To celebrate the 20th anniversary of Photoshop, Russell Brown -- one of the program's original development team members -- has released a special iPhone application to select attendees of the Photoshop 20th Anniversary Event. The app is a replica of the original v1.0 release of Photoshop, which Adobe debuted on the Mac in 1990. The new title took two weeks to make, and lets users adjust things like the white/black levels of photos and separate red, blue and green channels.
