The promise of digital photography is that it can help any amateur develop into a backyard Ansel Adams, given the right camera, software and dedication. Imaging software company Adobe Systems has known this since 1990, when it rolled out version 1.0 of its trailblazing Photoshop software; it has followed that with a host of related products aimed at different segments of the digital imaging market. Tuesday’s release of Photoshop Lightroom 2.0 is designed to narrow the gap between the serious amateur photographer and the professional.