However, there is something to note here. On the surface, they simply change the minimum and maximum distance away from the light objects will be lit. Lower values will result in darker shadows, and higher values will result in lighter shadows. ShadowAtten is simply how dark the shadows created by the light will be. The key difference between higher shadowFilterSize and higher radius is shadowFilterSize will not cause light to “wrap around” objects, and it will also not cause the shadow to narrow as it goes farther.
Lower values result in sharper edges, while higher values result in softer edges. Unlike radius, shadowFilterSize will not distort the shape of the shadow, just the edges of the shadow. This is most useful for key lights, where softer shadows, unlike rim lights where bright and shiny edges are important. Since radius is basically changing the “size” of the point light, it will also cause light to wrap around objects, making it have a softer appearance. The biggest difference that this makes is shadows become less harsh, smoothing out and coming to a point as it goes on. A higher radius light would be more akin to a spotlight. Basically, it mimics a larger light source.įor example, a low radius light could be something like a flashlight. The radius setting changes the “size” of the point light. These two values can also be more easily manipulated by simply dragging the light from the Animation Set Editor to a viewport, and moving it just like you would a camera. Most of the time, these two values will remain equal and produce a circular light, but if you wish, you can make an oval light with these two values as well. horizontalFOV describes the horizontal diameter of the light, while verticalFOV describes the vertical diameter of the light.
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