Couple of questions (hope they aren't too stupid) 1. Does buying a super fast SD Card make a huge difference? For example will a SD card with 45mb/s speed work that fast in an OMD or is this purely for using outside the camera when uploading photos. I never see this in manuals 2. Second photo relates to sports photography. Yes I know m4/3 isn't the greatest for this, but it is the only camera I'll have. Has anyone got experience of shooting with something like the 75mm Oly lens with the telephoto on and would this be better or worse than using the 45-200 Panasonic zoom for autofocus? Thanks in advance.