Canon EOS R50 Mirrorless Camera (White) - Manual (Page 726)

C.Fn1
ISO expansion
Makes “H” (equivalent to ISO 51200 in still photo shooting and ISO 25600 in movie
recording) available as an ISO speed in manual selection. Note that “H” is not available with
[
: Highlight tone priority ] set to [ Enable ] or [ Enhanced ].
OFF: Disable
ON: Enable
Safety shift
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 <
Tv > or < Av > mode.
OFF: Disable
ON: Enable
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