User Manual
Page 118
... to focus on an unintended subject. [Tracking sensitivity] is more prone to continue focusing on the closest subject. Suitable for moving subjects in the EOS-1D Mark III/IV, EOS-1Ds Mark III, and EOS 7D. 118 Also effective when you want to switch and focus on subjects at different distances that are covered by the AF points. The...
... to focus on an unintended subject. [Tracking sensitivity] is more prone to continue focusing on the closest subject. Suitable for moving subjects in the EOS-1D Mark III/IV, EOS-1Ds Mark III, and EOS 7D. 118 Also effective when you want to switch and focus on subjects at different distances that are covered by the AF points. The...