Sigma 20mm F1.4 DG DN | Art (L-Mount) vs Viltrox AF 20mm F2.8 Air L (L-Mount)
Key differences
- —The AF 20mm F2.8 Air L (L-Mount) is 476g lighter (159g vs 635g).
- —The 20mm F1.4 DG DN | Art (L-Mount) is faster: f/1.4 vs f/2.8 (≈2.0 stops more light).
- —At launch the AF 20mm F2.8 Air L (L-Mount) cost $723 less ($176 vs $899).
- —For close-ups the AF 20mm F2.8 Air L (L-Mount) reaches 0.17× vs 0.16×.
Which to choose
- 20mm F1.4 DG DN | Art (L-Mount)
Choose it for:
- +The brightest aperture: f/1.4, about 2.0 stops more light
- +Weather sealing
- +A physical aperture ring
- AF 20mm F2.8 Air L (L-Mount)
Choose it for:
- +The lightest option: 159g, 476g less than the next
- +The lowest launch price: $176, $723 less
Computed from published specs, confirmed launch prices and, where every lens has at least two reviews, review scores.
- Mount
- L-Mount (FF)
- L-Mount (FF)
- Focal length
- 20mm
- 20mm
- Max aperture
- F1.4◆
- F2.8
- Weight
- 635g
- 159g◆
- Dimensions ⌀ × L
- 87.8 × 111.2mm
- 64.0 × 52.3mm
- Volume
- 673 cm³
- 168 cm³◆
- Density
- 0.94 g/cm³
- 0.95 g/cm³
- Filter thread
- ⌀82mm
- ⌀52mm
- Min focus
- 0.23m
- 0.19m◆
- Max magnification
- 0.16×
- 0.17×◆
- Elements / groups
- 17 / 15
- 10 / 8
- Aperture blades
- 11◆
- 7
- Focus drive
- Stepping Motor
- STM (Lead Screw)
- Stabilisation
- —
- —
- Weather sealed
- Yes
- —
- Aperture ring
- Yes · de-click
- —
- Released
- 2022
- 2026
- MSRP (USD)
- $899
- $176◆
- Sharpness
- 8.5◆
- 7.4
- Bokeh Rendering
- 8.0◆
- 6.2
- Autofocus Speed
- 8.4◆
- 7.3
- Flare Resistance
- 8.0◆
- 6.8
- Build / Sealing
- 8.9◆
- 7.2
- Value / Size
- 8.8
- 9.2◆
Performance overlay
- 20mm F1.4 DG DN | Art (L-Mount)
- AF 20mm F2.8 Air L (L-Mount)
◆ marks the best value in a row. Scores are 0–10 editorial ratings.