1603 Custom Function SettingsC.Fn I -7 Spot metering link to AF point0: Disable (use center AF point)1: Enable (use active AF point)Enables spot metering linked to the selected AF point. With automaticAF point selection, spot metering will be at the viewfinder center.C.Fn I -8 Safety shift0: Disable1: Enable (Tv/Av)This works in the shutter-priority AE (Tv) and aperture-priority AE (Av)modes. When the subject’s brightness changes erratically and thecorrect autoexposure cannot be obtained, the camera will change theexposure setting automatically to obtain a correct exposure.2: Enable (ISO speed)This works in the Program AE, shutter-priority AE, and aperture-priorityAE modes. When the subject’s brightness changes erratically and thecorrect autoexposure cannot be obtained, the camera will change theISO speed within 100 - 1600 automatically to obtain a correct exposure.C.Fn I -9 Select usable shooting modesDisable: All the shooting modes (a, s, f, d, Bulb) will be selectable.Enable: Only the shooting modes set with [Register] will be selectable.Register: To make a shooting mode unselectable, uncheck the checkmark<X>. After entering the settings, select [Apply].If 2 is set, the maximum burst during continuous shooting (p.54) willdecrease. However, depending on the ISO speed during shooting, theactual maximum burst might be higher than indicated in the viewfinder.Even if the settable ISO speed range has been changed with C.Fn I -3,12/13, the safety shift will override it when necessary to obtain thecorrect exposure.With settings 1 and 2, safety shift also works with flash.