How do I get my YI 4K+ Action Camera focused?

YI Action Camera 4K is with 155-degree FOV, and YI Action Camera 4K is with very deep Depth-of-Field which can virtually cover from selfie photography distance to infinity photography. So, like other action cameras, the focus distance of YI Action Camera 4K is fixed, and not adjustable. We think this fixed focus distance lens is the best choice for Action Camera, balancing image quality, toughness, and small size.
To get maximum resolution at very near field photography, such as less than 10cm, we recommend using a macro lens from a third-party.