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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
Schneider® 5,6/35 XL Apo-digitar, the maximum horizontal shift
is 17mm (to either side) and the maximum rise or fall is 20mm.
K. WTS TILT-SWING LENS PANELS
The WTS panel allows an angle adjustment between +5 and -5
degrees in both swing and tilt direction for setting Scheimpflug
corrections. These can be used separately as well as
simultaneously, using the 2 adjustment knobs. The lens plane
and CCD are parallel when the tilt (T) and swing (S) indicators are
set to zero on the scale. This zero-position is reached when the
bearing snaps into the lock, where the drive knobs become
slightly loose by purpose.
To apply tilt only use tilt knob, to apply swing only use swing
knob. When needed, a combination of both can be applied.
Note: do not force beyond the +5/-5 boundary marks.
L. LENS CAST
Under certain circumstances there may be occurrence of lens
cast, caused by the light striking the CCD under an angle due to
either shifts or very short focal length. The effect may differ
quite a lot from one CCD to another and is not a constant factor.
This effect is acknowledged by all digital back manufacturers and
each have their own software solution for this.
Summary of Contents for Wide RS 1600 Series
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