Canon EOS 80D - Manual (Page 415)

415
3 Custom Function SettingsN
C.Fn I -6 Safety shift
0: Disable
1: Shutter speed/Aperture
Takes effect in the <s> shutter-priority AE and <f> aperture-
priority AE modes. If the subject brightness changes and the
standard exposure cannot be obtained within the autoexposure
range, the camera will automatically change the manually-selected
setting to obtain the standard exposure.
2: ISO speed
Works in the <d> Program AE, <s> shutter-priority AE, and
<f> aperture-priority AE modes. If the subject brightness
changes and the standard exposure cannot be obtained within the
autoexposure range, the camera will automatically change the
manually set ISO speed to obtain the standard exposure.
 Under [z2: ISO speed settings], even if [Range for stills] or [Min.
shutter spd.] is changed from the default setting, safety shift will
override it if the standard exposure cannot be obtained.
 The minimum and maximum ISO speeds of the safety shift using the ISO
speed will be determined by the [Auto range] setting (p.152). However, if
the manually set ISO speed exceeds the [Auto range], the safety shift
will take effect up or down to the manually set ISO speed.
 Safety shift will take effect if necessary even when flash is used.