LUX / luminance in virtual Projection Mapping Setup?

I am trying to use Light Act to do a previsualisation of a projection mapping setup for a show next week. I place the projectors in 3D space and orient them to cover the desired area on the building. The LUX values indicated in LightAct seem far too low to me, and I suspect I’m missing something. Any ideas?

Projector setup:
2 x 20 000 lumen projectors, 1920x1200 resolution
projector 1 throw distance: 100m
projector 2 throw distance: 70m
building dimensions: 50m x 35m


Can you please send me your project including the necessary assets?

Just PM them to me if possible.


Best regards,