I paid just $149 for Vue 5, which is the upgrade price. For me the HUGE DIFFERENCE in features over Vue 4, and the far greater POWER of software OPTIMIZED for PROFESSIONAL type rendering of Poser scenes is WELL WORTH the price! ********************************************************** Lighting and Atmosphere Ultra-Realistic Volumetric Atmosphere Model 100 predefined atmospheres 70 predefined shapes of clouds, unlimited layers of clouds Volumetric clouds; volumetric lights (visible rays, with optional dust). Point light, Quadratic point light, Spotlight, Quadratic spotlight, Directional light Complete lens flare system with global/local settings. Light gels with realistic projection modes. Stars, rainbows and ice rings. Caustics in the shadows of transparent materials. Caustics realistically depend on the Index of Refraction. Adjustable light shadow density, negative lights. Soft shadows, blurred reflections and transparencies, depth of field. New! Shadow and volumetric light optimization for dramatic increase in rendering speed. New! Image based lighting New! HDRI New! Global Illumination New! EasyGI global illumination adjustment. New! Global Radiosity New! Adjustment of global light intensity