I'm making a "2D" game using 3D planes and an orthographic camera. My base is a 640x960 screen and I want to have a 1:1 pixel in this screen size to place all my elements. I'm using an orthographic size of 960/2 = 480, but the width is not 640 but seems to be 720??? 1/ What can I do to get the right width? 2/ What can I do to make the game view being the same whatever screen size is used? ( elements should be automatically scaled ).