Sigma 10-18mm f/2.8 DC DN Contemporary vs Sony E 10-18mm f/4 OSS
The bottom line
Similar coverage, different speed: the Sigma 10-18mm f/2.8 DC DN Contemporary opens to f/2.8 versus the Sony E 10-18mm f/4 OSS's f/4 — more light and shallower background blur. The Sony E 10-18mm f/4 OSS gives that up to stay lighter (225g (7.9 oz)). It comes down to how much you value that extra brightness.
Choose the Sigma 10-18mm 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 like close-focus work — 0.28x magnification vs 0.1x.
- ✓You work outdoors — it's weather-sealed against dust and moisture; the other isn't.
Choose the Sony E 10-18mm f/4 OSS if…
- ✓You shoot handheld or on an unstabilised body — it has optical stabilisation, the other doesn't.
Where they differ
- ›Aperture: the Sigma 10-18mm f/2.8 DC DN Contemporary opens to f/2.8 vs the Sony E 10-18mm f/4 OSS's f/4 — more light and shallower depth-of-field.
- ›Stabilisation: only the Sony E 10-18mm f/4 OSS has optical stabilisation — steadier handheld shots, especially on bodies without IBIS.
- ›Durability: the Sigma 10-18mm f/2.8 DC DN Contemporary is weather-sealed; the other isn't.
Frequently asked
Is the Sigma 10-18mm f/2.8 DC DN Contemporary or the Sony E 10-18mm f/4 OSS better?
Similar coverage, different speed: the Sigma 10-18mm f/2.8 DC DN Contemporary opens to f/2.8 versus the Sony E 10-18mm f/4 OSS's f/4 — more light and shallower background blur. The Sony E 10-18mm f/4 OSS gives that up to stay lighter (225g (7.9 oz)). It comes down to how much you value that extra brightness.
Who should choose the Sigma 10-18mm f/2.8 DC DN Contemporary?
Choose the Sigma 10-18mm 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 like close-focus work — 0.28x magnification vs 0.1x. Choose it if you work outdoors — it's weather-sealed against dust and moisture; the other isn't.
Who should choose the Sony E 10-18mm f/4 OSS?
Choose the Sony E 10-18mm f/4 OSS if you shoot handheld or on an unstabilised body — it has optical stabilisation, the other doesn't.
What is the main difference between the Sigma 10-18mm f/2.8 DC DN Contemporary and the Sony E 10-18mm f/4 OSS?
Aperture: the Sigma 10-18mm f/2.8 DC DN Contemporary opens to f/2.8 vs the Sony E 10-18mm f/4 OSS's f/4 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 10-18mm | 10-18mm |
| Lens Type | Zoom | Zoom |
| Optical Elements | 13 | 12 |
| Optical Groups | 10 | 11 |
| Aperture & Iris | ||
| Maximum Aperture | f/2.8 | f/4 |
| Minimum Aperture | f/22 | f/22 |
| Aperture Blades | 9 | 7 |
| Rounded Aperture | Yes | No |
| Coverage & Angle | ||
| Format Coverage | APS-C | APS-C |
| Lens Mount | Sony E | Sony E |
| Angle of View | 110° – 76° | 110° – 76° |
| 35mm Equivalent | 15-27mm | 15-27mm |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | HLA | Stepping |
| Focus Limiter | No | No |
| AF/MF Switch | Yes | No |
| Min Focus Distance | 12 cm | 25 cm |
| Max Magnification | 0.28x | 0.1x |
| Stabilization & Video | ||
| Optical Stabilization | No | Yes |
| Aperture Ring | Yes | No |
| Declickable Aperture | Yes | No |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $699 | $749 |
| Filter Size | 67mm | 62mm |
| Diameter | 67.2mm | 70.8mm |
| Length | 73.3mm | 63.8mm |
| Weight | 260g (9.2 oz) | 225g (7.9 oz) |
| Weather Sealed | Yes | No |
| Tripod Collar | No | No |
