Photoshop Top 40 with Deke McClelland #14 - Gaussian Blur
In this video Deke explains how Gaussian Blur is used throughout Photoshop for both softening and sharpening pixels in your images. He shows you the math behind Unsharp Mask and how it uses Gaussian Blur to do it.
Gaussian Blur is a filter that blurs an image and can be used to soften skin, make smooth edges, and much more. But it's also the math behind the Feather command, drop shadows, and everything that is soft in Photoshop. Watch this video and learn why Gaussian Blur is so important.