AF points and invisible AF points
: Sensitive to f/2.8 Assist AF points
: Sensitive to f/5.6 Assist AF points
as the EOS-1D Mark II camera. Seen in its totality, this is groundbreaking performance: top-of-the-mark image quality in a beautifully balanced package for thousands less than ever before.
Sophisticated The EOS 5D camera has a new 9-point AF unit New AF System with six Supplemental AF points, a new AF
algorithm and new AF circuitry. The new AF system improves subject detection and focusing precision at the center, the most frequently used area, and significantly enhances subject tracking performance. The nine AF points are concentrated at the center, but the extreme left and right AF points are located in the same positions as the corresponding AF points on the EOS-1Ds Mark II. In addition, the six Supplemental AF points, grouped around the center of the image, provide highly accurate focusing and do an especially good job of tracking the subject in the AI SERVO AF mode. These Supplemental AF points are not visible in the finder and cannot be selected manually, but they can be seen in the ZoomBrowser or ImageBrowser software. They are used during automatic AF point selection (AF calculation speed and accuracy are as good as, or better than, the EOS 20D’s) and as AF area expansion points when the center AF point is selected in C.Fn-17-1, “Expanded AF point activation area.” They do not function in the One-Shot AF mode.
AF sensor positions
f/5.6-sensitive major defocus detection sensor
f/2.8 / f/5.6-sensitive sensor
f/5.6-sensitive sensor
AF sensor
Intermediate
AF points
The EOS 5D camera has three autofocus modes
plus manual focus (MF). In One-Shot AF, when focus is achieved, the AF operation stops and locks. Predictive AI SERVO AF tracks subject
movement and focuses continuously until the
start of exposure. AI Focus AF provides automatic switching from One-Shot AF to Predictive AI Servo AF when subject motion is detected. The manual focus mode provides a focus confirmation light, an illuminated superimposed AF point display (enabled/disabled with C.Fn-10) and a beeper (enabled/disabled with the power switch). AF-Assist is provided by EOS-dedicated Speedlites equipped with a near- infrared (peak wavelength approx. 700nm) AF-Supplemental beam.
In AI SERVO AF mode and with automatic AF point selection set, a total of fifteen AF points, including the six Supplemental AF points, will function automatically. As with
III. PERFORMANCE AND RELIABILITY | 8 |
