Canon EOS-1 DX Mark III Advanced User's Manual page 951

Autofocus (viewfinder shooting)
Focus method
AF points
Focusing brightness range
Focus operation
AF area selection mode
Subject detection AF
AF Configuration Tool
AI Servo AF characteristics
AF fine adjustment
AF-assist beam
TTL secondary image-registration, phase-difference detection with the
dedicated AF sensor
191 points max. (cross-type AF points: 155 points max.)
* Number of available AF points, Dual cross-type AF points, and Cross-type AF points
vary depending on the lens used.
* Dual cross-type focusing at f/2.8 with center AF point
EV –4 to 21 (with the center AF point supporting f/2.8, One-Shot AF, room
temperature, ISO 100)
One-Shot AF, AI Servo AF, manual focusing (MF)
Spot AF (manual selection), 1-point AF (manual selection), AF point expansion
(manual selection, vertical/horizontal), AF point expansion (manual selection:
surround), Zone AF (manual selection of zone), Large zone AF (manual
selection of zone), Auto selection AF
EOS iTR AF setting (can recognize color information, faces, and heads)
* iTR: Intelligent Tracking and Recognition
Cases 1–4, Case A
Tracking sensitivity, Acceleration/deceleration tracking
AF Microadjustment (All lenses by the same amount, Adjust by lens)
Fired by an external flash unit for EOS cameras
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