Leica APO-Summicron-SL 90mm f/2 ASPH. Lens

The APO-Summicron-SL 90mm f/2 ASPH. from Leica is a highly regarded short telephoto prime lens, specifically crafted for full-frame L-mount mirrorless cameras, making it an excellent choice for portrait photography. Its optimal focal length is paired with a bright f/2 maximum aperture, which is advantageous for low-light shooting and provides exceptional control over depth of field, allowing for effective subject isolation. The lens features an apochromatic optical design that incorporates anomalous partial dispersion glass to minimize color fringing and chromatic aberrations, ensuring high clarity and accurate color reproduction. Additionally, it includes one aspherical element to mitigate spherical aberrations, enhancing sharpness. To further improve performance in challenging lighting conditions, multi-layer coatings have been applied to reduce flare and ghosting, resulting in greater contrast. The lens is equipped with a Dual Syncro Drive stepping motor, which ensures rapid and silent autofocus capabilities, while a floating elements system guarantees consistent imaging quality across the entire focusing range. Furthermore, an AquaDura coating has been applied to the exposed elements, and the lens design includes seals to enhance durability in adverse environmental conditions.

• Portrait-length 90mm f/2 lens is designed for full-frame Leica L-mount mirrorless cameras, however can also be used with APS-C models where it provides a 135mm equivalent focal length.
  
  
• Bright f/2 maximum aperture benefits working in low-light conditions and also affords greater control over depth of field for working with selective focusing techniques.
  
  
• One aspherical element is used to reduce distortion and spherical aberrations for improved sharpness and accurate rendering.
  
  
• Apochromatic design employs anomalous partial dispersion glass to suppress chromatic aberrations throughout the aperture range for increased color accuracy and clarity.
  
  
• Multi-layer coatings have been applied to individual elements to suppress surface reflections, flare, and ghosting for increased contrast and color fidelity.
  
  
• Dual Syncro Drive stepping motor delivers quick, precise, and near-silent autofocus performance to suit both photo and video applications. This system also avails full-time manual focus override.
  
  
• Floating elements system and an internal focusing design maintain consistent image quality throughout the focusing range, from 2' to infinity.
  
  
• Water-repellent AquaDura coating has been applied to the front and rear optical surfaces to protect against moisture and other elements.
  
  
• Weather-sealed design protects against dust and moisture to benefit working in inclement shooting conditions.