Hi, Could you comment on the fan-like humming noise problem in the X-T4 and, I guess, also in other IBIS Fujifilm cameras? I just bought a used X-T4 and noticed this noise. In a quiet room, it is audible and is recorded by the internal microphones on the film. I found user statements that this is IBIS related and normal. Is indeed this noise a normal phenomenon? I cannot find a definitive answer. I haven't seen any review so far that mentions it.