The jit.gl.camera object allows you to define an OpenGL view. The view can either be directly rendered to an OpenGL drawing context or can be captured to a texture for further use.
Jitter Tutorial 32: Camera View gives a good introduction to working with cameras in Jitter. The tutorial uses the default camera associated with jit.gl.render, but the information applies to jit.gl.camera as well.
With the help of jit.gl.node, it is easy to use multiple jit.gl.camera objects to view an OpenGL scene from multiple perspectives at once. In addition to multiple viewing positions and angles, each camera can have unique attributes for how it views the scene, such as field of view and clipping planes.
This patch uses four cameras to view all sides of a simple environment rendered to a jit.gl.node, then passes each cameras view out to be rendered on separate video planes:
You can find several interesting patches that make use of jit.gl.camera in the example patches included with Max:
(please list things that you believe to be errors or omissions from the existing refpage)