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Samyang 20mm F1.8 ED AS UMC Sony FE Review

Samyang 20mm F1.8 ED AS UMC

Main Features

  • 20mm Focal Range
  • F1.8 Max Aperture
  • Filter Thread: 77mm
  • Max Format: 35mm FF
  • Sony E Mount
  • Weight: 497g.
  • Diameter: 83mm
  • Length: 88mm
  • Min Focus Distance:0.2m
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Samyang 20mm F1.8 Overview

Samyang 20mm F1.8 is a Manual Focus (MF) Ultra-Wideangle Prime lens with 35mm FF max sensor coverage and it is designed to be used with Sony E mount cameras.

Lenses in Sony E Mount with Same Focal and Aperture Range
Model Coverage Weight Focusing Street Price
Sony FE 20mm F1.8 G Lens Sony FE 20mm F1.8 G
Compare
35mm FF 373gr AF Amazon B&H Photo

Lens Mount

Samyang 20mm F1.8 is compatible with cameras that have Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A7 IV, Sony ZV-E10 and Sony A1.

Samyang 20mm F1.8 is also available in Canon EF , Canon EF-M, Fujifilm X, Micro Four Thirds, Nikon F (FX), Pentax KAF, Samsung NX and Sony Alpha mounts.

Focal Range

Samyang 20mm F1.8 has a fixed focal lenght of 20mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 30mm.

Aperture

Samyang 20mm F1.8 has a max aperture of F1.8 and a minimum aperture of F22.

Optical Formula

Samyang 20mm F1.8's optical formula consists of 13 elements in 12 groups . Following special elements are used in this design:

  • Two aspherical
  • 3 ED elements
  • Ultra Multi Coating

Lens Hood

Samyang 20mm F1.8 comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.

Popular Comparisons of Samyang 20mm F1.8

Here is the eight most popular comparisons of Samyang 20mm F1.8 amongst Camera Decision readers.

Top Alternatives of Samyang 20mm F1.8 Lens
Model Coverage Weight Focusing Street Price
Sony FE 20mm F1.8 G Lens Sony FE 20mm F1.8 G
Compare
35mm FF 373gr AF Amazon B&H Photo
Samyang AF 18mm F2.8 FE Lens Samyang AF 18mm F2.8 FE
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35mm FF 145gr AF Amazon B&H Photo
Tamron 20mm F2.8 Di III OSD M1 2 Lens Tamron 20mm F2.8 Di III OSD M1 2
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35mm FF 220gr AF Amazon B&H Photo
Tokina Firin 20mm F2 FE MF Lens Tokina Firin 20mm F2 FE MF
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35mm FF 490gr MF Amazon B&H Photo
Samyang AF 24mm F2.8 FE Lens Samyang AF 24mm F2.8 FE
Compare
35mm FF 93gr AF Amazon B&H Photo
Sigma 20mm F2 DG DN C Lens Sigma 20mm F2 DG DN C
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35mm FF 370gr AF Amazon B&H Photo
Sigma 16mm F1.4 DC DN Sony E-mount Lens Sigma 16mm F1.4 DC DN Sony E-mount
Compare
APS-C / DX 405gr AF Amazon B&H Photo
Sony FE 24mm F1.4 GM Lens Sony FE 24mm F1.4 GM
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35mm FF 445gr AF Amazon B&H Photo

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**This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.

Pros and Cons of Samyang 20mm F1.8 ED AS UMC


PROs
Hood supplied
Full-time Manual Focusing
Fast Aperture
Covers Full-Frame Sensor

