Eye-Detection AF, specifically, has been tuned for improved accuracy and refined recognition of eyes in the scene and can also be used in conjunction with custom Wide-Area AF for different subject shapes and sizes.
A first for Nikon, the Z50 II is UAC and UAV compliant for live web-streaming. Additionally, you can now record 10-bit video internally with Nikon's N-Log LUT and use four new RED LUTs as well.