I have a Canon T3i and 2 young kids. AI servo is the right idea in theory, but on even a lower-end DSLR it just doesn't help much. If a kid is running towards the camera, it will keep refocusing as the subject moves, but it's always focusing on where the kid was a split second ago.
IIRC the higher-end cameras have algorithms to track the subject and predict where the subject WILL be and focus accordingly. However, I have many friends with Mk III's and they say it's a very hard problem that even the high-end DSLR's don't solve. As you can imagine it's not actually a solvable problem with the present AF latencies as the subject can change course after the algorithm guesses. And when you're shooting shallow DoF even a small mistake will kill the focus on the shot.
The question is whether the Lytro can operate at 1/200 or faster to solve that problem. The specs say 1/4000 is max shutter speed, but IIRC the actual capture speed isn't that fast...
IIRC the higher-end cameras have algorithms to track the subject and predict where the subject WILL be and focus accordingly. However, I have many friends with Mk III's and they say it's a very hard problem that even the high-end DSLR's don't solve. As you can imagine it's not actually a solvable problem with the present AF latencies as the subject can change course after the algorithm guesses. And when you're shooting shallow DoF even a small mistake will kill the focus on the shot.
The question is whether the Lytro can operate at 1/200 or faster to solve that problem. The specs say 1/4000 is max shutter speed, but IIRC the actual capture speed isn't that fast...