Samyang 50mm F1.2 AS UMC CS E-mount lens review by QuietOC

reviewer#44463 date: Feb-4-2020
sharpness: 5
color: 5
build: 5
distortion: 5
flare control: 4
overall: 4.8
tested on:
  • film camera:Film camera
  • APS-C: 6MP6 MP; 10MP10 MP; 12MP12 MP; 14MP14 MP; 16MP16 MP; 20MP20 MP; 24MP24 MP
  • full frame: 12MP12 MP; 24MP24 MP; 36MP36 MP; 42MP42 MP; 61MP61 MP
ownership:I have experience with this lens
compared to:Neewer 35 F1.2
Rokinon 35 F1.2
Minolta 40 F1.7
Konica AR 40 F1.8
Sony FE 40 F2.5 G
Canon EF 40 F2.8 STM
Pentax-M 40 F2.8
Pentax-DA 40 F2.8 XS
Pentax-FA 43 F1.8 Limited
Samyang AF 45 F1.8 FE
Tamron SP 45 F1.8 USD (VC & non VC)
Minolta MD 45 F2
Sigma 45 F2.8 DG DN C
Zeiss 50 F1.4 Planar
Yongnuo 50 F1.4
Canon EF 50 F1.4 USM
Sigma 50 F1.4 EX DG HSM
Minolta MD & AF & Sony AF 50 F1.4
Minolta AF 50 F1.7 & RS
Sony FE 50 F1.8
Canon EF 50 F1.8 STM
Fotasy 50 F1.8
Konica AR 50 F1.8
Vivitar 50 F1.8
Sony DT 50 F1.8 SAM
Sony E 50 F1.8 OSS
Minolta MD 50 F2
Neewer/Meike 50 F2
Minolta MC 55 F1.7
Sony FE 55 F1.8 Sonnar
Minolta SR 55 F2
Konica AR 57 F1.4
Minolta MC 58 F1.4
price paid:213 USD (new)
positive:Center sharpness
Minimum distortion
Smooth focus
Smooth aperture
Half stop detents
Sony control directions
negative:Chromatic aberrations
Unit focus
No electronics
Not brighter than F1.4 primes
62 mm filter threads
comment:A new retail box silver Rokinon branded version with matching silver hood and fabric pouch. This is my third F1.2 lens. The previous ones were both 35's. I was fairly impressed with the Rokinon 35 F1.2 but decided to return it. I'd seen samples from this 50 on full-frame cameras, and the price was attractive. It shares the body with the 35 F1.2 but is slightly lighter. The silver finish is a decent match with my silver A6000. "MADE IN KOREA"

Like the 35 F1.2, this lens is no brighter than F1.4 lenses. It is only about 30% brighter the Sony E 50 F1.8 OSS. The aperture has defined notches already at F1.4. The much cheaper Fotasy 50 F1.8 keeps a more circular aperture.

It almost covers full-frame close-focus especially near F3.4. Even the small full-frame F1.4 lenses have less vignette. Full-frame corners are significantly clipped at infinity and fully stopped down. It seems to be the rear elements that cause the clipping. Like the 35 F1.2 the image quality degrades outside the APS-C crop. The Sony E 50mm F1.8 OSS has less chromatic aberration at the same apertures.

This lens uses a unit focus design. The front shroud with the filter threads is attached to the body and doesn't move with focusing. A large reversible circular bayonet hood is included. The front shroud and hood don't seem to cause the vignette on full-frame.

There is not much reason to use this on APS-C over the smaller, stabilized Sony. The Sigma 56 F1.4 DN Contemporary may also a better choice.

rating summary

lens image
  • total reviews: 1
  • sharpness: 5.00
  • color: 5.00
  • build: 5.00
  • distortion: 5.00
  • flare control: 4.00
  • overall: 4.80 - Home of the alpha system photographer
In memory of Cameron Hill - brettania