Sony packed serious phase detect AF into these new 4K palm-style camcorders

If you've used a palm-style camcorder to try and film action at any point over the past several years, you've probably noticed an issue: most of these camcorders are god awful at finding and holding focus, usually relying exclusively on contrast detect AF. Well, not anymore. Sony has just debuted three new 4K camcorders aimed at three different tiers of users, but all of them have one thing in common: blazing fast, 273-point phase detect autofocus systems similar to (and, in fact, a bit more adv...