"Digital Portrait Photography: Art, Business and Style" by Steve Sint is a definitive guide to portrait photography in the digital age. Published in 2009 by Lark Books in the United States, this paperback book offers 224 pages of insights and inspiration for photographers looking to enhance their skills and business. With a focus on English language and providing valuable information on art, business, and style in digital portrait photography, this book is a must-have for any photographer looking to elevate their craft and income.