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Near distance between the point being illuminated and the light at which the sample doesn't get brighter. This may help you avoid hot spots and sampling issues where a light is near a surface. These values are based on your scene scale/distance so this is just an example.

Specular Near Dist (available in 24.5)

Near distance between the point with specular shading being illuminated and the light at which the sample doesn't get brighter. This may help you avoid hot spots and sampling issues where a light is near a specular surface. Note that this value will not apply to lights as seen from the camera. Below, the right sphere has a distance of 0.0, 5.0, and finally 10.0. These values are based on your scene scale/distance so this is just an example.

Diffuse Near Dist (available in 24.5)

Near distance between the point with diffuse shading being illuminated and the light at which the sample doesn't get brighter. This may help you avoid hot spots and sampling issues where a light is near a diffuse surface. Note that this value will not apply to lights as seen from the camera. Below, the left sphere has a distance of 0.0, 5.0, and finally 10.0. These values are based on your scene scale/distance so this is just an example.

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