to keep the image inside the
specified image circle, depends on the size of the image circle and the image
sensor used.
In this example we use a digital back with a CCD size of 48x36mm. When we
use a lens with a image circle of 70m, like the Rodenstock® 5,6/23HR Digaron-
S, the maximum horizontal shift is 6mm (to either side) and the maximum rise
or fall is 7,5mm. When we use a lens with a image circle of 90m, like the Schnei-
der® 5,6/35 XL Apo-digitar, the maximum horizontal shift is 17mm (to either
side) and the maximum rise or fall is 20mm.
36
mm
48 mm
17
20
6
7,
5
60L
43XL, 47XL, 120N, 150N
23HR, 28HR, 35HR, 60HR
28XL 35XL, 72L, 90N
32HR, 40HR, 50HR, 70HR
90HR
Schneider-Kreuznach®
Rodenstock®
0
0
