From the course: Blender 2.83 Essential Training

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Cryptomattes

Cryptomattes

- [Instructor] Have you ever rendered something and afterwards went, "Ah, man! "I really wish I could change the color of this thing "or make the background darker or lighter." How would you do that after you've rendered something? Well, with a little bit of preparation, you can do that inside of Cycles. Let me show you. Of course, let's switch our render engine to Cycles and then let's make ourselves a quick scene. You know the drill, Shift + A, add a plane. Move our cube back here. Let's add ourselves some more interesting items. There we go and let's go ahead and add a few more things upfront. So Shift + A, Sphere and let's Shift + A again. Let's add a cone. There we go. Now, grab your camera and rotate it up a little bit. R + X + X. And then we can view the camera really quick. Hey, that's looking pretty good, I'm going to scale up my plane a little bit. I'm going to grab the sphere and I want it to overlap…

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