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Rokinon RK21M-E-SIL 21mm f/1.4 Lens Sony E-Mount Silver — main product image
Rokinon

Rokinon RK21M-E-SIL 21mm f/1.4 Lens Sony E-Mount Silver

★★★★★5.0 (2 reviews)
f/1.4

Elevate Your Vision with the Rokinon 21mm F1.4 Wide Angle Lens Capture breathtaking landscapes and stunning portraits with the Rokinon 21mm F1.4 ED AS UMC High Speed Wide Angle Lens. Designed for mirrorless cameras, this lens delivers exceptional image quality and versatility. Specifications ...

$349.00*
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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

Elevate Your Vision with the Rokinon 21mm F1.4 Wide Angle Lens

Capture breathtaking landscapes and stunning portraits with the Rokinon 21mm F1.4 ED AS UMC High Speed Wide Angle Lens. Designed for mirrorless cameras, this lens delivers exceptional image quality and versatility.

Specifications

  • Focal Length: 21mm
  • Aperture: F1.4
  • Mount: Sony E
  • Optical Design: 8 Elements in 7 Groups
  • Lens Elements: 3 Aspherical, 1 ED Glass
  • Coating: Rokinon Ultra Multi-Coated (UMC)
  • Aperture Range: f1.4-f23
  • Lens Hood: Petal Shaped
  • Color: Silver

Key Features

Lens features Rokinon Ultra Multi-Coated (UMC) optical glass for sharp, clear images

Ultra wide 12mm fixed focal length with aperture range f1.4-f23

Constructed of 8 lens elements in 7 lens groups

Petal Shaped Lens Hood

Specifications

Lens Type
Ultra-wide Angle Prime
Focal Length
12mm (fixed)
Maximum Aperture
f/1.4
Minimum Aperture
f/23
Optical Construction
8 elements in 7 groups
Lens Coating
Rokinon Ultra Multi-Coated (UMC)
Mount Type
Sony E-Mount
Included Accessory
Petal Shaped Lens Hood

Pros & Cons

👍 Pros

  • Features Rokinon Ultra Multi-Coated (UMC) optical glass, designed to produce sharp, clear images.
  • Offers an ultra-wide 12mm fixed focal length, ideal for expansive landscapes, architecture, and interior shots.
  • Equipped with a wide f/1.4 maximum aperture, excellent for low-light photography and achieving appealing shallow depth of field.
  • The aperture range extends to f/23, providing extensive control over depth of field in various lighting conditions.
  • Constructed with 8 lens elements in 7 lens groups, indicating a sophisticated optical design for image quality.
  • Includes a petal-shaped lens hood, which helps reduce flare and provides some physical protection for the front element.

👎 Cons

  • As a fixed focal length lens, it lacks zoom capability, requiring physical movement to change perspective.
  • The 12mm focal length is ultra-wide, which may not be suitable for all types of photography, particularly portraits without distortion.
  • Specific details on autofocus capabilities or if it is a manual focus lens are not provided in the features.
  • The material construction of the lens barrel or mount is not specified beyond its optical elements.
  • The weight and dimensions of the lens are not listed, which can be an important factor for portability with Sony E-Mount cameras.

Frequently Asked Questions

This Rokinon lens features an ultra-wide 12mm fixed focal length, making it ideal for capturing expansive scenes.
The lens boasts a wide f/1.4 maximum aperture, which is highly beneficial for low-light photography and creating blurred backgrounds.
Yes, it incorporates Rokinon Ultra Multi-Coated (UMC) optical glass to ensure sharp and clear images by minimizing reflections.
The lens is constructed of 8 lens elements arranged in 7 distinct lens groups, indicating a complex optical design.
This particular Rokinon lens is designed for Sony E-Mount cameras, ensuring compatibility with a range of Sony mirrorless systems.
Yes, it includes a petal-shaped lens hood, which helps to prevent lens flare and offers some protection to the front element.

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