The only open source tool in this market is the GIMP, which has developed into a system, powerful multiplatform runs on Linux, Mac OS X, and Microsoft Windows. GIMP 2.6 for Photographers is a beginner guide for the only open source image editing tool that provides low-cost alternative to expensive programs like Photoshop. Topics include the basics of image editing and simple adjustments, as well as advanced techniques using layers and masks, stitching panoramic images, and prepare a black and white images of high quality.