As I said it was only a trial. I've tried a few effects like fog and media, and found that they have some limitations. The emission media effect is cool IMO, but it requires an object behind it to work. Also I could not make objects transparent in fog, there were always some strange artifacts around them. For this, the "interior media" (particles within objects) did not work together with the simple fog effect, etc.
Anyway I've just tasted the prog.
What I'm curious about is, if others are using POV-Ray in this community, and if it has some advantage over the 3DS or TS renderers.