161The following program line applies when the camera is in Program AE<d> mode.Program Line DescriptionThe lower horizontal axis represents the shutter speed, and the right-hand vertical axis represents the aperture value. The combinations ofshutter speed and aperture value automatically determined by ProgramAE are shown as lines with respect to the subject brightness (ExposureValue) gradations on the left and top edges of the graph.Example:Using an EF50mm f/1.4 USM lens with a subject brightness ofEV12, the point where the diagonal line from EV12 (on the topedge) intersects the Program AE line represents thecorresponding shutter speed (1/320 second) and aperturevalue (f/3.5) that the program sets automatically.The diagonal arrowed lines at the upper left indicate themetering range for each ISO speeds.Program LineISO 1002004008001600-1-2-3-4 1.4-530 15 8 4 2 1 2 4 8 15 30 60 125 250 500Shutter speed1000 2000 4000 80001.022.845.681116223211 12 13 14 15 166 7 8 9 10 17 18 19 21 2320 2243210EV5Aperture value (f/no.)
