Program Line - Canon EOS-3 Instructions Manual

3. Program Line

The program line below applies when the camera is used in the Program
AE (P) mode with an EF 50mm f/1.4 USM lens.
Program Line Description
The bottom horizontal axis represents the shutter speed and the right
vertical axis represents the aperture. On the left edge and top edge of the
graph, the Exposure Value (EV) is indicated on a 45-degree scale. The
program line indicates the shutter speed and aperture which the Program
AE mode sets automatically for the respective EV.
Example: When the subject brightness is EV 12, the point where the
diagonal line from EV 12 (on the top edge of the graph) intersects the
program line indicates the corresponding shutter speed (1/320 sec.) and
aperture (f/3.5) which the program sets automatically.
The arrowhead lines above the graph indicate the metering range for the
respective film speed.
Intelligent Program AE Line
With EF 50mm f/1.4 USM
6 7 8 9 10 11 12 13
5
4
3
2
1
0
-1
-2
-3
-4
-5
30 15 8 4 2 1 2 4
14 15 16 17 18 19 20 21
8 15 30 60 125 250 500 1000 2000 4000 8000
SHUTTER SPEED
320
22 23
32
22
16
11
8
5.6
4
3.5
2.8
2
1.4
1.0
131