[Kunzite]

That's... just the scene? I'm not sure what the lens could do, except for blurring it further (which the DoF won't allow). Or making it sharp (closing down). Similar story with highlights through foliage; even partially blurred, these still will look harsh.
I've seen occasionally harsh bokeh even from portrait lenses. There's another sample - from Map Camera - whose upper left corner is making me dizzy, if I'd look at high magnification.