Sigma Contemporary 18-50mm f/2.8 DC DN
Sigma
98 Overall Score
vs
Opteka OPTM3517O 35mm
Opteka
48 Overall Score
Scores
Travel
Street
Budget
Professional
Macro
Video Cinema
Portrait
Landscape
Wildlife Sports
Specifications
| Sigma Contemporary 18-50mm f/2.8 DC DN | Opteka OPTM3517O 35mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 18 mm | 35 mm |
| Focal Length Max | 50 mm | 35 mm |
| Elements | 13 | 6 |
| Groups | 10 | 5 |
| Aspherical Elements | 3★ | 1 |
| ED Elements | 1 | 1 |
| Coating | Super Multi-Layer Coating | HD Anti-Reflection |
| Aperture | ||
| Max Aperture | f/2.8 | f/1.7 |
| Min Aperture | f/2.8 | f/1.7 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | 7 | 9★ |
| Build | ||
| Mount | Sony E | Micro Four Thirds |
| Format | APS-C★ | micro-four-thirds |
| Weather Sealed | ✓★ | — |
| Weight | 0.29 kg | 0.20 kg★ |
| Filter Thread | 55 mm | 49 mm |
| AF & Stabilization | ||
| AF Type | stepping motor★ | manual focus only |
| Stabilization | ✗ | ✗ |
| Focus | ||
| Min Focus Distance | 121 mm★ | 300 mm |
| Max Magnification | 1:2.8★ | — |
Pros & Cons
Sigma Contemporary 18-50mm f/2.8 DC DN
- Strong macro (92nd percentile)92nd %ile
- Strong social proof (90th percentile)90th %ile
- Strong af (87th percentile)87th %ile
- Strong build (86th percentile)86th %ile
Opteka OPTM3517O 35mm
- Strong bokeh (95th percentile)95th %ile
- Strong aperture (94th percentile)94th %ile
- Strong build (85th percentile)85th %ile
- Strong macro (71st percentile)
- Below average af (13th percentile)13th %ile
- Below average social proof (29th percentile)
- Below average versatility (34th percentile)
Pricing
Sigma Contemporary 18-50mm f/2.8 DC DN0.172score per dollar
vs
Opteka OPTM3517O 35mm0.537score per dollar
Opteka OPTM3517O 35mm offers 3.1x better value for money
Verdict
Winner: Sigma Contemporary 18-50mm f/2.8 DC DN
Scores 98 overall, wins 9 of 9 usage categories and 6 of 21 specs.
