Olympus OM-D E-M5 Continuous AF w/ 3D Tracking
Hot, hot morning = heat distortion (amplified by a 4° angle of view)
Forgot to turn off IS1 (genius)
3/23 frames are legitimately out of focus, a couple more are soft or blurred thanks to heat distortion or Image Stabilization being on the wrong setting.
That's 87% accuracy.
Gearheads, view the 14.25mb 8000px original size on your blazing fast internet: