Autofocus
I found that AF on the NX210 was much the same as on other recent Samsung NX models. Focusing is quite fast for a contrast-detection system, but it lacks the snappy focus of the current Panasonic Lumix G series and the Sony NEX cameras. That said, with the NX210 designed more for scenic and social photography, its AF should be fast enough to cope with any subjects moving at a moderate speed.