Canon EOS M50 Mark II Advanced User's Manual page 346

Note
Combination IS
Even more effective correction is possible by recording movies with Movie digital IS
and a Combination IS-compatible lens, which will combine optical and digital image
stabilization by the lens and camera.
For details on lenses compatible with Combination IS, visit the Canon website.
"+" is added to the Movie digital IS icon (
Combination IS is used.
) when a lens compatible with
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