D4 Firmware 1.1 update and trap focus
With the AF-S setting as you describe you need to actually acquire focus at the desired distance before recomposing and waiting for your subject to then arrive at the desired point of shutter release- the trap!
It is easy to test before you head outside, focus on some object such as a chair, move camera slightly so as to have nothing at desired focus distance, press shutter and pan back to object of focus. Release will occur when the subject is at the preset (primed is the term in the previous link) distance.
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