Zeiss's Contax macro telephoto — the Makro-Planar T* 100mm f/2.8, close-focusing manual-focus glass for the C/Y mount.
The Zeiss Makro-Planar T* 100mm f/2.8 was a short-telephoto macro prime for the Contax/Yashica mount, offered from the mid-1980s and highly regarded for close-up and portrait use. The Makro-Planar name marks it as a close-focusing Planar.
This is a manual-focus C/Y-mount lens with a 100mm focal length and a maximum aperture of f/2.8, corrected for a flat field at close distances. The exact maximum reproduction ratio and other figures are omitted where they cannot be verified.
The 100mm focal length gives comfortable working distance for macro subjects, nature detail and product work, and it doubles as a sharp portrait telephoto. Photographers value its combination of close-up correction and pleasant rendering at distance.
This is a sought-after lens that holds strong used prices thanks to its dual role. Check the long focusing helicoid for smooth, even travel, inspect for haze, fungus and coating wear, and confirm clean aperture action. A C/Y adapter allows mirrorless use.