Hi all. I have a F70 for 1 month. I have only shot 1 roll and only 5 or 6 photos with flash but I haven't see the short flash light for control (I don't know how say "detellos de control" in english, excuse me) before the shot. It's suposed that the flash must emit short flashes before the shot to evaluate the proper light. I have use the 3D matrix mode with the incorporate flash in P mode with a 38-80 D lense. How must it work?. Thanks in avance.