Samyang 20mm F1.8 ED AS UMC vs Sigma 20mm F1.4 DG DN | Art
Key differences
- —The 20mm F1.8 ED AS UMC is 105g lighter (525g vs 630g).
- —The 20mm F1.4 DG DN | Art is faster: f/1.4 vs f/1.8 (≈0.7 stops more light).
- —At launch the 20mm F1.8 ED AS UMC cost $300 less ($599 vs $899).
- —The 20mm F1.8 ED AS UMC is manual focus only.
- —For close-ups the 20mm F1.4 DG DN | Art reaches 0.16× vs 0.15×.
- Mount
- Sony E (FE)
- Sony E (FE)
- Focal length
- 20mm
- 20mm
- Max aperture
- F1.8
- F1.4◆
- Weight
- 525g◆
- 630g
- Dimensions ⌀ × L
- 83.0 × 114.4mm
- 87.8 × 113.2mm
- Volume
- 619 cm³◆
- 685 cm³
- Density
- 0.85 g/cm³
- 0.92 g/cm³
- Filter thread
- ⌀77mm
- ⌀82mm
- Min focus
- 0.20m◆
- 0.23m
- Max magnification
- 0.15×
- 0.16×◆
- Elements / groups
- 13 / 12
- 17 / 15
- Aperture blades
- 7
- 11◆
- Focus drive
- Manual Helicoid
- Stepping Motor
- Stabilisation
- —
- —
- Weather sealed
- —
- Yes
- Aperture ring
- Yes
- Yes · de-click
- Released
- 2016
- 2022
- MSRP (USD)
- $599◆
- $899
- Sharpness
- 7.6
- 8.6◆
- Bokeh Rendering
- 7.4
- 8.0◆
- Autofocus Speed
- MF
- 8.2
- Flare Resistance
- 7.0
- 8.0◆
- Build / Sealing
- 7.2
- 8.8◆
- Value / Size
- 8.2
- 8.9◆
Performance overlay
- 20mm F1.8 ED AS UMC
- 20mm F1.4 DG DN | Art
◆ marks the best value in a row. Scores are 0–10 editorial ratings.