Point cloud | Scale |Light

Hi. I’m curious if anyone can shine a light on this.

What is the native scale of a poincloud object when imported into UE4. Is it 1:1 ? Does this influence the the ways UE4 lights react on the poincloud object.

I ask this because i’m unable to get a spotlight shine on a section of a point cloud object i imported. This poincloud (exported LAS) is based on an aerial scan of 800m wide (approx. 2400ft) x 30m ( 90ft) deep. When adding a spotlight in need to zoom in (extremly) on the spotlight icon before i can see its iconic representation The light itself fails to give light even if i pumpup the intensity to its extreme.

thks