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We’ve added simulation of the absorption of light by ozone in the atmosphere, making the already realistic atmosphere model practically indistinguishable from reality. Along with new simple-to-use presets that realize a variety of common cloud types such as altocumulus, the new cloud shading technology allows you to produce highly realistic skies with ease. Terragen 4 can simulate light scattering hundreds of times within clouds to produce their characteristic softness, as well as inter-cloud and cloud-surface interactions.
![terragen classic animation terragen classic animation](https://www.naturescapes.net/images/articles/201001/john-labrenz-terragen-classic-basics-MAC-tn.jpg)
Years of internal research and development have led to a major breakthrough for rendering clouds with photo-realistic shading. It provides almost instant feedback as you work on your objects, shaders, atmosphere and lighting, allowing you to fine-tune your scenes much more quickly and easily. The new Ray-Traced Preview (RTP) will revolutionize the way you use Terragen.
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We’ve raised the bar of photorealism, while giving you new tools to create and explore your scenes more quickly and intuitively than ever before. Terragen 4 is faster, more interactive and easier to use.