Cambo WDS-619 Main Operating Instructions - page 2
J. USE OF LENSPANELS
In order to take the most advantage of the lenses that are used, please understand that every
lens has a limited image circle and viewing angle specified by the lens manufacturer.
Generally the indicated image circle is what the lens manufacturer has defined as committing to
the quality standards for that specific lens. Cambo does not change these specifications and users are
referred to Rodenstock
’s and Schneider’s information about these lenses.
Some specific notes on a few lenses:
WDS-544 uses a Rodenstock 5.6/23HR Digaron-S, image circle limited to 70mm, which means limited
shift possibilities, depending upon cropping. There is not yet a centre-filter available.
WDS-545 uses a Schneider 5.6/24XL Digitar, image circle limited to 60mm, which means almost
no shift possibilities, nevertheless depending upon cropping. There is a centre-filter available.
WDS-546 uses a Rodenstock 4.0/28HR Digaron-S, image circle limited to 70mm, which means limited
shift possibilities, depending upon cropping. There is NO centre-filter available.
WDS-551 uses a Schneider 5.6/35XL Digitar, image circle limited to 90mm, which means about
18mm shift possibilities, depending upon cropping. There is a centre-filter available.
WDS-552 uses a Rodenstock 4.0/35HR Digaron-S, image circle limited to 70mm, which means limited
shift possibilities, depending upon cropping. There is NO centre filter available.
For all other lenses above 35mm focal length there is no need for a centre filter.
K. WTS TILT-SWING LENSPANELS
Refer to paragraph 3.A for mounting the panel to the body.
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 2 adjustment knobs, top knob T for tilt, side knob S for swing.
The lens plane and CCD are parallel when the tilt and swing 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 knob T, to apply swing only use knob S. When needed, a combination of both can be
applied.
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.
We refer to the user manual of your specific digital back manufacturer to use the software tools provided
with your digital back.
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NOTE: DO NOT force
beyond the +5/-5
boundary marks.
!