Canon 1234B002 EOS 30D Instruction Manual - Page 179
Program Line
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Program Line The following program line applies when the camera is in Program AE mode. ISO 1002004080010600 EF50mm f/1.4 USM EF-S17-85mm f/4-5.6 lS USM : WIDE17mm EF-S17-85mm f/4-5.6 lS USM : TELE85mm Aperture 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 32 4 22 3 16 2 11 1 0 8 5.6 -1 4 -2 2.8 -3 -4 2 1.4 -5 EV 1.0 30 15 8 4 2 1 2 4 8 15 30 60 125 250 500 1000 2000 4000 8000 Shutter speed Program Line Description The lower horizontal axis represents the shutter speed, and the righthand vertical axis represents the aperture. The combinations of shutter speed and aperture automatically determined by Program AE are shown as lines with respect to the subject brightness (Exposure Value) gradations on the left and top edges of the graph. Example:Using an EF-S17-85mm f/4-5.6 IS USM lens with a subject brightness of EV8, the point where the diagonal line from EV8 (on the top edge) intersects the Program AE line represents the corresponding shutter speed (1/15 second) and aperture (f/4) that the program sets automatically. The diagonal arrowed lines at the upper left indicate the metering range for each ISO speeds. 179