This API is available on Firefox OS for privileged or certified applications only.
Summary
The focusDistanceOptimum property value is the distance in meters where the subject appears sharpest.
Syntax
var optimum = instanceOfCameraControl.focusDistanceOptimum
Value
Return a number representing a distance in meters.
Example
var options = {
camera: navigator.mozCameras.getListOfCameras()[0]
};
function onSuccess( camera ) {
var optimum = camera.focusDistanceOptimum;
console.log("The subject looks sharp at: " + optimum + "m");
};
navigator.mozCameras.getCamera(options, onSuccess)
Specification
Not part of any specification; however, this API should be removed when the WebRTC Capture and Stream API has been implemented.