Sigma 18-50mm f/2.8 DC DN Contemporary vs Sony E PZ 10-20mm f/4 G
The bottom line
Similar coverage, different speed: the Sigma 18-50mm f/2.8 DC DN Contemporary opens to f/2.8 versus the Sony E PZ 10-20mm f/4 G's f/4 — more light and shallower background blur. The Sony E PZ 10-20mm f/4 G gives that up to stay lighter (143g (5.0 oz)). It comes down to how much you value that extra brightness.
Choose the Sigma 18-50mm f/2.8 DC DN Contemporary if…
- ✓You want more light and background blur — f/2.8 is faster than f/4, better for low light and subject separation.
- ✓You need more reach — it goes to 50mm vs 20mm for distant subjects, wildlife and sport.
- ✓You like close-focus work — 0.5x magnification vs 0.21x.
Choose the Sony E PZ 10-20mm f/4 G if…
- ✓You shoot wide — it starts at 10mm vs 18mm for landscapes, interiors and architecture.
- ✓You value portability — at 143g (5.0 oz) it's lighter than the 290g (10.2 oz) alternative for travel and all-day carry.
- ✓You use filters or shoot video — internal zoom keeps length and balance constant.
Where they differ
- ›Aperture: the Sigma 18-50mm f/2.8 DC DN Contemporary opens to f/2.8 vs the Sony E PZ 10-20mm f/4 G's f/4 — more light and shallower depth-of-field.
- ›Focal range: Sigma 18-50mm f/2.8 DC DN Contemporary is 18-50mm, Sony E PZ 10-20mm f/4 G is 10-20mm — different framing and reach.
- ›Close-up: the Sigma 18-50mm f/2.8 DC DN Contemporary reaches 0.5x magnification vs 0.21x — more for close-up and macro work.
- ›Weight: the Sony E PZ 10-20mm f/4 G is 143g (5.0 oz) vs 290g (10.2 oz) — you'll feel the difference handheld.
Frequently asked
Is the Sigma 18-50mm f/2.8 DC DN Contemporary or the Sony E PZ 10-20mm f/4 G better?
Similar coverage, different speed: the Sigma 18-50mm f/2.8 DC DN Contemporary opens to f/2.8 versus the Sony E PZ 10-20mm f/4 G's f/4 — more light and shallower background blur. The Sony E PZ 10-20mm f/4 G gives that up to stay lighter (143g (5.0 oz)). It comes down to how much you value that extra brightness.
Who should choose the Sigma 18-50mm f/2.8 DC DN Contemporary?
Choose the Sigma 18-50mm f/2.8 DC DN Contemporary if you want more light and background blur — f/2.8 is faster than f/4, better for low light and subject separation. Choose it if you need more reach — it goes to 50mm vs 20mm for distant subjects, wildlife and sport. Choose it if you like close-focus work — 0.5x magnification vs 0.21x.
Who should choose the Sony E PZ 10-20mm f/4 G?
Choose the Sony E PZ 10-20mm f/4 G if you shoot wide — it starts at 10mm vs 18mm for landscapes, interiors and architecture. Choose it if you value portability — at 143g (5.0 oz) it's lighter than the 290g (10.2 oz) alternative for travel and all-day carry. Choose it if you use filters or shoot video — internal zoom keeps length and balance constant.
What is the main difference between the Sigma 18-50mm f/2.8 DC DN Contemporary and the Sony E PZ 10-20mm f/4 G?
Aperture: the Sigma 18-50mm f/2.8 DC DN Contemporary opens to f/2.8 vs the Sony E PZ 10-20mm f/4 G's f/4 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 18-50mm | 10-20mm |
| Lens Type | Zoom | Zoom |
| Optical Elements | 13 | 9 |
| Optical Groups | 10 | 7 |
| Aperture & Iris | ||
| Maximum Aperture | f/2.8 | f/4 |
| Minimum Aperture | f/22 | f/22 |
| Aperture Blades | 9 | 7 |
| Rounded Aperture | Yes | Yes |
| Coverage & Angle | ||
| Format Coverage | APS-C | APS-C |
| Lens Mount | Sony E | Sony E |
| Angle of View | 76° – 32° | 110° – 71° |
| 35mm Equivalent | 27-75mm | 15-30mm |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | HLA | Linear |
| Focus Limiter | No | No |
| AF/MF Switch | Yes | No |
| Min Focus Distance | 13 cm | 15 cm |
| Max Magnification | 0.5x | 0.21x |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | Yes | No |
| Declickable Aperture | Yes | No |
| Parfocal | No | No |
| Internal Zoom | No | Yes |
| General | ||
| Price (MSRP) | $599 | $649 |
| Filter Size | 52mm | 55mm |
| Diameter | 65.4mm | 63mm |
| Length | 76.9mm | 46.9mm |
| Weight | 290g (10.2 oz) | 143g (5.0 oz) |
| Weather Sealed | Yes | Yes |
| Tripod Collar | No | No |
