Seán Duggan is a fine art photographer, photo educator, and author who has been helping photographers master digital photography and digital darkroom techniques since 1997. He is on the faculty of the School of Visual Arts in New York City and he leads workshops and seminars at venues across the country. He has online courses on Photoshop and digital photography on and he is the co-author of Photoshop Masking & Compositing, Real World Digital Photography, and The Creative Digital Darkroom. His web site can be seen at