fix-auto-focus.js

// Run with node fix-auto-focus.js 
//
// This disables the broken auto-focus on Logitech cameras. 
// It works for me on my Logictech 920.
var UVCControl = require('uvc-control');

var camera = new UVCControl(0x046d, 0x082d);

camera.get('autoFocus', function (error, value) {
  console.log('Before AutoFocus setting:', value);
});

camera.set('autoFocus', 0, function (error) {
  if (error != undefined) {
    console.log('AutoFocus set error:', error);
  }
});

camera.get('autoFocus', function (error, value) {
  console.log('After  AutoFocus setting:', value);
});