The Olympus OM-D E-M1 Mark II was introduced 3 years after its official predecessor, the regular E-M1. The E-M1 lacks the High Resolution mode, and also the 4K movie recording feature, which the Mark II has. The Mark II only has phase detection AF points, the regular E-M1 has both contrast- and phase detection AF points, but it can only use one type at once. According to Olympus, the Mark II's autofocus is six times faster and also more accurate than its predecessor's. The older model only has one memory card slot, the Mark II has two, and it supports UHS-II also, unlike the E-M1. The Mark II has a slightly larger and differently textured grip.