No way, the the shutter speed can't be over the max flash sync speed because the flash or the Elan II don't let me. The hi speed switch on the flash was off ( I took the picture indoors where the ambient light was medium level). I can't remember the shutter speed but I think it was 1/30 or 1/60 and the mode was Av, Tv or M, sorry. And I can't remember if the position of the flash head was horizontal or 60 degrees. I must do more experiments with the gear. Anyway, the 420 EX is full auto.