
This is the Corona scheme that I use most often. It is easy to set up and renders quickly. It will save you in 90% of commercial projects.
Where to get HDRI:
The best commercial ones, in my opinion: https://hdri-skies.com
https://www.hdri-hub.com/hdrishop/freesamples/freehdri
When you work with override (rayswitch), it is important to understand that we can replace certain material properties: reflections, refraction, GI. When setting up lighting, GI is important because it controls how light bounces, which affects the noise and color.
In this lesson, we are replacing reflections to get better highlights.
The principles of setting up lighting are the same for Corona and Vray. The most important thing is to understand how light works (regarding to theory). Remember that the background should be much brighter than the light inside and any artificial lights. In the blue hour, the total brightness of the internal light sources and the light from the window should be about the same.
Also, consider the color of the background and the complementary nature of the color of the light sources.
Script installation:
Drag and drop the script file into the 3ds Max window.
Go to Customize > User Interface > Toolbars
In the list, find the Render.courses section.
Drag the script icon into any toolbar.
The reasons for the noise in both rendering systems are the same. The only difference is the correction of GI caustics in Corona using the rayswitch, and our script is used to speed up the process.
Since Corona has few settings, I decided to make this video applicable to both Corona and V-Ray. If you use V-Ray, I also suggest watching it. In the next lesson, we will focus on V-Ray settings.
To reduce potential caustic noise in Vray, you need disable GI caustics.
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