Keeping field of view the same in a 2d game

I am making a 2d game and i would like to keep the field of view the same for all aspect ratios. So far I've tried this: float windowAspect = (float)Screen.width / (float)Screen.height; float scaleHeight = windowAspect / targetAspect; Camera camera = GetComponent();

     if (scaleHeight < 1.0f)
     {  
         camera.orthographicSize = camera.orthographicSize / scaleHeight;
     }

but it doesn't work. Any help is appreciated