According to Official Guinness Records,
Shinichi Yamamoto (Japan) printed a photograph 145 m (475 ft 8 in) long and 35.6 cm (14 in) wide, after producing a single photographic negative 30.5 m (100 ft) long and 7 cm (2.75 in) wide using a handmade panoramic camera on 18 december 2000.
For a complete list of Unknown date records, please visit Unknown date Guinness Records in Japan.