Sigma Contemporary 28-70mm f/2.8 DG DN
Sigma
94 Overall Score
vs
TTArtisan AF 40mm f/2 40mm
TTArtisan
45 Overall Score
What Buyers Say
Sigma Contemporary 28-70mm f/2.8 DG DN
No customer feedback yet
TTArtisan AF 40mm f/2 40mm
60 out of 100 low confidence 7 reviews
The TTArtisan 40mm f/2.0 pancake lens receives mixed feedback from users. While many praise its compact metal build, satisfying aperture ring, and excellent value for the price, significant issues with autofocus performance—including hunting, pulsing, and noise—are frequently mentioned. Image quality is generally good, but users note heavy vignetting and flare when shooting into strong light. Overall, it is seen as a budget-friendly option with trade-offs in AF reliability.
Pros
- Compact metal build
- Satisfying aperture ring
- Excellent value for money
- Good image quality
- Fast f/2.0 aperture for low light
Cons
- Poor autofocus performance
- Loud autofocus motor
- Heavy vignetting
- Flare when shooting into light
- Occasional misconnection with camera
Autofocus performance 5
Build quality 4
Value for money 4
Image quality 4
Vignetting 2
Flare 2
Scores
Macro
Professional
Portrait
Budget
Street
Video Cinema
Landscape
Travel
Wildlife Sports
Specifications
| Sigma Contemporary 28-70mm f/2.8 DG DN | TTArtisan AF 40mm f/2 40mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 28 mm | 40 mm |
| Focal Length Max | 70 mm | 40 mm |
| Elements | 16 | 9 |
| Groups | 12 | 6 |
| Aspherical Elements | 3★ | — |
| ED Elements | 4★ | — |
| Coating | Super Multi-Layer Coating and Nano Porous Coating | — |
| Aperture | ||
| Max Aperture | f/2.8 | f/16 |
| Min Aperture | f/2.8 | f/2 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 9★ | 7 |
| Build | ||
| Mount | Sony E | Nikon Z |
| Format | full-frame | full-frame |
| Weather Sealed | ✓★ | — |
| Weight | 0.47 kg | 0.18 kg★ |
| Filter Thread | 67 mm | 52 mm |
| AF & Stabilization | ||
| AF Type | stepping motor | STM Stepping AF Motor★ |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 190 mm★ | 400 mm |
| Max Magnification | 3.3 to 4.6 x★ | — |
Pros & Cons
Sigma Contemporary 28-70mm f/2.8 DG DN
- Strong optical (95th percentile)95th %ile
- Strong macro (95th percentile)95th %ile
- Strong bokeh (91st percentile)91st %ile
- Strong aperture (88th percentile)88th %ile
- Below average stabilization (34th percentile)
TTArtisan AF 40mm f/2 40mm
- Strong build (87th percentile)87th %ile
- Strong af (85th percentile)85th %ile
- Below average user sentiment (5th percentile)5th %ile
- Below average bokeh (31st percentile)
- Below average optical (32nd percentile)
- Below average versatility (33rd percentile)
Pricing
Sigma Contemporary 28-70mm f/2.8 DG DN0.122score per dollar
vs
TTArtisan AF 40mm f/2 40mm0.290score per dollar
TTArtisan AF 40mm f/2 40mm offers 2.4x better value for money
Verdict
Winner: Sigma Contemporary 28-70mm f/2.8 DG DN
Scores 94 overall, wins 9 of 9 usage categories and 6 of 21 specs.
