7Artisans 18mm F5.6 (L-Mount) vs Sigma 17mm F4 DG | Contemporary (L-Mount)
Key differences
- —The 18mm F5.6 (L-Mount) is 79g lighter (146g vs 225g).
- —The 17mm F4 DG | Contemporary (L-Mount) is faster: f/4 vs f/5.6 (≈1.0 stops more light).
- —The 18mm F5.6 (L-Mount) is manual focus only.
- —For close-ups the 17mm F4 DG | Contemporary (L-Mount) reaches 0.28× vs 0.07×.
Which to choose
- 18mm F5.6 (L-Mount)
Choose it for:
- +The longest reach: up to 18mm
- 17mm F4 DG | Contemporary (L-Mount)
Choose it for:
- +The brightest aperture: f/4, about 1.0 stop more light
- +The widest view: starts at 17mm
- +Autofocus
- +A physical aperture ring
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
- 18mm
- 17mm
- Max aperture
- F5.6
- F4◆
- Weight
- ≈146g◆
- 225g
- Dimensions ⌀ × L
- 61.0 × 32.0mm
- 64.0 × 48.8mm
- Volume
- 94 cm³◆
- 157 cm³
- Density
- 1.56 g/cm³
- 1.43 g/cm³
- Filter thread
- ⌀49mm
- ⌀55mm
- Min focus
- 0.30m
- 0.12m◆
- Max magnification
- ≈0.07×
- 0.28×◆
- Elements / groups
- 7 / 5
- 9 / 8
- Aperture blades
- Not published
- 7
- Focus drive
- Manual Helicoid
- Stepping Motor
- Stabilisation
- —
- —
- Weather sealed
- —
- —
- Aperture ring
- —
- Yes
- Released
- 2025
- 2023
- MSRP (USD)
- $89
- Unconfirmed
- Sharpness
- 6.5
- 8.5◆
- Bokeh Rendering
- 4.5
- 6.3◆
- Autofocus Speed
- MF
- 7.8
- Flare Resistance
- 5.5
- —
- Build / Sealing
- 7.5
- 8.7◆
- Value / Size
- 7.5
- 8.3◆
Performance overlay
- 18mm F5.6 (L-Mount)
- 17mm F4 DG | Contemporary (L-Mount)
◆ marks the best value in a row. Scores are 0–10 editorial ratings.