Let me summarize this description theme, to see if I, as a reader (both in general as in this tthread) understood your points - or, as Winterfox put it, whether you failed or not!? <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" /> Which is of course not all factual, as I am making interpretations and am deducing things from your writings.
1. description for support of plot or characterization - mandatory requirement, but should be limited to the details on a "as and when needed" basis.
2. description for "ambiente" - a difficult decision between "I want the reader to see the world, as I see it" and "The reader is free to fill any gaps, that I leave for his imagination".
Mark, I am not judging any side in particular. I have read examples of both, and I can enjoy either. However, if the author leaves room for imagination, my mind will go astray, which implies the risk of differing views between author and reader, which could (though not always does) lead to irritations on the reader side.