Leica Tri-Elmar-M 16-18-21mm f/4 ASPH. Lens

The Tri-Elmar-M 16-18-21mm f/4 ASPH. from Leica is an exceptionally adaptable super-wide lens that enables the use of three distinct focal lengths within a single unit. Its optical configuration, featuring two aspherical elements, significantly minimizes distortion, ensuring precise and clear representation of interior and architectural scenes. Additionally, these aspherical elements contribute to a more compact design. Users can effortlessly transition between the 16mm, 18mm, and 21mm focal lengths while maintaining a minimum focusing distance of 1.6 feet, and the incorporation of floating elements ensures high image quality even at close distances.

• Unique three-focal-length lens gives you the option to seamlessly switch between the 16mm, 18mm, and 21mm focal length positions to adjust your field of view.
  
  
• Super wide-angle lens has been designed to notably reduce distortion and field curvature to suit photographing interior and architectural subjects.
  
  
• Two aspherical elements are featured to limit spherical aberrations and improve sharpness and clarity throughout the aperture range and at each focal length setting.
  
  
• An internal manual focusing design is used along with a floating elements system to achieve consistent image quality throughout the focusing range at each focal length, even at the minimum focusing distance of 1.6'.
  
  
• The aspherical elements also contribute to a more compact form factor.
  
  
• The front of the lens is male threaded to accept the included lens hood or an optional 67mm filter holder.