Bit of an odd question...im getting a new lens, big zoom. Im thinking of oing to the greyhound racing...not sure if that is a sport in the USA?? Anyhow mostly it takes place in the evening and at this time of year in the UK its dark, so strong floodlights light the track and animals from above. Is there any special considerations for such conditions bearing in mind the dog are fast so either panning or fast shutterwill be needed freeze the hounds!!!!