Hi Doug, thanks for the info.
Unfortunately these are with many, many very young and older children so I won't be allowed on stage due to 101 accidental reasons that are possible.
I really don't like the look of bright flash units and prefer the more dramatic stage look but am also desperately trying to keep the grain down low. Not the most flattering for very young ballet dancers - in this instance anyway.
Tricky I know. But I'm sure nothing APUG can't solve...