I haven’t tried these nor do I know much about scripting Second Life™ cameras or making machinima. Yumi Murakami however seems to know a bunch. Yumi has posted scripts for the Bijocam on her Wiki User Page. See: User: Yumi Murakami/Bijocam And Other Camera Scripts. Scroll down to get to the scripts.
M.A.G., Machinima Artist Guild, has an article about the BijoCam Construction System. This is an old article from back in 2009. At one time the Bijocam was in XStreet, the old market place for SL. You won’t find it on the current SL Market Place. Yumi released the source code August 7, 2013 and no longer sells the camera system.
In world I find the NeoVictoria SkyMall has a 3 part video tutorial on using the camera and controls. Visit the Machinima InfoHUB. These appear to be old video from the way things appear in SL. But, then the camera is old too.
You’ll find explanations of what the various LSL functions in the script do with the camera in the Wiki Category: LSL Camera.
Yumi added some new code, or at least newer code that was not in the BijoCam package.
I would think this would be something handy for any Machinimist. I am certain I’ve seen machinima made using these camera controls…