Originally Posted by
GrahamH
If this location is typical, unless there is a large white wall behind you to bounce the light off, the increase in size of illuminating light source using a light sphere (or equivalent) is minimal compared to no light modifier (a point made several times already). As such I would not expect any significant difference between modified and unmodified light. Perhaps just a blip of direct flash to mitigate the racoon look.
If no light is reflected as a result of using the modifier, then there is no benefit. Disadvantage is in recharge rate and the possibility that not enough light is reaching the subject.
I have seen many people use this type of modifier (most recently Thursday at a fund raiser, large room, black ceiling, white wall BEHIND subject, not behind camera), and when I have seen the end result, there is no difference in image with direct, unmodified flash.
Only advantage I can see, in these circumstances, is that it looks more impressive. And that may be a useful trait.
Graham