Laowa Aksen 17.5mm f/1.7 5-10X Ultra Macro APO (L-Mount) vs Sigma 17mm F4 DG | Contemporary (L-Mount)
Key differences
- —The 17mm F4 DG | Contemporary (L-Mount) is 345g lighter (225g vs 570g).
- —The Aksen 17.5mm f/1.7 5-10X Ultra Macro APO (L-Mount) is faster: f/1.7 vs f/4 (≈2.5 stops more light).
- —The Aksen 17.5mm f/1.7 5-10X Ultra Macro APO (L-Mount) is manual focus only.
- —For close-ups the Aksen 17.5mm f/1.7 5-10X Ultra Macro APO (L-Mount) reaches 10.00× vs 0.28×.
Which to choose
- Aksen 17.5mm f/1.7 5-10X Ultra Macro APO (L-Mount)
Choose it for:
- +The brightest aperture: f/1.7, about 2.5 stops more light
- +The longest reach: up to 17.5mm
- +The best close-ups: 10.00× magnification
- +The sharpest results in reviews
- 17mm F4 DG | Contemporary (L-Mount)
Choose it for:
- +The lightest option: 225g, 345g less than the next
- +The widest view: starts at 17mm
- +Autofocus
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
- 17.5mm
- 17mm
- Max aperture
- F1.7◆
- F4
- Weight
- 570g
- 225g◆
- Dimensions ⌀ × L
- 70.2 × 127.5mm
- 64.0 × 48.8mm
- Volume
- 493 cm³
- 157 cm³◆
- Density
- 1.16 g/cm³
- 1.43 g/cm³
- Filter thread
- —
- ⌀55mm
- Min focus
- 0.17m
- 0.12m◆
- Max magnification
- 10.00×◆
- 0.28×
- Elements / groups
- 17 / 12
- 9 / 8
- Aperture blades
- 11◆
- 7
- Focus drive
- Manual Helicoid
- Stepping Motor
- Stabilisation
- —
- —
- Weather sealed
- —
- —
- Aperture ring
- Yes
- Yes
- Released
- 2026
- 2023
- MSRP (USD)
- $749
- Unconfirmed
- Sharpness
- 9.0◆
- 8.5
- Bokeh Rendering
- —
- 6.3
- Autofocus Speed
- MF
- 7.8
- Flare Resistance
- —
- —
- Build / Sealing
- 8.8◆
- 8.7
- Value / Size
- 8.5◆
- 8.3
Performance overlay
- Aksen 17.5mm f/1.7 5-10X Ultra Macro APO (L-Mount)
- 17mm F4 DG | Contemporary (L-Mount)
◆ marks the best value in a row. Scores are 0–10 editorial ratings.