 However, even these simple procedures require motion tracking between the fields, and a rotating or tilting object, or one that moves in the Z axis (away from or towards the camera) will still produce combing, possibly even looking worse than if the fields were joined in a simpler method.Some deinterlacing processes can analyze each frame individually and decide the best method.The best and only perfect conversion in these cases is to treat each frame as a separate image, but that may not always be possible.