From the course: After Effects Compositing: 2 Matching Foreground to Background

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Understand Gaussian vs. Defocus blurs

Understand Gaussian vs. Defocus blurs - After Effects Tutorial

From the course: After Effects Compositing: 2 Matching Foreground to Background

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Understand Gaussian vs. Defocus blurs

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Many digital artists consider Gaussian blur to be something like their go-to blur. In After Effects you're not going to find that it's the most useful blur. But not only that, you'll find it's completely useless when it comes to recreating the effect of a defocused lens. So in this lesson, I'm going to show you the difference between Gaussian blur and other blurs that are just like it. And the effect of a defocused lens that you can recreate with Camera Lens Blur. If I type blur into my Effects and Presets, you'll notice I have quite a few options, even more if I have third-party effects installed. Almost all of these are some variation on Gaussian blur. They use an algorithm to mix adjacent pixels together. It works pretty well, but it's not going to produce the look of a defocused lens. Not only that, but in After Effects, Gaussian isn't even the most useful blur. A Fast Blur is identical to Gaussian. I'll set them both to 20. But fast blur gives me the option to repeat edge pixels,…

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