Adobe Photoshop

Adobe Photoshop is a graphics editing program developed and published by Adobe Systems Incorporated. There are two versions of Photoshop: Basic and Extended, with Extended having extra features available. Adobe Photoshop Extended is included in all of Adobe's Creative Suite offerings except Design Standard, which has the Basic version.also we can say about cs4, Photoshop CS4 features a new 3D engine allowing painting directly on 3D models, wrapping 2D images around 3D shapes, converting gradient maps to 3D objects, adding depth to layers and text, getting print-quality output with the new ray-tracing rendering engine.