With CS3’s Smart Filters, you can edit any filter at any time, without destroying any pixels. Here’s an article at creativepro.com by Andrew Shalat on how to use Photoshop’s Smart Filters. You’ll walk away from this article knowing how to create Smart Objects

and layers; how to apply Smart Filters; and how to use a Smart Layer Mask to make fine adjustments to your images. And you’ll do it all without losing any pixels. (posted by Jennifer Apple for www.PhotoshopSupport.com)

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