Attached Link: http://www.3dmenagerie.com/goodies/tut/azimuth.htm

Hi Luca, Err..what attached image? ;) Anyhow, I'm not so sure I understand what you're asking, or what you're planning, but it sounds cool to me. :) The link above is to an azimuth tutorial bloodsong made, so that might help some. I personally like a camera focal lenght of around 22-27 mm for landscapes, though I usually just "wing it" and go with whatever looks good. Combining focal length with panoramas can be trick, though, since it all changes as you change the aspect ratio of the pic...in other words, just go with what you like, and what you think looks good. if you go with a panorama, I'd say, make it no more than 120 degrees. If you're camera gets off level, it will play hell with the horizon, so be careful about that too. In all honesty, I for one, rarely concern myself with such technical details as pitch and azimuth, and in the end, I just set up a scene to where it gets what I want to see, and any and all panoramic/focal length/sun settings are done on the spot, without thinking in terms of degrees, or anything having to do with anything technical. I put alot of thought into things such as materials and lighting, but that's about it....