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Section 1
Introduction and Description
Contents Para
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Introduction
1 The Vision SD12 pan and tilt head is one of a range of heads designed for electronic news gathering
(ENG). It is largely constructed in aluminium alloy to produce a robust, lightweight unit. The unique
counterbalance system enables a variety of camera/lens combinations to be maintained in perfect balance
over the range of tilt movements. A maximum tilt angle of ±90° is available at intermediate loadings, whilst at
higher loadings the range of tilt motion is progressively reduced to ±40°. A graph is provided in Section 2
which illustrates the relationship between load and centre-of-gravity (C of G) and should be used to ascertain
the suitability of the head for any given combination of ENG camera, lens and accessories.
2 Drag is provided by the patented Vinten serial drag (SD) system. This combines friction elements,
which provide stepless adjustment over a wide range, and viscous fluid elements, which provide smoothness
and zero stiction. A wide variation of the drag setting to suit operator preference is available on both pan and
tilt axes and "whip" movements may be executed irrespective of drag setting. The pan and tilt axes are each
provided with a brake.
3 The head is provided with a 100mm ball base. An illuminated level bubble facilitates levelling.
Description
4 The Vision SD12 pan and tilt head embodies a spring counter-balancing mechanism, SD drag
assemblies for pan and tilt motions and a camera mounting plate.
5 The balance system is easily adjusted by a crucifying knob (3) on the rear face of the head. The control
compensates for differing platform loads by varying the compressive force on the counter-balance spring.
6 Both the pan and tilt mechanisms incorporate SD drag systems to ensure smooth movement of the
camera about these axes and are fitted with calibrated control knobs to adjust the drag setting. The pan drag
control (8) is mounted on the right-hand side of the head and the tilt drag (13) on the left-hand side. The whip-
pan facility is unaffected by the pan drag setting.
7 Friction brakes on each axis allow the head to be locked at any chosen position. The operating levers
for both brakes (12)(14) are fitted on the left-hand side of the head.
8 The head is built with a 100mm ball base but an adaptor is available for conversion to a standard flat
base. This adaptor permits mounting to a flat surface, either directly, using the tapped holes in the base of the
adaptor, or via a Vinten Quickfix adaptor.
9 A level bubble (5) is fitted to the rear of the pan housing and is provided with a touch-operated lamp.
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