Sigma Corporation (株式会社シグマ, Kabushiki-gaisha Shiguma) is a Japanese company, manufacturing cameras, lenses, flashes and other photographic accessories...

Panasonic". "Sigma announces ultra-compact 'fp' L-mount camera, teases full-frame Foveon sensor". DPReview. シグマ、開発中のフルサイズFoveonセンサーを白紙に "Leica SL lenses"...