When I use the 14-54 II on the E-M5 there is a delay due to the aperture control (besides the slowness of the CDAF) which is longer at the wide end of the lens & less when at the telephoto end, regardless of the aperture setting. As the E-M1 uses PDAF with this lens I would like to know if there is still a delay with the aperture control or if it operates the same as if on a DSLR (E30) with no noticeable delay due to the aperture control. It is specifically this Mk II lens that I would like to know how it performs as I hope (yes, hoping) to get the E-M1 & to use this lens on it (besides others), but to be able to use it without delays that lets any subjects move out of the frame before the exposure has happened. EDIT: In other words, will the E-M1 do 10 fps with Hi Drive Mode sequential shooting using MF in Manual mode (to eliminate any other factors) at 14mm & 54mm? Thanks for any feed back.