diff --git a/src/editor/editor/systems/CameraSystem.js b/src/editor/editor/systems/CameraSystem.js
index 3c695575..0e776f70 100644
--- a/src/editor/editor/systems/CameraSystem.js
+++ b/src/editor/editor/systems/CameraSystem.js
@@ -16,9 +16,9 @@ b3e.editor.CameraSystem = function(editor) {
     var k = tine.keys;
 
     if (kb.isDown(k.CTRL)) {
-      if (kb.isPressed(k.UP)) {
+      if (kb.isPressed(k.UP) || kb.isPressed(k.EQUAL)) {
         tree.view.zoomIn();
-      } else if (kb.isPressed(k.DOWN)) {
+      } else if (kb.isPressed(k.DOWN) || kb.isPressed(k.DASH)) {
         tree.view.zoomOut();
       }
     }
@@ -39,7 +39,9 @@ b3e.editor.CameraSystem = function(editor) {
   };
 
   this.onMouseDown = function(e) {
-    if (e.nativeEvent.which !== 2) return;
+    var middle = e.nativeEvent.which === 2;
+    var leftShift = e.nativeEvent.which === 1 && e.nativeEvent.shiftKey;
+    if (!middle && !leftShift) return;
 
     var project = editor.project.get();
     if (!project) return;
@@ -66,7 +68,9 @@ b3e.editor.CameraSystem = function(editor) {
     tree.y = editor._game.mouse.y - offsetY;
   };
   this.onMouseUp = function(e) {
-    if (e.nativeEvent.which !== 2) return;
+    var middle = e.nativeEvent.which === 2;
+    var leftShift = e.nativeEvent.which === 1 && e.nativeEvent.shiftKey;
+    if (!middle && !leftShift) return;
 
     var project = editor.project.get();
     if (!project) return;