Animation -> Actor Coordinate-System (Camera) changes during movement


i've created a helix as a camera path, inside is the path for the corresponding target. they height of the helix matches the length of the target path - so both actors are always at the same elevation:

during the animation the camera-coordinate-system changes, which leads to rotation of the camera:

i tried to match the camera coordinate-system to the target cs (manipulate actor) - with no effect
then tried to reduce the available axis of rotation (modify actor) by allowing only one axis for rotation of the camera - with no effect

ist there a way to keep the green axis of the camera vertical at all times ? - i'm clueless


kind regards

dirk reinert