Zeiss's compact M-mount wide — Biogon 28mm f/2.8 for Leica rangefinders with T* coating.
The Zeiss Biogon T* 28mm f/2.8 ZM is a compact wide-angle prime for Leica M-mount. The Biogon formula provides low distortion and even illumination — well-suited to the rangefinder form factor. An affordable alternative to Leica's own 28mm.
Optically good — the Biogon formula delivers low distortion at 28mm with T* coating for flare control. Sharp from f/5.6. The 28mm is a popular M-mount street focal length. Manual focus with rangefinder coupling.
Leica M mount with 46mm filter thread. Compact and lightweight. Rangefinder coupled. T* multi-coating. All-metal construction. No electronic contacts. Manual focus.
Available used at mid-range prices — significantly cheaper than Leica's own 28mm options. The Biogon formula suits rangefinder cameras well. For budget M-mount shooters wanting quality 28mm at accessible pricing. The Voigtlander 28mm is even cheaper.