Weird Lighting on my edge of camera scene

Development Rendering
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1

Hi there, I am a newbie :warning: on Unreal Engine 5 and I am trying to work on an interior project. I have encounter a weird light issue that occur on my edge of the scene camera ONLY which have light on some of the geometries.

Image is shown as below:

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As the screenshots above, the issue only happen on the sofa and it didn’t occur on the carpet and the floor. Another point is the issue only occur on the side surface of the geometries, it will not affect on top surface of the geometry (refer to the second screenshot)

The solutions I have tried to fix this issue

  1. Change the Material of the Sofa to those material that didn’t encounter this issue from the other object

  2. Edit the Mesh setting which is tick two sided as well as adjust on the lightmap UV

  3. Remove the normal map from the original material and The light issue is lighter but still exists

Result:

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I am using Lumen in my scene for both GI and Reflection method.

2

Hardware ray tracing, or software one?

3

Hi @Miguel1900 I think I’m using hardware ray tracing below are the project setting for this project.

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Since two week of testing, I have test out that normal map will bring huge impact on the light on the edge of camera however when I reduced the value of the normal map to 0 ; the brightness of the light did decrease but the issue still remain there.

4

Oh, I agree! It seems to be a normals issue. As it’s related to just one geometry, it may be the geometry too, but normals, almost for sure. You should check them. Try using a plain normal map as the normals texture, but check the directions of the normals in your modeling software too.

5

Yeah, I have confirmed the normal map which cause the light but after I adjust or remove the normal map , the issue was still there just the intensity of the light issue have reduce and this is not just impact to one geometry it impact multiple of geometries in the scene but I have checked the geometries as well; there is no any problem for the geometries. I can’t figure out how this happen and I tried as many solution as possible. But it was related to the light which I did decrease the intensity of the directional light to value 1, the problem doesn’t occur.

6

See if anything weird is going on with the debug views under lit, particularly the World Normal view.