The 56mm f/1.4 DC DN is a notably elegant portrait-length prime lens that belongs to Sigma's Contemporary series, specifically engineered for APS-C-format L-mount mirrorless cameras. This lens is distinguished by its bright f/1.4 maximum aperture, making it ideal for challenging lighting situations while also providing enhanced control over depth of field, allowing for effective subject isolation and selective focus techniques. Its optical construction incorporates two aspherical elements and one SLD element, which work together to minimize both spherical and chromatic aberrations, resulting in superior sharpness and clarity. Additionally, a super multilayer coating has been applied to mitigate flare and ghosting, thereby enhancing contrast and color fidelity in bright lighting environments. The lens is further complemented by a stepping autofocus motor, which is well-suited for both photography and videography due to its rapid, accurate, and nearly silent operation.

• As part of the Contemporary line within Sigma's Global Vision series, this lens is designed to achieve a balance between convenience and performance, and meshes a compact, lightweight build and versatile handling with notable optical attributes.
  
  
• Portrait-length prime is designed for APS-C-format Leica L-mount mirrorless cameras and provides an 84mm equivalent focal length.
  
  
• Bright f/1.4 maximum aperture excels in low-light conditions and also affords increased control over depth of field for achieving selective focus effects.
  
  
• One special low dispersion (SLD) element reduces color fringing and chromatic aberrations in order to achieve greater clarity and color accuracy.
  
  
• Two aspherical elements are used to limit distortion and spherical aberrations and also contribute to greater overall sharpness and accurate rendering.
  
  
• A super multilayered coating has been applied to lens elements in order to minimize lens flare and ghosting and contribute to producing contrast-rich and color-neutral imagery, even in backlit conditions.
  
  
• A stepping AF motor benefits both photographers and videographers with its fast, precise, and near-silent performance.
  
  
• Rounded nine-blade diaphragm contributes to a smooth and pleasing bokeh quality.
  
  
• The bayonet mount is constructed from brass to ensure accuracy and durability. Additionally, rubber sealing is incorporated in the mount design to render it dust and splash resistant.