Canon EOS 10D EOS 10D INSTRUCTIONS - Page 165

AE Lock Effects, Program Line

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AE Lock Effects (when using a mode in the Creative zone) AF point selection Metering method Auto selection Manual selection Evaluative metering AE lock applied to the metered value at the active AF point. AE lock applied to the metered value at the selected AF point. Partial metering Center-weighted average AE lock applied to the metered value at the center AF point. Program Line < > The following program line applies when the camera is in Program AE < > mode. EF50mm f/1.4 USM EF24-85mm f/3.5-4.5 USM : WIDE24mm EF24-85mm f/3.5-4.5 USM : TELE85mm ISO H:32010600800400200100 Aperture value (f/no.) 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 32 4 22 3 16 2 11 1 8 0 5.6 -1 4 -2 2.8 -3 2 -4 1.4 -5 EV 1.0 30 15 8 4 2 1 2 4 8 15 30 60 125 250 500 1000 2000 4000 Shutter speed Program Line Description The lower horizontal axis represents the shutter speed, and the right-hand vertical axis represents the aperture value. The combinations of shutter speed and aperture value automatically determined by Program AE are shown as colored lines with respect to the subject brightness (Exposure Value) gradations on the left and top edges of the graph. Example: Using an EF50 f/1.4 USM lens with a subject brightness of EV11.5, the point where 13 the diagonal line from EV11.5 (on the top edge) intersects the Program AE line Reference represents the corresponding shutter speed (1/250 second) and aperture value (f/ 3.5) that the program sets automatically. The diagonal arrowed lines at the upper left indicate the metering range for each ISO speeds. 165

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165
Reference
13
AE Lock Effects
Program Line
AF point selection
Metering method
Evaluative metering
Partial metering
Center-weighted average
Auto selection
AE lock applied to the
metered value at the active
AF point.
Manual selection
AE lock applied to the
metered value at the
selected AF point.
AE lock applied to the metered value at the center AF
point.
(when using a mode in the Creative zone)
<
> The following program line applies when the camera is in Program AE <
> mode.
Program Line Description
The lower horizontal axis represents the shutter speed, and the right-hand vertical axis
represents the aperture value. The combinations of shutter speed and aperture
value
automatically determined by Program AE are shown as colored lines with respect to the
subject brightness (Exposure Value) gradations on the left and top edges of the graph.
Example:
Using an EF50 f/1.4 USM lens with a subject brightness of EV11.5, the point where
the diagonal line from EV11.5 (on the top edge) intersects the Program AE line
represents the corresponding shutter speed (1/250 second) and aperture value (f/
3.5) that the program sets automatically.
The diagonal arrowed lines at the upper left indicate the metering range for each
ISO speeds.
–1
–2
–3
–4
1.4
–5
30
15
8
4
2
1
2
4
8
15
30
60
125
250
500 1000 2000 4000
1.0
2
2.8
4
5.6
8
11
16
22
32
6
7
8
9
10
11
12
13
14
15
16
17
18
19
ISO 100
200
400
800
1600
H:3200
EF24–85mm f/3.5–4.5 USM : WIDE24mm
EF24–85mm f/3.5–4.5 USM : TELE85mm
21
20
22
4
3
2
1
0
EV
5
EF50mm f/1.4 USM
Shutter speed
Aperture value (f/no.)