diff --git a/visionSamples/FaceTracker/app/src/main/java/com/google/android/gms/samples/vision/face/facetracker/FaceTrackerActivity.java b/visionSamples/FaceTracker/app/src/main/java/com/google/android/gms/samples/vision/face/facetracker/FaceTrackerActivity.java
index 664d73de..19fa408e 100644
--- a/visionSamples/FaceTracker/app/src/main/java/com/google/android/gms/samples/vision/face/facetracker/FaceTrackerActivity.java
+++ b/visionSamples/FaceTracker/app/src/main/java/com/google/android/gms/samples/vision/face/facetracker/FaceTrackerActivity.java
@@ -142,8 +142,13 @@ private void createCameraSource() {
             Log.w(TAG, "Face detector dependencies are not yet available.");
         }
 
+	DisplayMetrics displayMetrics = new DisplayMetrics();
+        getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
+	int width = displayMetrics.widthPixels;
+	int height = displayMetrics.heightPixels;
+        Log.d(TAG,"Metrics Preview width and height="+width+" "+height);
         mCameraSource = new CameraSource.Builder(context, detector)
-                .setRequestedPreviewSize(640, 480)
+                .setRequestedPreviewSize(width, height)
                 .setFacing(CameraSource.CAMERA_FACING_BACK)
                 .setRequestedFps(30.0f)
                 .build();