Samyang 50mm F1.2 AS UMC CS § 03 Head to head
Samyang 50mm F1.2 AS UMC CS vs Sigma A 50 mm f/1.2 DG DN
Samyang 50mm f/1.2 is 370 g lighter. Sigma 50mm f/1.2 focuses 10 cm closer.
Both lenses are made for the Sony E mount: the Samyang 50mm F1.2 AS UMC CS is a 50mm f/1.2 prime, and the Sigma A 50 mm f/1.2 DG DN is a 50mm f/1.2 prime. On paper they trade blows, with 4 advantages each.
Samyang 50mm F1.2 AS UMC CS 
Sigma A 50 mm f/1.2 DG DN 01
Key differences
Why is the Samyang 50mm F1.2 AS UMC CS better than the Sigma A 50 mm f/1.2 DG DN?
- 370 g lighter (375 g vs 745 g)
- 35 mm shorter (74 mm vs 108.8 mm long)
- Has a physical aperture ring
- Smaller filter thread (62 mm vs 72 mm)
Why is the Sigma A 50 mm f/1.2 DG DN better than the Samyang 50mm F1.2 AS UMC CS?
- Focuses 10 cm closer (0.4 m vs 0.5 m)
- More aperture blades (13 vs 9)
- Covers a larger sensor format (full-frame vs APS-C)
- Newer design (2024 vs 2017)
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Which should you buy?
- portrait For portrait photography, the Samyang 50mm F1.2 AS UMC CS has the edge: it is 370 g lighter to carry.
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Specification
| Specification | Samyang 50mm F1.2 AS UMC CS | Sigma A 50 mm f/1.2 DG DN |
|---|---|---|
| Focal length | 50mm | 50mm |
| Maximum aperture | f/1.2 | f/1.2 |
| Minimum aperture | f/16 | f/16 |
| Lens type | Standard prime lens | Prime lens |
| Format | APS-C | Full frame |
| Weight | 375 g (0.83 lbs) ◆ | 745 g |
| Dimensions | 74 mm (diameter) x 74 mm (length) | 108.8 x 81 mm |
| Minimum focusing distance | 0.5 m (19.7 in) | 0.4 m ◆ |
| Maximum magnification | 0.17x | — |
| Image stabilization | No | No |
| Weather sealing | No | — |
| Aperture ring | Yes | No |
| Aperture blades | 9 | 13 ◆ |
| Optical construction | 9 elements in 7 groups | 17 elements / 12 groups |
| Filter size | 62 mm ◆ | 72 mm |
| Lens mount | Canon EF-M, Fujifilm X, Micro Four Thirds, Sony E | Sony E, L-Mount |
| Released | 2017 | 2024 |
| Price | — | $1,399 launch price |
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Size
- A · Samyang
- B · Sigma
- 74 × 74 mm
- 108.8 × 81 mm
The Sigma A 50 mm f/1.2 DG DN is 35 mm longer and 370 g heavier than the Samyang 50mm F1.2 AS UMC CS.
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Sample frames
Samyang 50mm F1.2 AS UMC CS
Sigma A 50 mm f/1.2 DG DN
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Video reviews
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Questions
- Which is lighter, the Samyang 50mm F1.2 AS UMC CS or the Sigma A 50 mm f/1.2 DG DN?
- The Samyang 50mm F1.2 AS UMC CS weighs 375 g, 370 g less than the Sigma A 50 mm f/1.2 DG DN (745 g).
- Which focuses closer, the Samyang 50mm F1.2 AS UMC CS or the Sigma A 50 mm f/1.2 DG DN?
- The Sigma A 50 mm f/1.2 DG DN focuses down to 0.4 m, against 0.5 m for the Samyang 50mm F1.2 AS UMC CS.
- Do the Samyang 50mm F1.2 AS UMC CS and the Sigma A 50 mm f/1.2 DG DN have image stabilization?
- No, neither lens has optical image stabilization; rely on in-body stabilization if your camera has it.
- Is the Samyang 50mm F1.2 AS UMC CS or the Sigma A 50 mm f/1.2 DG DN better for portrait photography?
- For portrait photography, the Samyang 50mm F1.2 AS UMC CS has the edge: it is 370 g lighter to carry.
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