This is a relighting of Aiko Shinohara's Library scene in UE4 4.21 using static lighting and physical units.
https://gumroad.com/l/AikoShinohara
Detail Lighting
Final, graded image
Final, without grading
Resolve grade
For the practicals, I converted the lumens to luminance based on the object's surface area. For the sun/skylight, I converted the measured luminance of their contribution to illuminance and adjusted accordingly.