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2
1
10
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LONGITUDINAL POSITIONING
(Ref. Figure 10): Choose a frame that contains both a near object "1" and a distant object "2" situated along the same vertical line of vision.
1.
(See Figure 10A and 10B): unscrew knob "W" and move the camera on the vertical plane to bring the two objects first to the top and then to the bottom of the frame,
checking whether the height gap "Y" between the two objects varies in the two frames: the more constant the distance remains, the more accurately the "Nodal Point" has
been positioned.
2.
For optimum results, make minor adjustments by moving plate "F".
Once the right position is achieved it is VERY USEFUL to memorise it by noting the position of the plate "F" on the index on the graduated scale.
W
10
Y
F
10A
Y
10B
8
ACCURATE POSITIONING
2
OF THE "NODAL POINT"
If the scene being shot contains objects at
varying distances from the point where the
shot is being taken (close and distant
1
objects), the "Nodal Point" needs to be more
accurately positioned as follows (this
procedure is possible ONLY with reflex
cameras ):
Note:
-
FIRST ADJUST LONGITUDINAL
POSITIONING
-
ADJUST LATERAL POSITIONING ONLY
WHEN LONGITUDINAL POSITION HAS
BEEN SET
2
1
10 11
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