Canon C12-8453, Service Manual

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AF speed and predictive AF performance
The AF speed and precision in the One-Shot AF mode are the same as the EOS-3’s. As for
predictive AF, the camera coupled with an EF 300mm f/2.8L IS USM lens can track a
moving subject approaching at a speed of 50 kph up to as close as 8 meters. (As with the
EOS-1V and EOS-3.)
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AF-assist
In low-light conditions, the built-in flash automatically fires an intermittent flash (like
the EOS REBEL 2000 / EOS 300) aimed at the area covered by the active focusing
point (from among any of the seven). The effective range at the center is 4.5 meters.
(3) Eye Control
Fast processing by a 32-bit microcomputer, eye detection by four IREDs, and an
improved Eye Control detection algorithm make the EOS ELAN 7 E / EOS 30’s Eye
Control performance faster and more precise than the EOS-3’s (see Fig. 1-6). Also, the
calibration procedure is required four times (left, right, top, bottom) as with previous Eye
Control cameras. Up to five sets of calibrations (CAL-1 to 5) can be saved. The EOS
ELAN 7 E / EOS 30’s Eye Control detection sensor is the Area BASIS found in the
EOS-3. Table 1-1 compares the Eye Control specifications of all EOS cameras having
Eye Control.
Part 1: General Information
1-7
Fig. 1-5 Eye Control Sensor
EOS A2E/EOS5
EOS ELAN II E/
EOS 50E
EOS IX E
EOS-3
EOS ELAN 7E
EOS 30
fast slow
(ms) 50 100 200
220
120
65
55
150
Fig. 1-6 Eye Control Detection Response Times
EOS ELAN
7 E / EOS 30
7-point Area
5
4
55
Area BASIS
7000
EOS-3
45-point Area
3
4
65
Area BASIS
7000
EOS IX E
3-point hori.
3
2
120
Area BASIS
7000
EOS ELAN II
E / EOS 50 E
3-point hori.
3
2
120
Area BASIS
7000
EOS A2/A2E/5
5-point hori.
5
2
220
CCD
6000
Item
Focusing Points
Horizontal Eye Control
Vertical Eye Control
CAL
Eye Control Servo AF
Eye Control DEP
Eye Control DEP Preview
Response Time (approx. ms)
Sensor Type
Pixels
Table 1-1 Eye Control Specifications Comparison
Horizontal
Vertical
CAL No.
Procedures