The silver Biogon T* 21mm f/2.8 ZM from ZEISS offers a remarkable combination of an extensive focal length and a compact design, making it an adaptable lens for M-mount rangefinder cameras. Its wide-angle configuration is enhanced by the Biogon optical design, which effectively minimizes distortion, ensuring precise and well-corrected image rendering. Furthermore, a T* anti-reflective coating has been applied to the lens elements to mitigate lens flare and ghosting, thereby enhancing color fidelity and contrast even in challenging lighting situations. The lens also features a manual focus mechanism, allowing for close-up work with subjects positioned as near as 1.6 feet.

• Biogon optical concept benefits the super-wide focal length by helping to virtually eliminate distortion for clean, realistic rendering.
  
  
• ZEISS T* anti-reflective coatings have been applied to each lens surface to help minimize reflections in order to provide greater image clarity, contrast, and color fidelity.
  
  
• Manual focus design enables a minimum focusing distance of 1.6'.