Canon PowerShot V10 Advanced User's Manual page 59

Manual Exposure Movie
Select [ ].
Enables you to set the shutter speed, aperture value, and ISO speed.
With ISO speed set to [
1.
Select [
2.
Select an item.
], you can set exposure compensation.
].
Set by pressing the <
Check the exposure level mark (2) to see how far the current exposure
level is from the standard exposure level (1).
> < > keys.
59