Leica

Leica 11891 50mm f/1.4 Summilux-M Aspherical Lens Black

4.8 (13 reviews)
f/1.4

Experience Unrivaled Image Quality with this High-Performance LensThe Leica 50mm f/1.4 Summilux-M Aspherical Lens delivers exceptional optical performance and sharpness. Featuring advanced lens technology, including aspherical elements and anomalous partial dispersion glass, this lens ensures out...

$3,846.65*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

Experience Unrivaled Image Quality with this High-Performance Lens

The Leica 50mm f/1.4 Summilux-M Aspherical Lens delivers exceptional optical performance and sharpness. Featuring advanced lens technology, including aspherical elements and anomalous partial dispersion glass, this lens ensures outstanding image quality with minimal distortion.

  • Brand: Leica
  • Model: 11891
  • Focal Length: 50mm
  • Aperture: f/1.4
  • Optical Construction: 8 elements in 5 groups
  • Consists of eight lens in 5 groups
  • Glass with anomalous partial dispersion
  • Made of a fluorite-type glass while lens element
  • Made of glass with a very high refractive index to minimize monochromatic aberrations
  • Special Features: Aspherical Lens, Floating Element
  • Color: Black

Key Features

Consists of eight lens in 5 groups

Glass with anomalous partial dispersion

Made of a fluorite-type glass while lens element

Made of glass with a very high refractive index to minimize monochromatic aberrations

Specifications

Focal Length
50mm
Maximum Aperture
f/1.4
Lens Construction
8 elements in 5 groups
Glass Type
Anomalous partial dispersion, fluorite-type, high refractive index
Color
Black

Pros & Cons

👍 Pros

  • This lens consists of eight individual lens elements arranged in five groups, indicating complex optical engineering.
  • It incorporates glass with anomalous partial dispersion, which helps to minimize chromatic aberrations for clearer images.
  • A fluorite-type glass element is used, known for its excellent optical properties in reducing color fringing.
  • Utilizes lens elements made of glass with a very high refractive index to specifically minimize monochromatic aberrations.
  • The f/1.4 aperture allows for excellent low-light performance and shallow depth of field for creative photography.

👎 Cons

  • The description lacks specific details on dimensions or weight, which are important for handling and portability considerations.
  • Information regarding filter thread size is not provided, making it difficult for users to select appropriate filters.
  • There is no mention of weather sealing or dust resistance, which could be a concern for outdoor photographers.
  • The lens is manual focus, which might be a limitation for users accustomed to or requiring autofocus capabilities.
  • Specific details about lens coatings are not mentioned, which can affect flare resistance and contrast.

Frequently Asked Questions

The Leica 11891 lens has a maximum aperture of f/1.4, allowing for excellent low-light performance and shallow depth of field.
This lens uses glass with anomalous partial dispersion and a fluorite-type glass element, along with elements made of high refractive index glass to minimize various aberrations.
The Leica 11891 Summilux-M Aspherical Lens consists of eight lens elements arranged in five groups.
This is a 50mm prime lens, indicating a fixed focal length.
It aims to minimize both monochromatic aberrations and chromatic aberrations through its specialized glass elements.