Right off the bat, one aspect of the camera that vloggers took notice of was the fact that the a6400 mirrorless camera can capture video clips longer than 29 minutes and 59 seconds. In fact, when I questioned Sony if it could capture longer video clips, a company spokesperson stated, “This camera does not have that limitation.”
The removal of the cap is welcome news for many videographers and filmmakers, who up until now had few options other than the Panasonic Lumix GH5, which could record video to the capacity of the memory card or until the battery runs out. Now, Sony’s a6400 can do so as well.
Another feature I found impressive and useful was the a6400’s updated Eye Autofocus technology, or Real-time Eye AF, which lets you lock focus on your subject’s eye and track focus as your subject moves, letting you follow the action and concentrate on composition. In my trial tests, it didn’t work every time, but I felt it worked in most cases. (In a few months, Sony will release a firmware update to allow you to use this tracking with pets.) There are other impressive features, as well, like the 11 fps continuous shooting with the mechanical shutter or 8 fps in silent mode.
However, it’s not a perfect mirrorless camera. For instance, it only provides one memory card slot, and it lacks sensor-shift image stabilization, which means you’ll want to be sure that most lenses, particularly telephoto and telephoto zoom, include optical IS built into the lens.
But overall, Sony’s a6400 continues the powerful and versatile feature set that’s found in the a6500 and a6300.