Nikon launches finally its full format mirrorless cameras. The Nikon Z6 and Z7 innovate with a new very large size new mount called Z, an excellent viewfinder and very high level lenses. All elements to compete with the third generation of Sony A7 and A7R present since 2013. Despite some mistakes of youthness, Nikon has strong arguments to quickly be a major player in this market, only the price of its lenses and the commercial power of Sony may hinder it. If case of rapid success, the Nikon D6 could be an mirrorless camera and new Z models could be quickly proposed in 2019.