Agreed that for moving children (as in running, jumping, fidgeting, etc.) a DSLR or one of the ultra-fast contrast detection systems like the E-M5 will be better, but if teefin1 is referring to the same thing I am, it was with a still subject - there just wasn't enough contrast in a face/eyes for the AF to lock on. At first I thought it was the lower light, but when I changed the focus point to the clothing the camera had no problems. I'm not giving up on the camera and intend to work on it for a bit to see if I can improve my proficiency in using the AF , but I see how it can be disconcerting, especially if you only have a few days to make a determination as to whether or not to keep the camera.