Bokeh is a new concept and follows in the wake of circle of confusion, coma, lateral fringing, colour shift etc. Many years ago, I knew a woman who was very religious. One drawback to this was her constant whinging that "the devil" was mounting an attack on her. It got so bad that she was committed to a mental hospital. So with bokeh. People worry about the out of focus highlights that will be in their shots. However, this lens has such incredible depth of focus that, set correctly, stuff in the background will be in focus, hence no bokeh.