Mark Hamburg, who had been chief architect of Adobe Photoshop and who launched the Adobe effort that became Adobe Photoshop Lightroom, resigned from Adobe after 17 years and is joining Microsoft.

In a blog post April 25, Martin Evening, who follows Adobe, said Hamburg "joined Adobe in the fall of 1990, not long after Photoshop 1.0 was released, and was instrumental in devising many of the 'wow' features we have all come to love and rely on daily when we work with Photoshop."

In a statement, Microsoft said, "Hamburg is a legend in the creative professional software world, a pioneer behind the development of Photoshop, and … Microsoft is excited to have Mark on the team tasked with leading the next revolution [and] wave of innovation in the creative professional software market."