Si no puedes pagar Lumion y la versión de prueba de 14 días no te alcanza, considera estos motores de renderizado gratuitos (open source o freemium):

Puedes consultar el manual oficial en PDF para resolver dudas técnicas.

to test all features, including the full library of 10,000+ assets. No credit card is required to sign up, but your PC must meet the high system requirements (Windows 10+, powerful GPU, and ~105 GB disk space). Student License: Verified students in eligible countries can request a free 1-year Lumion Student license