From my initial outings, Subject Detect feels a bit less sticky, and has more of a tendency to wander off the detected bird. Shooting in 3D Tracking (on shutter button) and Wide Area (Small). Both modes felt a little uncertain compared to 2.11. Another observation: there were instances where if I didn't have the AF box exactly over the subject, and there was an object closer to me (a twig/leaf), the AF would pick it up instead of jumping to the background, which tells me that it's now more sensitive to objects in the path, and this is a good thing.
So it feels like they traded some AF stickiness for more nimbleness. I adjusted blocked shooting from the default middle setting up a few notches (more sticky) to see if that helps.
So it feels like they traded some AF stickiness for more nimbleness. I adjusted blocked shooting from the default middle setting up a few notches (more sticky) to see if that helps.