Here is a training video for how to use the Vertigo Effect Wheel on your Zhiyun Smooth 4 smartphone gimbal.
The effects wheel is used for smooth zooming and precise focusing. You rotate the Smooth 4 gimbals’ unique follow focus hand wheel, you can smoothly zoom in/out the footage and create more diverse images. When you press the follow focus button, the hand wheel will turn into a follow focus controller, where you can control the focus manually, creating more possibility for your shooting.
Thanks tuber Scott Dumas for the video and the screen grab in this post.
The Zhiyun Smooth 4 gimbal can be found here on sale now with free shipping from Amazon.