Problem with animation easing
Hi, I'm working on a scene where there are a number of different animated elements: the camera, a few planes etc, but for some reason the easing between each key frame is weird...
For example, say I want a plane to take off, if I set the key frame of the plane on the ground at 0 and then move the y-coordinates at frame 60, instead of creating a smooth path, the plane follows a curve and dips into the ground. Then if I want it to continue straight, it slows down and speeds up again, making movement unrealistic. This also means the planes and camera are impossible to sync.
When I open a new file and try the same animation it's exactly how I want it and I don't get any weird behaviour between key frames. I'm wondering if I've accidentally changed a setting on the file I'm working on. This happens when animating any object but only in that file. I can't start again, unfortunately.
Can someone please help? I can't find information about this anywhere!