184Custom Functions are organized into four groups based on the functiontype: C.Fn I: Exposure, C.Fn II: Image, C.Fn III: Auto focus/Drive, C.FnIV: Operation/Others.3 Custom Function SettingsNC.Fn I: ExposureC.Fn-1 Exposure level increments0: 1/3-stop1: 1/2-stopSets 1/2-stop increments for the shutter speed, aperture, exposurecompensation, AEB, flash exposure compensation, etc. Effective when youprefer to control the exposure in less fine increments than 1/3-stop increments.C.Fn-2 ISO expansion0: Off1: OnEnables ISO 6400 and H (equivalent to ISO 12800) to be set. However,if [C.Fn-6: Highlight tone priority] is set to [1: Enable], ISO 6400 and“H” cannot be set.C.Fn-3 Flash sync. speed in Av (Aperture-priority AE) mode0: AutoThe flash sync speed is set automatically within a range of 1/200 sec. to30 sec. to suit the scene’s brightness.1: 1/200-1/60 sec. autoWhen flash is used with aperture-priority AE (f), this prevents a slowflash-sync speed from being set automatically in low-light conditions.It is effective for preventing subject blur and camera shake. However,while the subject will be properly exposed with the flash, the backgroundwill come out dark.2: 1/200 sec. (fixed)The flash-sync speed is fixed to 1/200 sec. This more effectivelyprevents subject blur and camera shake than with setting 1. However,the background will come out darker than with setting 1.The exposure level will be displayed in the viewfinder and on the LCDmonitor as shown below.COPY