I have very few consumer vices, but do love sensibly priced, high quality Japanese precision gadgets (in addition to Canon photo gear, I drive a Subaru and own Casio/Seiko/Citizen watches). After wandering through Olympus and Fuji mirrorless cameras after following my my first photography with a Canon XTi DSLR, I’ve ended up back as a Canon user, both for film (Canonet QL17 and A-1, the latter using FD mount) and digital (RF mount). The Canon Museum is a lot of fun to surf, and PhilipReeve.net has a nice guide to vintage FD lenses.
Along these lines, this is a fun interview with the developers of the new Canon RF 45mm f1.2 (Google-translated from Japanese), followed by a set of images by photographers:
“Hagiwara: However, it was still too early to release a reproduction of the EF lens as it was. So we decided to plan a reproduction of the “FD55mm F1.2AL.” It was Canon’s first lens to use an aspherical lens. After examining the design, we realized that it could be made much smaller, so we started by searching for documents about the “FD55mm F1.2AL” within the company. . . .
Hagiwara: However, the project remained as a proposal and lay dormant for several years, and as the RF lens lineup was completed, we decided to restart it as a reproduction of the EF50mm f/1.2L USM. . . .
Abe: We wanted to meet both the demands of ease of use as a modern product and the taste of depiction due to aberrations, so we carefully considered the balance of image quality. We tried out not only EF lenses and the FD lenses mentioned earlier, but also lenses from the Serenar era (interchangeable lenses from the 1950s) [Paul note: the Serenar 50/1.8 is a really lovely Leica screw-mount lens], looking for a compromise. . . . .
Abe: In the end, we settled on a modern version of the EF50mm f/1.2L USM. Some people who love FD lenses or lenses from the Serenar era may find the blurring lacking. Instead, we ensured that it meets modern quality standards and is comfortable to use. We believe we have achieved a good balance that allows you to casually enjoy shooting at f/1.2 while also being able to experience the unique characteristics of the lens.”
Paul Staniland 