This API is available on Firefox OS for privileged or certified applications only.
Summary
The focalLength property value is a read-only property that returns a number that expresses the camera's focal length in millimeters.
Syntax
var focal = instanceOfCameraControl.focalLength
Value
Return a number representing the camera's focal length in millimeters.
Example
var options = {
camera: navigator.mozCameras.getListOfCameras()[0]
};
function onSuccess( camera ) {
var focal = camera.focalLength;
console.log("The camera's focal length is: " + focal + "mm");
};
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.