Originally posted by UncleVanya I am still not convinced there wasn't another source of light (second flash or more ambient light than estimated) but it is pretty clear from catch lights and reflections the direct flash output was at least partly there.
There are so many pictures now, but from the masquerade party ones, I don't see any evidence of a second light source. In post #23, you can see the ambient pot lights in the 1st and 2nd photos, they're weaksauce. In the 5th of that post, see the deep shadow of the gold-masked dude.
In the ones with the mirror-wall visible, you can see how dark the room appears. Depending on how things were aligned, you may also end up with a bunch of backlight off the mirror from flash pointed forwardish and also from the reflection of what you were bouncing off the ceiling.
Was there a particular photo that you think looked like multiple light sources?