Went online to look for a comparison but could not find one, so here goes: If you were to compare the new SIGMA 50mm F1.4 EX DG HSM for Four Thirds System VS. the Olympus 50MM lense. Which lens do you think will still Autofocus quicker? I am primarily going to base this on Indoor Fashion Shows so the Autofocus will be on continuous mode. I guess I just want to know if the Olympus lense Autofocus motor will still be faster than the NEW Sigma 50MM lens. Thanks for any input!