Why does the EIS lean into corners?

Nigel

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Just wondering, if the EIS uses gyro sensors then the image should stay flat in the corners, but in this video it leans into the corners as though it is compensating for the direction of the g-forces. Doesn't do it so much on the rear view, presumably because it is angled downwards so gravity starts off at an angle. It does a good job of removing the bumps though:

 
The car is leaning outwards through the corner. The camera is fixed to the car, so it leans outwards too. This has the effect of tilting the horizon relative to the camera.

When you play the video the screen stays level, so the horizon appears to tilt upwards on the outside of the corner, giving the visual impression that the camera is leaning into the bend.
 
It's a little confusing because the camera is delaying the turn until after the car has started turning.
 
Yes, the EIS tries to smooth out motion both vertically and horizontally. Ideally for driving it would have a different EIS mode designed for horizontal movement. The image stabilisation on my Canon telephoto lenses has two modes - one to filter out vertical and horizontal vibration when you are trying to hold the camera still, the other mode is for panning with a moving subject so it only filters out vibration on one axis.
 
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