Ensure Face/Eye AF Priority is "On" to automatically detect and focus on human or animal eyes.
The a6400 bridges the gap between beginner and professional gear with its "4D Focus" system and robust build. 24.2 MP APS-C Exmor CMOS sensor. sony a6400 camera guide
Set to RAW (or RAW+JPEG) for maximum editing flexibility in post-processing. Ensure Face/Eye AF Priority is "On" to automatically
Use AF-C (Continuous AF) paired with "Real-time Tracking" to stay locked on moving subjects. sony a6400 camera guide