Written by expert photographers, Ammonite's The Expanded Guides describe the featured camera in detail, providing a comprehensive user's manual that includes: A step-by-step guide to the camera's basic and advanced functions; Professional guidance on exposure, depth of field, and use of flash; Advice on lenses, accessories, and connection to external devices; Practical tips on lighting, macro photography, and camera care; and a pull-out quick-reference guide card to the icons used on the camera's menus. Canon's Rebel T2i (EOS 550D) digital SLR offers 18Mp resolution and HD video capture, making this entry- to mid-level camera similar in specification to its high-end EOS 7D model, with a resolution greater than the 15Mp of its EOS 500D DSLR, which allows for larger prints.