Canon EOS-1D X Mark III review | Digital Camera World
It's utterly insane. In terms of communications features, the EOS-1D X Mark III boasts built-in Bluetooth and 2.4Ghz Wi-Fi, as well as gigabit ethernet that supports standards including 1000BASE-T. However, unlike the Sony A9 II, it doesn't feature 5Ghz Wi-Fi – you'll need to buy the separate WFT-E9 module for that.