When you start playing with 3d or photoshop the line between reality and fiction quickly get blurred, and the potential for misleading people. I recently attended a forensic animation class, and one of the things that the instructor stressed was that you do not want animation to be too realistic, for exactly that reason. In fact, if an animation is too realistic it may not be admissable in court at all. On the other hand, as otaku says, it is accuracy that is important - and if you need detail in the thousandth of a millimeter or inch, Poser won't cut it like a higher end animation program will. Poser is great for constructing characters, but you'll probably have a much easier time with production, and with admissability, if you use the lower polygon characters. At least it will be clear to the jury that it is a representation of an event, rather than misleading them into thinking that is the actual event itself.