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One way to increase the drama as well as the sense of depth in a ZBrush illustration is to enable Fog. The Fog controls are found in the Render palette here. So I'm going to expand my tray. Click-and-drag to place this into the tray, and then to enable Fog I'm just going to turn on the Fog, and immediately we can see it, even when we are in Preview mode. Fog Controls are very simple, we have overall intensity, even a little bit of Fog can add a lot to a scene.
We can also control the depth were the Fog starts and ends. We can do so using these numeric sliders, but it's even better to do it interactively. So this is front area of the Fog, in other words the position were things are clear as opposed to were things are foggy. I can use this slider, but I can also pick the area interactively in the scene. So if I want to set it right there. And the same goes for the background, in other words. When the fog reaches its maximum opacity, I can click-and-drag, let's say, this robot is the background of the fog.
Color is fairly self-explanatory, I can choose a color by dragging right here, and that will color the fog, so I can create something very alien by combining red and blue, maybe bring down the intensity here a little bit. I also have an Edit Curve, and you can create some very interesting effects by changing the Edit Curve. So perhaps these robots are walking into an area of radiation or something like that. I can even add some Noise and get something a really wild-going. I have got a Negative Noise, there we go, okay, we have other noise there, I'm going to reset this, and let's change this back to white.
I can also add the texture to the areas of the fog, and this is something that's easier to see when I mean in Best Render quality. But again, this is definitely an area for creative exploration, how those textures can be used, certainly that's up to as the artist, if you create a normal looking fog you might want to turn the textures off. So switch back to Preview here.
So that's the basics of working with Fog in ZBrush. It's a lot of fun. Even just a little bit of fog lower the intensity down just this much already adds a lot to the sense of depth in the scene.
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