 Discouraged by the look of flash photography because of the flashlight-shaped light source, Fong found the answer in the soft lighting of a lampshade in a hotel room.This led to the invention and patenting of the Lightsphere, a dome-shaped light diffuser, which was introduced in late 2004 and by 2011 had sold more than 400,000 units worldwide.With the advent of digital, Fong knew that online presentation of images would be best matched to an instant print delivery service.