Quote: I don't know for sure, but I'd be surprised if many professionals really used JPEGs in preference to RAW because why on earth would they choose to throw away potential quality at the taking stage, knowing that it could never be subsequently retrieved?
Think about a sports tog shooting pitch side (with two cameras, one behind the net shooting wirelessly) and wiring shots back to the picture desk almost immediately. It makes far more sense for them to shoot jpegs than mess around with RAW files.