Orionid said the sun could be used if it were used in a way that still led to a low key image with lots of contrast and darker tones to it. I’m torn on Mopsy’s, but because there are darker tones I’m currently letting them stand for that reason.
However, if orionid can give a ruling on reflectors/umbrellas counting as a second light source, that would probably be helpful. In this case, the light was used both un-diffused from behind, then diffused in the front as it was aimed into the umbrella from behind. To some extent, reflected light could be difficult to avoid, depending on the space you’re in since the single light source could bounce off walls. But in this case, it was used intentionally to skim the back of the head, then reflect into and back out of the umbrella as a secondary/fill light. My understanding of orionid’s intent was to avoid fill, but please please please jump in on this one, orionid]!
