- 4 -
Control
Priorities
No changes have been made to the normal joystick operation and the system is rigged in the
normal way, with a joystick controller. Positional commands are automatically recognised
and it moves as commanded. However the operator can take control with the joystick panel
at any time.
On a position-based application this allows for the operator to correct for artists being out of
position, or for live action following. Control will revert to position control when there is no
operator input
AND
a new position is received.
This also allows for the iris to be operated by a vision engineer, rather than the positional
controller. If the Iris position remains constant the unit will not revert to Iris (DMX, Free-D or
Mstar) control and the vison engineer will continue to have control. The same applies to
Focus and all the controlled axes.
Joystick Control
When using the joystick to control the camera there are a number of settings that can be
used.
Pan & Tilt Directions
– These can be changed using
the PT Reverse command in the
Setup
menu. This
command will cycle between the 4 combinations of
Pan/Tilt directions.
Zoom & Focus Reverse
– These can also be
changed from this menu.
Pan & Tilt Speeds
– When adjusting the Speed
knobs the display will show the speed settings.
Speeds 1, 2
& 3
– In any of these 3 speeds the pan & tilt speeds are proportional to the zoom
angle. ie. If the zoom is wide the speed is higher. When you zoom in the pan & tilt speeds
reduce to help with smooth camera control.
Speeds 4
– 10
– These are fixed ‘gears’ and do not change with the zoom angle.
DMX control
DMX
Control of the Camball4
is input via the Dsub connector. A DMX input cable is supplied
with the unit.
When used as an ‘Auto Tracking’ camera it can follow the designated artist extremely
smoothly, including zoom & focus. This has been made possible with the
Predictive Move
Smoothing (PMS)
algorithm, which smooths the moves and also copes with missing data
packets.
During a move, the
PMS
routine does not wait for a new position before initiating a move to
that new position. Rather, it predicts the next position, based on the trajectory of the previous