The Canon EOS 50D 2009 David D Busch, Course Technology book is a textbook designed for photographers looking to learn more about the Canon EOS 50D camera. Authored by David D. Busch, this publication from Course Technology offers in-depth information and education on how to effectively use this specific camera model. Released in 2009, this book is a valuable resource for those looking to enhance their photography skills and understand the capabilities of the Canon EOS 50D.