Does Samyang's fast prime for mirrorless cameras represent a bargain at under £300? Michael Topham gives it a thorough test

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Overall rating:

Samyang 50mm f/1.2 AS UMC CS

Product:

Samyang 50mm f/1.2 AS UMC CS review

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Price as reviewed:

£299.00

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Samyang 50mm f/1.2 AS UMC CS review – Test results

Resolution

Samyang-50mm-MTF

Our Applied Imaging tests tell us the sharpness is comparable at the corners and the centre at f/1.2. There’s a noticeable spike in sharpness in the centre between f/2 and f/2.8, with the sweet spot of sharpness at the centre and edge being located close to f/4. Close the lens down beyond f/4 and the centre sharpness starts to drop a little, but acceptable sharpness is maintained up to f/11.

Shading

50mm f/1.2

50mm f/1.2

50mm f/2.8

50mm f/2.8

Corners appear approximately 0.7EV darker than the centre of the image at f/1.2. This is impressive for such a fast prime, and corner shading is quick to disappear when it’s closed down. There is an obvious improvement at f/1.4, and by the time you reach f/2 edges are 0.3EV darker than the centre. Vignetting won’t be an issue between f/2.8 and f/16.

Curvilinear distortion

50mm, SMIA TV = -0.0%

50mm, SMIA TV = -0.0%

A close study of our distortion chart reveals the lens puts in a great performance, and compared with the Samyang 21mm f/1.4, which displayed minor barrel distortion in its images, this lens renders horizontal and vertical lines straight with no obvious signs of barrel or pincushion distortion.

  1. 1. Samyang 50mm f/1.2 AS UMC CS review - Introduction
  2. 2. Samyang 50mm f/1.2 AS UMC CS review - Features
  3. 3. Samyang 50mm f/1.2 AS UMC CS review - Build and handling
  4. 4. Samyang 50mm f/1.2 AS UMC CS review - Image quality
  5. 5. Samyang 50mm f/1.2 AS UMC CS review - Test results
  6. 6. Samyang 50mm f/1.2 AS UMC CS review - Our verdict
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