7Artisans AF 50mm F1.8 (L-Mount) vs Sigma 50mm F1.4 DG DN | Art (L-Mount)
Key differences
- —The AF 50mm F1.8 (L-Mount) is 249g lighter (421g vs 670g).
- —The 50mm F1.4 DG DN | Art (L-Mount) is faster: f/1.4 vs f/1.8 (≈0.7 stops more light).
- —At launch the AF 50mm F1.8 (L-Mount) cost $621 less ($228 vs $849).
- —For close-ups the 50mm F1.4 DG DN | Art (L-Mount) reaches 0.15× vs 0.13×.
Which to choose
- AF 50mm F1.8 (L-Mount)
Choose it for:
- +The lightest option: 421g, 249g less than the next
- +The lowest launch price: $228, $621 less
- 50mm F1.4 DG DN | Art (L-Mount)
Choose it for:
- +The brightest aperture: f/1.4, about 0.7 stop more light
- +Weather sealing
- +The sharpest results in reviews
- +The nicest background blur in reviews
- +The fastest autofocus 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
- 50mm
- 50mm
- Max aperture
- F1.8
- F1.4◆
- Weight
- 421g◆
- 670g
- Dimensions ⌀ × L
- 72.0 × 104.0mm
- 78.2 × 109.5mm
- Volume
- 423 cm³◆
- 526 cm³
- Density
- 0.99 g/cm³
- 1.27 g/cm³
- Filter thread
- ⌀62mm
- ⌀72mm
- Min focus
- 0.50m
- 0.45m◆
- Max magnification
- 0.13×
- 0.15×◆
- Elements / groups
- 11 / 9
- 14 / 11
- Aperture blades
- 11
- 11
- Focus drive
- STM
- HLA Linear Motor
- Stabilisation
- —
- —
- Weather sealed
- —
- Yes
- Aperture ring
- Yes · de-click
- Yes · de-click
- Released
- 2025
- 2023
- MSRP (USD)
- $228◆
- $849
- Sharpness
- 7.8
- 9.2◆
- Bokeh Rendering
- 7.8
- 8.8◆
- Autofocus Speed
- 7.3
- 8.6◆
- Flare Resistance
- 6.8
- 8.6◆
- Build / Sealing
- 7.8
- 8.9◆
- Value / Size
- 8.5
- 8.8◆
Performance overlay
- AF 50mm F1.8 (L-Mount)
- 50mm F1.4 DG DN | Art (L-Mount)
◆ marks the best value in a row. Scores are 0–10 editorial ratings.