Panolapse is a tool for adding rotational panning motion to time-lapse images and videos. There are a few ways to create movement in time-lapse sequences. Some people mount the camera on a motorized track that slides, or a motorized head that rotates, or both. These systems are often heavy, fragile, and restrictive. Another approach uses standard video-editing software to digitally crop into a scene and slide the viewing window around. This approach can be helpful, but since it doesn't correct for changes in perspective, the resulting video can appear flat and unnatural.