I have a 4/3 Zuiko 40-150, and find that the AF is slow. Does anyone know if the native m4/3 longer zooms focus any faster? If so, which lens focuses faster, the M.Zuiko 14-150 or M.Zuiko 40-150 or Panny 14-140 or 45-200? Anyone want to take a shot at ranking them from fastest to slowest ? 14-150 MZuiko 14-140 Pan 40-150 MZuiko 45-200 Pan 40-150 Zuiko 4/3 Thanks!