Zeiss's Contax standard zoom — the Vario-Sonnar T* 28-70mm f/3.5-4.5, manual-focus glass for the C/Y mount.
The Zeiss Vario-Sonnar T* 28-70mm f/3.5-4.5 was a standard zoom for the Contax/Yashica mount, one of the later zooms in the line released in the late 1990s. The Vario-Sonnar name marks it as a Zeiss zoom design.
This is a manual-focus C/Y-mount zoom spanning 28-70mm with a variable maximum aperture of f/3.5 at the wide end to f/4.5 at the long end. It covered wide to short-telephoto framing in a single lens. Further specifications are omitted where they cannot be verified.
The 28-70mm range makes it a flexible walk-around zoom for travel, landscape, street and general use, covering the focal lengths most often needed day to day. The T* coating supported contrast across the range.
Used copies offer zoom convenience in a Contax Zeiss body at moderate prices. Check the zoom and focus actions for smooth, even travel, look for internal haze, fungus and coating wear, and confirm clean aperture blades. It adapts to mirrorless with a C/Y adapter.