Merge pull request #13237 from HoldenCa/fix/13180

FBXLoader: PerspectiveCamera enhancement.

examples/js/loaders/FBXLoader.js

@@ -1647,10 +1647,13 @@
 
 			}
 
+			var focalLength = cameraAttribute.FocalLength ? cameraAttribute.FocalLength.value : null;
+
 			switch ( type ) {
 
 				case 0: // Perspective
 					model = new THREE.PerspectiveCamera( fov, aspect, nearClippingPlane, farClippingPlane );
+					if ( focalLength !== null ) model.setFocalLength( focalLength );
 					break;
 
 				case 1: // Orthographic