The Image Capture API provides a means to set the focusMode to manual which is not useful if you cannot set the focus distance. This change provides an interface for getting focus range values and setting focus distance value.
Docs: https://github.com/w3c/mediacapture-image/pull/175
Samples: Android : https://codepen.io/rijuB/pen/NzWpxG Linux/CrOS: https://codepen.io/rijuB/pen/BPyWzp