diff --git a/src/Gui/Camera.cpp b/src/Gui/Camera.cpp
index 3949593b02..e075154a3b 100644
--- a/src/Gui/Camera.cpp
+++ b/src/Gui/Camera.cpp
@@ -127,6 +127,25 @@ SbRotation Camera::left()
 
 SbRotation Camera::isometric()
 {
+    //from math import sqrt, degrees, asin
+    //p1=App.Rotation(App.Vector(1,0,0),45)
+    //p2=App.Rotation(App.Vector(0,0,1),-45)
+    //p3=p2.multiply(p1)
+    //return SbRotation(0.353553f, -0.146447f, -0.353553f, 0.853553f);
+
+    //from math import sqrt, degrees, asin
+    //p1=App.Rotation(App.Vector(1,0,0),90)
+    //p2=App.Rotation(App.Vector(0,0,1),135)
+    //p3=App.Rotation(App.Vector(-1,1,0),degrees(asin(-sqrt(1.0/3.0))))
+    //p4=p3.multiply(p2).multiply(p1)
+    //return SbRotation(0.17592, 0.424708, 0.820473, 0.339851);
+
+    //from math import sqrt, degrees, asin
+    //p1=App.Rotation(App.Vector(1,0,0),90)
+    //p2=App.Rotation(App.Vector(0,0,1),45)
+    //#p3=App.Rotation(App.Vector(1,1,0),45)
+    //p3=App.Rotation(App.Vector(1,1,0),degrees(asin(-sqrt(1.0/3.0))))
+    //p4=p3.multiply(p2).multiply(p1)
     return {0.424708F, 0.17592F, 0.339851F, 0.820473F};
 }