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ArcBody Movements
ArcBody Movements
The Hasselblad ArcBody has two camera move-
ment controls – shift and tilt. It is these two move-
ments that the ArcBody utilises to exercise control
over image shape and sharpness.
The amount of movement needed varies according
to the desired effect, there is no formula and each
case must be judged accordingly by what is seen on
the focusing screen. Certain restrictions apply
however regarding the possibility of vignetting.
Normally this is immediately apparent in the view-
finder and you would therefore take the appropri-
ate steps to make corrections. If you prefer, the dia-
gram 'S+T' at the end of the illustration booklet
provides a secure and convenient method of check-
ing. The vertical axis represents the amount of shift
in millimetres while the horizontal axis represents
various amounts of tilt in degrees. The shaded are-
as represent vignette free shift and tilt combina-
tions.
Cross reference the amount of shift in millimetres
with the amount of tilt in degrees applied to see
whether vignetting is likely to occur. The diagram
assumes the lens is focused at infinity and the aper-
ture set at f/16 and positive tilt occurs when the top
of the rear standard is tilted away from the lens when
the camera is in the upright position.
Example: When using a 35 mm lens, the rear
standard is shifted 15 mm and tilted +7˚ without
problem. When the shift is increased to 20 mm
while maintaining the +7˚ tilt, vignetting occurs.
Vignetting caused by accessories should be checked
separately.
Certain combinations of shift and tilt
are not possible owing to the con-
straints of the bellows. Try to find a
compromise combination instead.
See later section on camera movements in practice
and their effect on the image.
Shift
To lower the camera back, loosen the red shift con-
trol locking levers (clockwise) and rotate the shift
control clockwise. Use the appropriate correction
slide (see relevant section), if necessary, to improve
the brightness of the image. The amount of shift
can be read off the shift scale.
The back can be shifted downward approximately
28 mm from the zero position. To produce the op-
posite result, namely to shift the back in an upward
direction from the zero position, then simply invert
the camera using the 47033 Camera inverter
mount.
Tilt
The camera back is tilted by loosening the red tilt
control knob locking levers (clockwise) and then ro-
tating the tilt control. A clockwise movement of the
control causes the top of the rear standard to move
towards the lens and the bottom of the rear standard
to move away from the lens. Rotating the control in a
counter-clockwise manner will produce the opposite
result. The tilt scale displays how much tilt has been
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