最后的这个例子展示了 阴影过滤锐化 属性，用于提高阴影边缘的锐度。其只适用于 移动 或 静止 光源，只能用于动态物体投射的阴影。需要靠近阴影才能看到完整效果。虽然使用频率不高，但这种方法能有效地展示更近或更小的光源在物体上投下锐利的阴影。
下图中能近距离地查看范例。注意右边阴影的锐度远高于左边的阴影。
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