The ULP algorithm in Dialux 3.14 is legendary. When you ask the software to automatically place luminaires in a rectangular room to achieve a specific illuminance (e.g., 500 lux at desk height), version 3.14 almost always produces a cleaner, more symmetric grid than later versions. It does not "overthink" the geometry.

Use evo for client-facing renders and complex organic architecture. Use Dialux 3.14 for number-crunching, large industrial halls, street lighting, and emergencies where the client just needs a valid DIAL file by lunch.

Always check your Maintenance Factor . In the "Project" overview, there is a global setting. For a dirty factory, set it to 0.7. For a clean office, 0.8. This ensures your design will still meet the lux standard years from now when the luminaires are dirty.

While "3.14" is not a current primary version—as the software has evolved through (the classic version) and into the modern DIALux evo —the platform continues to provide comprehensive tools for precise illumination engineering. Core Capabilities