Sirui Swift 40mm F2.2 vs Sony FE 40mm F2.5 G
The Sirui is brighter (f/2.2 vs f/2.5) and cost $451 less at launch. The Sony focuses closer (0.23×).
Key differences
- The Sony is 37g lighter (173g vs 210g).
- The Sirui is faster: f/2.2 vs f/2.5 (≈0.4 stops more light).
- At launch the Sirui cost $451 less ($149 vs $600).
- For close-ups the Sony reaches 0.23× vs 0.14×.
Which to choose
- Swift 40mm F2.2
Choose it for:
- +The brightest aperture: f/2.2, about 0.4 stop more light
- +The lowest launch price: $149, $451 less
- FE 40mm F2.5 G
Choose it for:
- +The best close-ups: 0.23× magnification
Computed from published specs, confirmed launch prices and, where every lens has at least two reviews, review scores.
Sirui
Swift 40mm F2.2
Sony
FE 40mm F2.5 G
- Mount
- Sony E (FE)
- Sony E (FE)
- Focal length
- 40mm
- 40mm
- Max aperture
- F2.2◆
- F2.5
- Weight
- 210g
- 173g◆
- Dimensions ⌀ × L
- 69.5 × 62.3mm
- 68.0 × 45.0mm
- Volume
- 236 cm³
- 163 cm³◆
- Density
- 0.89 g/cm³
- 1.06 g/cm³
- Filter thread
- ⌀58mm
- ⌀49mm
- Min focus
- 0.40m
- 0.25m◆
- Max magnification
- 0.14×
- 0.23×◆
- Elements / groups
- 11 / 8
- 9 / 9
- Aperture blades
- 9◆
- 7
- Focus drive
- STM
- Linear Motor (x2)
- Stabilisation
- —
- —
- Weather sealed
- Yes
- Yes
- Aperture ring
- Yes
- Yes · de-click
- Released
- 2026
- 2021
- MSRP (USD)
- $149◆
- $600
- Sharpness
- —
- 8.7
- Bokeh Rendering
- —
- 7.1
- Autofocus Speed
- —
- 8.8
- Flare Resistance
- —
- 7.5
- Build / Sealing
- —
- 9.0
- Value / Size
- —
- 7.8
Performance overlay
- Swift 40mm F2.2
- FE 40mm F2.5 G
◆ marks the best value in a row. Scores are 0–10 editorial ratings.