You know a photographer?
Wud - is your question about how a beauty dish would perform with a flash as opposed to a strobe?
Am not even certain that they make beauty dishes for flash...
the backside of the BD is built to be attached to a strobe..
also i don't think the flash output would have sufficient power to actually utilize the effectiveness or the 'beauty' of the beauty dish.
if you use an octogonal softbox (the deep throat kinds), you can come very close to matching the effect of a BD
You get this attachment, which let you use it with a speedlight. A video here, if you go to minute 8, you can see the final image: How to use a beauty dish with a speedlite - YouTube
Won't an softbox be more or less similar to umbrella? I am looking for something which could help me create more shadows in faces.