Samyang 50mm F1.4 AS UMC vs Sigma 50mm F1.4 CL DG | Contemporary
The Sigma is 190g lighter, has autofocus and is weather sealed.
Key differences
- The Sigma is 190g lighter (375g vs 565g).
- The Samyang is manual focus only.
- For close-ups the Sigma reaches 0.15× vs 0.13×.
Which to choose
- 50mm F1.4 AS UMC
No clear advantage on paper. Compare handling and the full specs below.
- 50mm F1.4 CL DG | Contemporary
Choose it for:
- +The lightest option: 375g, 190g less than the next
- +Autofocus
- +Weather sealing
Computed from published specs, confirmed launch prices and, where every lens has at least two reviews, review scores.
Samyang/Rokinon
50mm F1.4 AS UMC
- Mount
- Sony E (FE)
- Sony E (FE)
- Focal length
- 50mm
- 50mm
- Max aperture
- F1.4
- F1.4
- Weight
- 565g
- 375g◆
- Dimensions ⌀ × L
- 81.6 × 100.7mm
- 64.7 × 56.0mm
- Volume
- 527 cm³
- 184 cm³◆
- Density
- 1.07 g/cm³
- 2.04 g/cm³
- Filter thread
- ⌀77mm
- ⌀52mm
- Min focus
- 0.45m
- 0.45m
- Max magnification
- ≈0.13×
- 0.15×◆
- Elements / groups
- 9 / 6
- 9 / 6
- Aperture blades
- 8
- 14◆
- Focus drive
- Manual Helicoid
- RDD (Rotary Direct Drive)
- Stabilisation
- —
- —
- Weather sealed
- —
- Yes
- Aperture ring
- Yes
- Yes
- Released
- 2014
- 2026
- MSRP (USD)
- Unconfirmed
- Unconfirmed
- Sharpness
- 7.6
- —
- Bokeh Rendering
- —
- —
- Autofocus Speed
- MF
- —
- Flare Resistance
- 6.0
- —
- Build / Sealing
- 7.3
- —
- Value / Size
- 7.8
- —
Performance overlay
- 50mm F1.4 AS UMC
- 50mm F1.4 CL DG | Contemporary
◆ marks the best value in a row. Scores are 0–10 editorial ratings.