https://apps.autodesk.com/RVT/en/Deta...
Exports Spaces from Autodesk® Revit® to the (.STF) file format used by DIALux software for photometry calculations.
Features:
Export All Spaces geometry to DIALux with ease
Export Spaces By Level
Export Reflection Factor Parameters from Model or Use DIALux default values
Export Spaces with Model Room Name and Number
All exported values are expressed in SI units, can be changed inside DIALux
Very useful for Electrical Engineers and Lighting Designers.