“The EOS-1D Mark IV, released in small quantities towards the end of December 2009 and shipping in somewhat greater volume now, is meant to erase the memory of the design, manufacturing and quality control problems that plagued its predecessor. It's also meant to once again put Canon's flagship action camera on a competitive footing with Nikon's newest digital SLR, the D3S, and do so in time for the start of the XXI Olympic Winter Games (which kick off tomorrow in Vancouver, Canada.)
In just over a month with the new model we've seen that the EOS-1D Mark IV's AF system behaves almost nothing like that of the EOS-1D Mark III. The changes that Canon's autofocus engineers have made are both broad and deep.
But, do these changes make the EOS-1D Mark IV's AF system better, particularly for shooting a variety of outdoor and indoor peak action sports in AI Servo AF mode? More importantly, do these changes make the EOS-1D Mark IV a viable option for the sports shooter who depends on solid, reliable autofocus to get their job done?”
(Photo credit: snap from the article – copyright retained by Rob Galbraith)