MEDIUMS

Mediums are used to create complex translucent materials. The light will change depending on the characteristics of the surface after entering a "medium". When photons enter the surface they are either scattered or absorbed (actually both). Then they come out of the surface. This process is a very complex process and the Octane Medium is about this phenomenon. Complex materials such as vax, skin, milk and leaf can be produced by this medium. There are 3 different Mediums in Octane: absorption, scattering and volume.

If you want to get realistic and accurate result, you can use Diffuse and Specular materials when using Medium. We also recommend Path Tracing or PMC as Render Kernel. You have to increase the sample count a lot depending on the scene you have. But render times can be a bit long. Unfortunately, the price we will pay for a realistic result is the time unit. We will explain how to optimize your kernel settings at the end of this topic.

介质

介质用于创建复杂的半透明材质。进入“介质”后，光线将根据表面的特性而变化。当光子进入表面时，它们要么被散射，要么被吸收（实际上是两个）。然后它们从表面出来。这个过程是一个非常复杂的过程，而Octane介质就是这种现象。这种介质可以产生复杂的材质，例如瓦克斯，皮肤，牛奶和树叶。Octane中有3种不同的介质：吸收，散射和体积。

如果要获得逼真的结果，可以在使用“中”时使用“漫反射”和“镜面反射”材质。我们还建议将路径跟踪或PMC用作渲染内核。您必须根据所处的场景大量增加采样数量。但是渲染时间可能会有点长。不幸的是，我们要付出的实际代价是时间单位。在本主题的结尾，我们将说明如何优化内核设置。

Also, make sure your object is closed or thick when using Mediums. In single sided objects, mediums will not work. We also recommend that you keep the Material Reflection low, if the reflection is high enough rays do not enter the object and reflected back. These requirements will be enough that the medium works effectively for the most scenarios.

Finally, the Absorption and Scatter phenomena usually coexist. We have distinguished these 2 things in order to be regular in explaining, but in fact these two should work together for the correct results. Keep this in mind.

另外，使用“介质”时，请确保对象是闭合的或较厚的。在单面物体中，介质将不起作用。我们还建议您将“材质反射”保持为低，如果反射足够高，则光线不会进入对象并反射回来。这些要求足以使介质在大多数情况下均能有效工作。

最后，吸收和散射现象通常并存。为了便于解释，我们区分了这两件事，但实际上，这两件事应该一起工作才能获得正确的结果。请记住这一点。

ACCESS MEDIUM CHANNEL

Medium channel is available only in Specular and Diffuse Materials. You can use it from one of these.

访问介质频道

中通道仅在镜面和漫反射材质中可用。 您可以从其中之一使用它。