Image editing has become a crucial element in the photographic workflow. Image editing tools most notably Photoshop are usually sophisticated & deep applications & are fairly expensive. The only open source tool in this market is the GIMP which has developed into a powerful multiplatform system running on Linux Mac OS X & Microsoft Windows. GIMP 2.6 for Photographers is a beginners guide to the only open source image editing tool that provides a low-cost alternative to expensive programs such as Photoshop. Topics include the basics of image editing & simple adjustments as well as advanced techniques using layers & masks stitching panoramic images & preparing high-quality black & white images. The most important editing functions are presented in individual easy-to-follow workshops. GIMP 2.6 for Photographers has evolved from classroom materials that the author developed & taught in courses & workshops on image editing with the GIMP.