Photoshop Lightroom 2 provides a single environment that has all of the functions photographers most commonly need to perform on their images, in the cleanest, least cluttered, easiest to use package. Lightroom contains a focused set of features that are intuitive, powerful, and easy to learn. It is an image-editing tool and a workflow productivity tool. Photographers who require extensive painting and compositing tools and need to edit their images at the pixel level will still use Photoshop CS4 to achieve their additional goals.