saizo'sblog

The Nikon Ai-S Micro-Nikkor 55mm f/2.8 is a manual focus macro lens for Nikon F-mount cameras. In my experience, a stiff focus is a common problem with this…

This is a follow-up to my CONTAX Planar T* 50mm f/1.4 balsam separation repair. It is the same lens. After the two pieces of glass were cemented together…

The Nikon Ai-S Nikkor ED 300mm f/4.5 IF is a telephoto lens for Nikon F-mount cameras. This one is engraved “Nikkor ★ED 300mm 1:4.5”. I worked on it in…

The Leica Elmar 5cm f/3.5 is a small standard lens for Leica screw-mount (L39) cameras. This one is engraved “Leitz Elmar f=5cm 1:3,5”, with “Feet” and…

The Olympus H.Zuiko Auto-S 42mm f/1.2 is the fast standard lens made for the Olympus Pen F series of half-frame SLR cameras. This one came to me with heavy…

The CONTAX Carl Zeiss Planar T* 50mm f/1.4 is the standard fast lens for the Contax/Yashica (C/Y) mount. This one is marked “Lens made in Japan” on the…

The Leica Summitar 5cm f/2 is a standard lens for Leica screw-mount (L39) cameras, engraved “Ernst Leitz Wetzlar” on the front. I worked on this one in…

The Nikon Ai-S Nikkor 35mm f/1.4 is a fast, wide-angle prime for Nikon F-mount cameras. I serviced this one in September 2024. This post walks through the…