Panasonic LUMIX S 20mm F2.5 vs Sigma 20mm F2 DG | Contemporary (L-Mount)
Key differences
- —The LUMIX S 20mm F2.5 is 228g lighter (142g vs 370g).
- —The 20mm F2 DG | Contemporary (L-Mount) is faster: f/2 vs f/2.5 (≈0.6 stops more light).
- —At launch the LUMIX S 20mm F2.5 cost $201 less ($498 vs $699).
- —For close-ups the LUMIX S 20mm F2.5 reaches 0.15× vs 0.15×.
Which to choose
- LUMIX S 20mm F2.5
Choose it for:
- +The lightest option: 142g, 228g less than the next
- +Weather sealing
- +The lowest launch price: $498, $201 less
- +The fastest autofocus in reviews
- 20mm F2 DG | Contemporary (L-Mount)
Choose it for:
- +The brightest aperture: f/2, about 0.6 stop more light
- +A physical aperture ring
- +The sharpest results in reviews
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
- F2.5
- F2◆
- Weight
- 142g◆
- 370g
- Dimensions ⌀ × L
- 69.4 × 40.9mm
- 70.0 × 72.4mm
- Volume
- 155 cm³◆
- 279 cm³
- Density
- 0.92 g/cm³
- 1.33 g/cm³
- Filter thread
- ⌀62mm
- ⌀62mm
- Min focus
- 0.18m◆
- 0.22m
- Max magnification
- 0.15×◆
- 0.15×
- Elements / groups
- 11 / 9
- 13 / 11
- Aperture blades
- 7
- 9◆
- Focus drive
- Stepping Motor
- Stepping Motor
- Stabilisation
- —
- —
- Weather sealed
- Yes
- —
- Aperture ring
- —
- Yes
- Released
- 2026
- 2022
- MSRP (USD)
- $498◆
- $699
- Sharpness
- 7.6
- 8.3◆
- Bokeh Rendering
- 7.0
- 7.3◆
- Autofocus Speed
- 8.3◆
- 8.0
- Flare Resistance
- 6.4
- —
- Build / Sealing
- 8.2
- 8.7◆
- Value / Size
- 7.8
- 8.4◆
Performance overlay
- LUMIX S 20mm F2.5
- 20mm F2 DG | Contemporary (L-Mount)
◆ marks the best value in a row. Scores are 0–10 editorial ratings.