Canon EOS R6 Mark II Mirrorless Camera with 24-105mm f/4-7.1 Lens - Manual (Page 309)

3.
Select [Still photo IS].
[ Always ]: Provides constant image stabilization.
[ Only for shot ]: Image stabilization is active only at the moment of
shooting.
Caution
In some cases, this may not provide sufficient stabilization for certain lenses.
Note
For details on image stabilization for movie recording, see Movie Digital IS .
Focal Length
Image stabilization based on your specified lens focal length is possible by setting the focal
length when using lenses that do not support lens communication.
1.
Select [Focal length].
309