Photoshop is a software application used for image editing and photo retouching. It has the ability, and is widely used, to create enhance, or otherwise edit images, artwork and illustrations. Changing backgrounds, simulating a real-life painting, or creating image compositions. It is most widely used for photo editing, image manipulation and retouching for numerous image and video file formats. Modifying already created images, creating artwork and illustrations, adding effects, e.g. movie posters, book covers, graphic design and image manipulation for online or in-print. It uses a layer based editing system that enables image enhancing, editing or retouching without affecting the original image.