Green Screen

Chroma key is a technique for mixing two images or frames together, in which a color (or a small color range) from one image is removed (or made transparent), revealing another image behind it. A Green Screen is commonly used as a backdrop because it is the opposite color of human skin and therefore a little bit easier to key out.

Jib

A jib is useful for getting high shots, or shots which need to move a great distance horizontally or vertically, without the expense and safety issues of putting a camera operator on a crane or laying track for a dolly. A jib can even be mounted on a dolly for shots in which the camera moves over obstacles such as furniture, when a normal dolly shot could not be used.

Steadicam

A Steadicam is a stabilizing mount for a motion picture camera, which mechanically isolates the operator’s movement from the camera, allowing a very smooth shot even when the operator is moving quickly over an uneven surface.