diff --git a/src/controller.html b/src/controller.html
index 4778d34..dd44323 100644
--- a/src/controller.html
+++ b/src/controller.html
@@ -15,7 +15,7 @@
     </tr>
     <tr>
         <td>
-            <input class='resolution' type='range' min='4' max='80' value='6' />
+            <input class='resolution' type='range' min='1' max='10' value='10'  />
         </td>
     </tr>
 </table>
\ No newline at end of file
diff --git a/src/index.js b/src/index.js
index e67267a..7f6ef55 100644
--- a/src/index.js
+++ b/src/index.js
@@ -133,9 +133,16 @@ loadData('./data/data_coarse_scaled.vtk').then((polydata) => {
     
     const light = vtkLight.newInstance();
     light.setPosition(1, 1, 1);
+    light.setFocalPoint(0, 0, 0);
     light.setIntensity(0.4);
     renderer.addLight(light);
 
+    const light2 = vtkLight.newInstance();
+    light2.setPosition(-1, -1, -1);
+    light2.setFocalPoint(0, 0, 0);
+    light2.setIntensity(0.6);
+    renderer.addLight(light2);
+
     renderWindow.render();
 
 }).catch((error) => {
@@ -158,8 +165,8 @@ representationSelector.addEventListener('change', (e) => {
 });
 
 resolutionChange.addEventListener('input', (e) => {
-    const resolution = Number(e.target.value);
-    currentSource.setResolution(resolution);
+    const opacity = Number(e.target.value);
+    actor.getProperty().setOpacity(opacity/10);
     renderWindow.render();
 });