Samyang 50mm F1.4 AS UMC § 03 Head to head
Samyang 50mm F1.4 AS UMC vs Yongnuo YN 50 mm f/1.4
Samyang 50mm f/1.4 has a physical aperture ring. Yongnuo 50mm f/1.4 has a smaller filter thread.
Both lenses are made for the Canon EF mount: the Samyang 50mm F1.4 AS UMC is a 50mm f/1.4 prime, and the Yongnuo YN 50 mm f/1.4 is a 50mm f/1.4 prime. On paper they trade blows, with 2 advantages each.
Samyang 50mm F1.4 AS UMC 
Yongnuo YN 50 mm f/1.4 01
Key differences
Why is the Samyang 50mm F1.4 AS UMC better than the Yongnuo YN 50 mm f/1.4?
- Has a physical aperture ring
- More aperture blades (8 vs 7)
Why is the Yongnuo YN 50 mm f/1.4 better than the Samyang 50mm F1.4 AS UMC?
- Smaller filter thread (58 mm vs 77 mm)
- Newer design (2018 vs 2015)
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Specification
| Specification | Samyang 50mm F1.4 AS UMC | Yongnuo YN 50 mm f/1.4 |
|---|---|---|
| Focal length | 50mm | 50mm |
| Maximum aperture | f/1.4 | f/1.4 |
| Minimum aperture | f/22 | f/22 |
| Lens type | Standard prime lens | Prime lens |
| Format | Full Frame | Full frame |
| Weight | 575 g (1.27 lbs) | 572 g (20.18 oz) ◆ |
| Dimensions | 73.5 mm (diameter) x 81.6 mm (length) | 93 x 81 mm |
| Minimum focusing distance | 0.45 m (17.72 in) | 0.45 m (17.72 inches) |
| Maximum magnification | 0.17x | — |
| Image stabilization | No | No |
| Weather sealing | No | — |
| Aperture ring | Yes | No |
| Aperture blades | 8 ◆ | 7 |
| Optical construction | 9 elements in 6 groups | 9 elements / 7 groups |
| Filter size | 77 mm | 58 mm ◆ |
| Lens mount | Canon EF, Nikon F, Pentax K, Sony A, Sony E | Canon EF |
| Released | 2015 | 2018 |
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Size
- A · Samyang
- B · Yongnuo
- 81.6 × 73.5 mm
- 81 × 93 mm
The Samyang 50mm F1.4 AS UMC is 1 mm longer and 3 g heavier than the Yongnuo YN 50 mm f/1.4.
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Sample frames
Samyang 50mm F1.4 AS UMC
Yongnuo YN 50 mm f/1.4
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Video reviews
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Questions
- Which is lighter, the Samyang 50mm F1.4 AS UMC or the Yongnuo YN 50 mm f/1.4?
- The Yongnuo YN 50 mm f/1.4 weighs 572 g, 3 g less than the Samyang 50mm F1.4 AS UMC (575 g).
- Do the Samyang 50mm F1.4 AS UMC and the Yongnuo YN 50 mm f/1.4 have image stabilization?
- No, neither lens has optical image stabilization; rely on in-body stabilization if your camera has it.
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Other comparisons
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- Samyang 50mm F1.4 AS UMC vs Tokina Opera 50 mm f/1.4 FF
- Samyang 50mm F1.4 AS UMC vs Sony FE 50mm F1.4 GM
- Samyang 50mm F1.4 AS UMC vs Sony Planar T* FE 50mm F1.4 ZA
- Samyang 50mm F1.4 AS UMC vs Viltrox AF 50 mm f/1.4 Pro
- Carl Zeiss Otus ML 50 mm f/1.4 vs Samyang 50mm F1.4 AS UMC
- Samyang 50mm F1.4 AS UMC vs Sigma A 50 mm f/1.4 DG DN