Canon EOS M200 Advanced User Guide - Page 461

Custom Function Setting Items M Custom Functions are organized into two groups based on the function type: C.Fn I: Exposure, C.Fn II: Others. C.Fn I: Exposure C.Fn-1 ISO expansion 0: Off 1: On When you set the ISO speed, you can set "H" (equivalent to ISO 51200) for still photos and "H" (equivalent to ISO 25600) for movies. Note that if [z: Highlight tone priority] is set to [Enable] or [Enhanced], "H" cannot be selected. zzFor 4K movies, the ISO speed range is ISO 100-6400, even when [ISO expansion] is set to [1: On]. C.Fn-2 Safety shift 0: Disable 1: Enable You can shoot with the shutter speed and aperture value automatically adjusted to enable standard exposure if standard exposure would not be available under your specified shutter speed or aperture value in [s] or [f] mode. 461