Nothing special,
Production
HDRI on the Skylight; Skylight set to Static
Static lighting scale of 0.1
15 light bounces (4.18 preview has 15 on the sky lighting)
Lighting Quality of 4
BaseLightmass.ini was modified : NumShadowRaysScale=**16 , **NumPenumbraShadowRaysScale=**64 , **NumHemisphereSamplesScale=32
These settings don’t really have much impact on the style of the final look, as the renderings merely illustrate how nice “true” multi-bounce HDRI Skylighting looks like (Thanks to and ) and why it is so exciting to finally have this in UE4 for Arch-Viz.
In order to get a more stylized look (more like 's mod). as stated in #249 you can disable “Filtering on the Skylight” using **“bUseFilteredCubemapForSkylight=false” **in the Baselightmass.ini, Although the Default set to true is more physically accurate.
If you are looking to get a better understanding of Lightmass, Check out rafareis123 in-depth tutorial : https://ue4arch.com/ue4archs-unreal-…rkflow-part-1/