Canon 510 HS - Manual (Page 128)

Other Settings
128
Powered IS reduces slow camera shake that may occur when recording
telephoto movies. However, this option may not produce the expected results
when used for the stronger camera shake that may occur when shooting
while walking or when moving the camera to match subject movement. In this
case, set Powered IS to [Off].
z Follow the steps in “Changing the IS Mode
Settings” (p. 127) to access the [IS Settings]
screen.
z Choose [Powered IS], and then choose [Off]
(p. 50).
Deactivating Powered IS
Movies
• [Powered IS] settings are not applied when [IS Mode] is set to [Off].