Exposure Control; Drive - Canon EOS 5D Service Manual

2. When C.Fn-17-1 (AF point activation area) is used to select the center AF point, the
Assist AF points function as part of the expanded AF point area. In this case, the seven
AF points within the spot metering circle work in the AI SERVO AF mode and are
selected automatically.
The ■ AF point in Figure 006 is vertical line-sensitive at f/2.8, and the
horizontal line-sensitive at f/5.6. Including the center AF point, three AF points will focus
at f/2.8. This improves the focusing precision.
Since the camera has no built-in flash, AF-assist beam will be provided by the Speedlite.
＊ Official designation of AF points: The official number of AF points is 9. It does not include the invisible Assist AF
points.

⑶Exposure control

The metering sensor is the same 35-zone
metering sensor found in the EOS 20D (Fig.
007). There are four metering modes: Evaluative
metering, partial (approx. 8% of viewfinder
area), spot (approx. 3.5% of viewfinder area),
and centerweighted average metering.
The shooting modes (Fig. 008) are P, Tv, Av, M,
bulb, Full Auto, and C (Register camera settings.
For details, see Customization on p-11.). Basic
Zone modes and depth-of-field AE are not
provided.
For flash photography, E-TTL II autoflash and
averaged flash exposure (C.Fn-14-1) are provided.
Fig. 008 Mode Dial
The shutter unit (Fig. 009) is newly developed for the 35mm full-size sensor. The top
speed is 1/8000 sec. with X-sync at 1/200 sec.

⑷Drive

Top speed of 3 fps (One-Shot AF/AI SERVO AF). Maximum burst is 60 shots in JPEG
Large/Fine and 17 shots in RAW.
Fig. 007 Metering zones
Fig. 009 Shutter unit
9
General Information
□ AF point is