Thanks for those tests, Ken. While it's highly improbable Max received two bad lenses, it is entirely possible Max's body is defective. All I really object to are the number of comments that he is biased - after all, he purchased the camera with his own money, he spent hours trying desperately to get it to work, and he stands to lose a considerable amount of money from lost sales by his viewers. To be honest, I've owned five Panasonic cameras myself, and they've all been so reliable, that I could forgive Max for not entertaining the idea that his GH5 might be malfunctioning. It's also important to remember that several other testers have also found the AF unreliable, West Coast Media and Kai to name only two. And Max's tests were reasonably scientific in that anyone should be able to perform the identical tests at home. Anyhow, I was only able to watch your tests on my iPod, but that's reassuring news. Thanks.