The new Lens Correction feature in Adobe Photoshop CS5, Adobe Camera Raw 6.1 or later, and Adobe Photoshop Lightroom 3 does a great job of removing various forms of distortion that you find in all kinds of lenses—from phone cameras to $1500 pro lenses. But there’s nothing stopping you from taking Lens Correction a step further: using it as a creative tool that can strengthen your compositions and spice up your images.

Click the link below to read the article at Peachpit.com:
Exploring Creative Lens Correction in Adobe Photoshop CS5 and Lightroom 3