On March 23-26, 2006, Photo Imaging Expo (PIE 2006) will be held at Tokyo Big Sight.
This is THE photo expo in Japan where you can find small-format cameras and accessories, large-format and professional equipment, and minilabs.
It is Asia’s largest photo trade show. Opening hours: 10:00 - 17:00 (till 16:00 on last day). Admission 1,000 yen.
English Web site: http://www.pie2006.com/
The Web site includes information (including rates) on having a booth at the show.