diff --git a/java/examples/3D/Camera/OrthoVSPerspective/OrthoVSPerspective.pde b/java/examples/3D/Camera/OrthoVSPerspective/OrthoVSPerspective.pde
index f91fec7b7..9c9a0ff1d 100644
--- a/java/examples/3D/Camera/OrthoVSPerspective/OrthoVSPerspective.pde
+++ b/java/examples/3D/Camera/OrthoVSPerspective/OrthoVSPerspective.pde
@@ -27,11 +27,11 @@ void draw()
  
   if(mousePressed) {
     float fov = PI/3.0; 
-    float cameraZ = (height/2.0) / tan(PI * fov / 360.0); 
+    float cameraZ = (height/2.0) / tan(fov/2.0); 
     perspective(fov, float(width)/float(height), 
                 cameraZ/2.0, cameraZ*2.0); 
   } else {
-    ortho(-width/2, width/2, -height/2, height/2, -10, 10); 
+    ortho(0, width, 0, height); 
   }
   
   translate(width/2, height/2, 0);