What is CSO? And how does it help?
Colour Seperation Overlay (CSO) is a commonly-used technique for combining computer-generate graphics with “real-life” film. In practical terms, it means that you can have most of your set exist entirely within the confines of a computer, without anyone being able to tell the difference afterwards. In turn, this means that anyone with an active imagination, a suitable drawing package and some free time can create masterpiece sets, animated activity, etc, that really could be used in a film. All without spending a dime*. (*Substitute for nearest local equivalent, if outside the US.