Gyro Stabilized Camera Guidance Issues
You want to avoid over controlling
an inertial stabilized system. You want just enough control to make it do what
you want it to do. Obviously a large system will need a heavier hand than a
4lb consumer camcorder.
Consider this increase in control
1. Finger tips at or near the CG.
2. One hand around the post at or near the CG.
3. Two hands at some distance and symmetrical in line with the CG.
This progression is related to the
weight of the system and how much control is needed considering the roughness
of the vehicle supporting the rig. Over smooth ground fingertips may be enough
control, but over rough ground two hands at a distance might be needed. When
rough terrain is encountered and shooting is not possible, the camera has to
be protected. After the rough terrain, the operator has to remember to return
to lighter control and not continue to hang on tight.
The type of isolation system is also
relevant. If the supporting vehicle or operator is on rough ground or in rough
air you will need lots of freedom to move in and stronger resistance in the
You might consider heavier weight
second stage restraint in case the vehicle does a violent move. Light weight
isolation for shooting and heavier for safety. Of course shooting would be unusable
during a rough section, but the equipment and operator would be protected. Heavier
springs, bungee, or exercise tube could be provided to "kick in" if
a hard bump or pocket of air was encountered. With support from below the same
second stage resistance should be considered.
Some flex in the guidance system
hardware is okay, but avoid any flex between the gyro and the camera.
If two hands are used, they should
be equally distant from the CG and symmetrical in line with the CG. It is better
hands are at right angles to the lens of the camera. If the hands are offset
because the zoom control is forward as it is on a video camera, hold the camera
with the left hand opposed and to the rear so the line between the two hands
passes through the CG of the combined camera and gyro/s. The VX1000 places the
hand strap and zoom control in line with the CG, but few other cameras do. If
you use an accessory zoom control, it can be placed in line with the CG with
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