查了一下canon官网,确实如此: " The EOS-1D X uses the 100,000-pixel RGB Metering Sensor to aid the AF system in Automatic Point Selection. This dramatically increases the tracking performance for subjects that were previously unpredictable to follow, such as fast-moving or flying subjects. EOS iTR (Intelligent Tracking and Recognition) AF recognizes the subject based on face and color detection from the AE system, and tracks it using AF points. The EOS iSA (Intelligent Subject Analysis) System incorporates color recognition and Face Detection for proper exposure. Specific parameters can be adjusted and refined and saved in the AF menu for later use. "