Hmmm. Most of my scenes are either late evening, or foggy mornings. Realism there isn't hard to reach, doesn't even have to be detailed. On the flip side, one scene that is in my head, was on a late afternoon glider flight, I looked down to the area north of me and saw the south Milwaukee area with the little patches of ground fog. Quite a sight from 3000 feet, but one that I have been unable to reproduce well enough that I could say I like it. My guess, realism is called for sometimes, others, it isn't important.