Michael Topham samples Samyang’s latest manual-focus prime lens, which is designed 
with today’s mirrorless users in mind

Product Overview

Overall rating:

Samyang 21mm 
f/1.4 ED AS UMC CS

Product:

Samyang 21mm 
f/1.4 ED AS UMC CS review

Manufacturer:

Price as reviewed:

£279.00

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Samyang 21mm 
f/1.4 ED AS UMC CS review: Introduction

The growing number of mirrorless models on the market has seen 
a gradual rise in the number of third-party lenses produced for smaller system cameras. Samyang is one of the latest manufacturers to add a pair of lenses to its mirrorless line-up and we’ve recently taken delivery of the 21mm f/1.4 ED AS UMC CS and the 50mm f/1.2 AS UMC CS. Both lenses are compatible with Canon EF-M, Fujifilm X, Micro Four Thirds and Sony E mounts, and in this test we’re focusing on the wider of the two.

Designed for those who’ll appreciate its fast aperture and wide focal length, the 21mm f/1.4 ED AS UMC CS shares the same optical design as Samyang’s 21mm T1.5 ED AS 
UMC CS. The latter is squarely aimed at 
video users and differs slightly from the lens we’re looking at here in the way it features a de-clicked aperture ring for silent operation, as well as a distance scale and T numbers on both sides of the lens. Mounted to a mirrorless camera featuring an APS-C-sized sensor, 
the 21mm f/1.4 is equivalent to 31.5mm, whereas it’s comparable to a 42mm fixed lens attached to a Micro Four Thirds body. Before examining our lab results, let’s first familiarise ourselves with the key features.

  1. 1. Samyang 21mm 
f/1.4 ED AS UMC CS review: Introduction
  2. 2. Samyang 21mm 
f/1.4 ED AS UMC CS review: Features
  3. 3. Samyang 21mm 
f/1.4 ED AS UMC CS review: Build and handling
  4. 4. Samyang 21mm 
f/1.4 ED AS UMC CS review: Image quality
  5. 5. Samyang 21mm 
f/1.4 ED AS UMC CS review: Resolution, shading and curvilinear distortion
  6. 6. Samyang 21mm 
f/1.4 ED AS UMC CS review:  Verdict
  7. 7. Page 7
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