Aerial Cinematography: Ball Mounts

Pros

Ultra stable for plate-quality images even in very windy conditions.
Many have built in speed aperture computers for frame rate ramping with constant exposure.
At least one of these systems provides GPS positioning and microwave transmittability for wireless operation from another aircraft.
Most can be used for non-aerial applications such as on cranes and camera insert cars ( with a jib arm of some kind).

Cons

Gyros may require a minute or two after each take to re-orient themselves. This is more of a fact of life than a con, but it is worth repeating.
Large size can create drag on the aircraft and the system itself at high airspeeds.
Cannot be reloaded in flight on helicopters.
Unseen trapped insects can find their way to the port glass when inflight. Care must be taken during reloads to check before replacing the shroud.
Most mount vendors mandate the use of their in-house operator over an aerial cinematgrapher who might be thoroughly checked out on the system. Make sure you check with each vendor.

Ball Mounts

So-called due to their spherically shaped wind shroud--most of those shown here without--, ball mounts offer rock steady gyro stabilization. Most of the larger systems are designed primarily for film work. Their size accommodates the film camera and 1000' magazine while allowing full pan and tilt movements.

There are also systems designed for ENG work with some even incorporating infrared cameras. However, these latter types are primarily for law enforcement or military applications.

Installation is usually carried out by the camera operator or aerial cinematographer and the camera technician. If the operator is required at a production meeting, steps should be in place to provide at least a P.A. to help with the process.

During the filming process the aerial technician can provide focus pulling duties as well to the normal camera and magazine reloading. Some flight situations may--hot and high--may require the camera technician to remain behind on the ground.

It's important in this situation that the aerial cinematographer be thoroughly trained on the system as all focus duties will be performed by that person in addition to the normal operation.

The mounts listed here are only a sampling of what is available. Some of these vendors have more than one type of system so be sure and visit their Web sites for a complete, up to date listing.

Also, be aware that the bracketry for these mounts requires a specially modified aircraft. You cannot just fit these systems to any ship. Make sure you work this out ahead of time with each mount's vendor or the aerial coordinator as they will be able to help you locate a compatible helicopter.