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Samyang 1113505101 20mm F1.8 ED AS UMC DSLR Lens — main product image
Samyang

Samyang 1113505101 20mm F1.8 ED AS UMC DSLR Lens

★★★★★3.2 (2 reviews)

Capture Expansive Views with a Bright ApertureThe Samyang 20mm F1.8 ED AS UMC lens broadens your photographic perspective. Designed for full-frame cameras, this wide-angle lens features 13 elements in 12 groups, including aspherical lenses to minimize aberrations and deliver high optical resoluti...

$584.63*
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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

Capture Expansive Views with a Bright Aperture

The Samyang 20mm F1.8 ED AS UMC lens broadens your photographic perspective. Designed for full-frame cameras, this wide-angle lens features 13 elements in 12 groups, including aspherical lenses to minimize aberrations and deliver high optical resolution. Its fast F1.8 aperture is ideal for low-light shooting and astrophotography, while its lightweight design ensures comfortable handling.

Specifications:

  • Focal Length: 20mm
  • Aperture: F1.8
  • Format Compatibility: Full Frame
  • Optical Construction: 13 elements in 12 groups (including 2 aspherical lenses)
  • Weight: Approximately 500g (depending on mount)

Key Features

Ultra wide angle lens 20 mm F1.8

Specially designed for CSC and APSC cameras

Manual focusing

Manufacturer's warranty: 5 years when sold and dispatched by .de. When sold and dispatched by a third party, the information of the respective seller applies

Box contents: Samyang 20 mm F1.8 ED AS UMC lens for Sony connection; sun visor; protective cap for lens and connection thread; lens protection bag; instructions (English language not guaranteed)

Specifications

Focal Length
20 mm
Maximum Aperture
F1.8
Focus Type
Manual Focus
Lens Type
Ultra Wide Angle
Camera Compatibility
CSC and APSC cameras
Warranty (from .de)
5 years

Pros & Cons

👍 Pros

  • Features an ultra-wide 20mm focal length with an F1.8 aperture for diverse photographic applications.
  • Designed for compatibility with CSC and APSC camera systems, offering versatility for specific camera types.
  • Includes a dedicated sun visor, protective lens caps, and a lens protection bag for practical use and storage.
  • Offers a 5-year manufacturer's warranty when purchased from an authorized .de seller for enhanced assurance.
  • The manual focusing mechanism allows for precise control over focus, beneficial for specific creative shots.

👎 Cons

  • Manual focusing operation may be challenging for users accustomed to autofocus systems or fast-paced shooting.
  • The warranty duration may vary significantly if the product is not sold and dispatched directly by an authorized .de seller.
  • The included instructions may not be provided in English, potentially leading to a language barrier for some users.
  • The 20mm fixed focal length, while wide, lacks the zoom flexibility of variable focal length lenses.
  • Specifically designed for CSC and APSC cameras, limiting its use with full-frame DSLR systems.

Frequently Asked Questions

This lens is specifically designed for CSC (Compact System Camera) and APSC (Advanced Photo System type-C) cameras, ensuring optimal performance with these sensor sizes.
The Samyang 20mm F1.8 ED AS UMC DSLR Lens features manual focusing, providing photographers with precise control over their depth of field and focus points.
The box contents include the Samyang 20 mm F1.8 ED AS UMC lens for Sony connection, a sun visor, protective caps for the lens and connection thread, a lens protection bag, and instructions.
The manufacturer's warranty is 5 years when the lens is sold and dispatched by an authorized .de retailer. For third-party sellers, the warranty information of that specific seller applies.
While it is a DSLR lens, its design is optimized for CSC and APSC cameras, which means it may not cover the full-frame sensor adequately or produce desired results on full-frame DSLRs.

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