The Sony Alpha a6400 is an advanced compact mirrorless camera and an update to the a6300. Key features include:
24.2MP APS-C sensor and BIONIZ X image processor
Extremely fast and precise hybrid autofocus system
Internal 4K video capture, S-Log3, S-Log2, and HLG
2.36m-dot OLED EVF, 3.0-in. 921.6k-dot tilting rear touchscreen LCD
You must use a U3 SDXC memory card for 100 Mbps 4K capture.