In file: [/src/away3d/cameras/lenses/OrthographicLens.as](https://github.com/away3d/away3d-core-fp11/blob/master/src/away3d/cameras/lenses/OrthographicLens.as) In function _unproject_ Line: 57 v.y = nX + translation.y; Should be: v.y = -nY + translation.y;