CONs
No Weather Sealing
No Autofocus
Samyang 20mm F1.8 ED AS UMC Alternatives in Sony E Mount
Model Coverage Weight Focusing Street Price
Sigma 20mm F1.4 DG DN Art Lens Sigma 20mm F1.4 DG DN Art
Compare
35mm FF 635gr AF Amazon B&H Photo
Sigma 24mm F1.4 DG DN Art Lens Sigma 24mm F1.4 DG DN Art
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35mm FF 520gr AF Amazon B&H Photo
Sony FE 20mm F1.8 G Lens Sony FE 20mm F1.8 G
Compare
35mm FF 373gr AF Amazon B&H Photo
Sony Carl Zeiss Sonnar T E 24mm F1.8 ZA Lens Sony Carl Zeiss Sonnar T E 24mm F1.8 ZA
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APS-C / DX 225gr AF Amazon B&H Photo
Sony E 16mm F2.8 Pancake Lens Sony E 16mm F2.8 Pancake
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APS-C / DX 74gr AF Amazon B&H Photo
Sony E 20mm F2.8 Lens Sony E 20mm F2.8
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APS-C / DX 69gr AF Amazon B&H Photo
Sony FE 24mm F2.8 G Lens Sony FE 24mm F2.8 G
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35mm FF 162gr AF Amazon B&H Photo
Sony FE 24mm F1.4 GM Lens Sony FE 24mm F1.4 GM
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35mm FF 445gr AF Amazon B&H Photo
Venus Laowa 24mm F14 2x Macro Probe Lens Venus Laowa 24mm F14 2x Macro Probe
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35mm FF 474gr MF Amazon B&H Photo
Tamron 20mm F2.8 Di III OSD M1 2 Lens Tamron 20mm F2.8 Di III OSD M1 2
Compare
35mm FF 220gr AF Amazon B&H Photo
Tamron 24mm F2.8 Di III OSD M1-2 Lens Tamron 24mm F2.8 Di III OSD M1-2
Compare
35mm FF 215gr AF Amazon B&H Photo
Sigma 20mm F2 DG DN C Lens Sigma 20mm F2 DG DN C
Compare
35mm FF 370gr AF Amazon B&H Photo
Samyang 16mm f2.0 ED AS UMC CS Lens Samyang 16mm f2.0 ED AS UMC CS
Compare
APS-C / DX 583gr MF Amazon B&H Photo
Samyang AF 18mm F2.8 FE Lens Samyang AF 18mm F2.8 FE
Compare
35mm FF 145gr AF Amazon B&H Photo
Samyang 24mm f1.4 ED AS UMC Lens Samyang 24mm f1.4 ED AS UMC
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35mm FF 580gr MF Amazon B&H Photo
Samyang T-S 24mm f3.5 ED AS UMC Lens Samyang T-S 24mm f3.5 ED AS UMC
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35mm FF 680gr MF Amazon B&H Photo
Sigma 16mm F1.4 DC DN Sony E-mount Lens Sigma 16mm F1.4 DC DN Sony E-mount
Compare
APS-C / DX 405gr AF Amazon B&H Photo
Tokina Firin 20mm F2 FE MF Lens Tokina Firin 20mm F2 FE MF
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35mm FF 490gr MF Amazon B&H Photo
Sigma 24mm F3.5 DG DN C Lens Sigma 24mm F3.5 DG DN C
Compare
35mm FF 225gr AF Amazon B&H Photo
Samyang AF 24mm F1.8 FE Lens Samyang AF 24mm F1.8 FE
Compare
35mm FF 230gr AF Amazon B&H Photo
Samyang AF 24mm F2.8 FE Lens Samyang AF 24mm F2.8 FE
Compare
35mm FF 93gr AF Amazon B&H Photo
Sigma 19mm F2.8 DN Lens Sigma 19mm F2.8 DN
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APS-C / DX 140gr AF Amazon B&H Photo
Sigma 19mm F2.8 EX DN Lens Sigma 19mm F2.8 EX DN
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APS-C / DX 140gr AF Amazon B&H Photo
ZEISS Loxia 21mm F2.8 Lens ZEISS Loxia 21mm F2.8
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35mm FF 394gr MF Amazon B&H Photo
Sigma 24mm F2 DG DN C Lens Sigma 24mm F2 DG DN C
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35mm FF 365gr AF Amazon B&H Photo
Tokina atx-m 23mm F1.4 E Lens Tokina atx-m 23mm F1.4 E
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APS-C / DX 276gr AF Amazon B&H Photo
Zeiss Batis 18mm F2.8 Lens Zeiss Batis 18mm F2.8
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35mm FF 330gr AF Amazon B&H Photo
Tokina Firin 20mm F2 FE MF Lens Tokina Firin 20mm F2 FE MF
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35mm FF 490gr MF Amazon B&H Photo
Samyang 21mm F1.4 ED AS UMC CS Lens Samyang 21mm F1.4 ED AS UMC CS
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APS-C / DX 275gr MF Amazon B&H Photo

Samyang 20mm F1.8 Detailed Specifications


General
Brand Samyang
Lens Type Prime
Lens Type Wideangle Prime
Lens Mount Sony E
Max Format 35mm FF
Focal Range 20mm
Image Stabilization
Colour Unknown
Zoom Method No Zoom
Power Zoom No Zoom
Zoom Lock No Zoom
Zoom Ratio 1.0X
APERTURE
Max Aperture F1.8
Min Aperture F22
Aperture Ring Yes
Diaphragm Blades 7
Optics
Optical Elements 13
Optical Groups 12
Special Elements Two aspherical + 3 ED elements, Ultra Multi Coating

FOCUSING
Min Focus Distance 0.2m
Max Magnification unknown
Autofocus No
AF Motor Type No AF
Full Time Manual Yes
Focus Method Internal
Distance Scale Yes
PHYSICAL SPECS
Weight 497g
Diameter 83mm
Length 88mm
Weather Sealing No
Filter Thread 77mm
Filter Notes -
Hood Supplied Yes
Tripod Collar No
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Frequently Asked Questions about Samyang 20mm F1.8 ED AS UMC
is the Samyang 20mm F1.8 ED AS UMC a Weather Sealed lens?
What is the Minimum Focusing Distance of Samyang 20mm F1.8 ED AS UMC
is the Samyang 20mm F1.8 ED AS UMC an Autofocus (AF) lens?
What is the Filter Thread Size of Samyang 20mm F1.8 ED AS UMC
Does Samyang 20mm F1.8 ED AS UMC have Image Stabilization?
Does Samyang 20mm F1.8 ED AS UMC have Aperture Ring?
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