How do different render engines (e.g., V-Ray, Arnold) handle lighting?

Different render engines handle lighting through distinct core algorithms, with key differences in bias and simulation methods. V-Ray, a biased engine, uses techniques like irradiance mapping and light cache to balance efficiency and quality, ideal for fast previews. Arnold, an unbiased engine, employs Monte Carlo sampling for accurate light interactions, prioritizing photorealism over speed. Practical applications include: - Architecture Visualization: V-Ray’s efficiency enables quick client previews. - Film/Animation: Arnold’s accuracy supports realistic character/scene lighting. In summary, choose V-Ray for speed and iteration; opt for Arnold when precise, lifelike lighting is critical.