I set up a small scene in 3Ds max to test object picking in babylon.js. I exported the scene to .obj and then convert it to .babylon using http://www.babylonjs.com/converter.html. But I got some unexpected results, here is the link http://developerslink.net16.net/scene2.html . Its not picking the objects perfectly. You can check it yourself. Here is the one more test but got the same results http://developerslink.net16.net/loadScene.html