I know this topic is only remotely related to Trains but a number of you are photographers and cell phone users and this came up in another thread about the reliability of Chinese made consumer products so I thought I would post this general overview from someone that lives in China, speaks the language fluently and uses Chinese equipment.
https://www.youtube.com/watch?v=6Y-UOVi8KaU
So that gimbel or whatever he demos at the end of the video. I think would be really cool for trackside videos where you don’t have a tripod setup. Really improves the video quality or say maybe for parallel shots out the window of car which many seem to attempt but with really poor video results.