Together with the specifications of the MS-Optics History Prot 40mm f/6.3 (a Protar optical formula), Mr. Sadayasu Miyazakialso published a roadmap of the new lenses to follow in the so-called History Series: Dagor 40mm f/6.3 Ernostar 50mm f/1.8 Petzval 58mm f/2 Planar 50mm f/3.7 More MS Optics lenses can be found here. MS Optics lenses can be … Continue reading List of upcoming MS Optics History Series lenses for Leica M-mount