Yes, B5 is filmed widescreen, the full horizontal range restored
by going back to the original negs. (After coming back from Wolf 359 I'll
actually get to see a full-widescreen version at WB.)

You can get screwed in widescreen sometimes; I had the regular
aspect ratio of Cabaret, searched for the wide, found it...and discovered
that when they ran it in theaters, they just masked off the top and bottom
of the frame for the widescreen effect, and the regular aspect ratio was
the one where you could see all of it, not the wide.

One reason there's no diffusion in space is that there's no
atmosphere in space to PROVIDE the diffusion; haze and the like is a
atmosphere effect.

jms