
Sigma registered some patients in Japan for 16mm f/2, 18mm f/1.8, 18mm f/2.8, 20mm f/1.8, 24mm f/1.8, 28mm f/1.8, and 35mm f/1.8 designs. [Publication number] JP 2020-16755 (P2020-16755A) [Release Date] January 30, 2020 [Title of the Invention] Imaging optical system [Date of application] July 25, 2018 [Applicant] [Identification number] 000131326 [Name or name] Sigma Corporation […]




