Sigma 30mm f/1.4 DC DN Contemporary vs Sony FE 28-70mm f/3.5-5.6 OSS
The bottom line
The Sony FE 28-70mm f/3.5-5.6 OSS is a zoom (28-70mm) and the Sigma 30mm f/1.4 DC DN Contemporary is a 30mm prime. The zoom gives you framing flexibility from one lens; the prime trades that for a fixed focal length that's usually brighter (f/1.4 vs f/3.5) and lighter to carry. Choose flexibility or a fast single focal length.
Choose the Sigma 30mm f/1.4 DC DN Contemporary if…
- ✓You want more light and background blur — f/1.4 is faster than f/3.5, better for low light and subject separation.
- ✓You prefer a fast, compact single focal length — a 30mm prime over a zoom.
Choose the Sony FE 28-70mm f/3.5-5.6 OSS if…
- ✓You need more reach — it goes to 70mm vs 30mm for distant subjects, wildlife and sport.
- ✓You want one-lens flexibility — a 28-70mm zoom covers what the fixed 30mm can't reframe.
- ✓You shoot handheld or on an unstabilised body — it has optical stabilisation, the other doesn't.
- ✓You like close-focus work — 0.19x magnification vs 0.1x.
Where they differ
- ›Aperture: the Sigma 30mm f/1.4 DC DN Contemporary opens to f/1.4 vs the Sony FE 28-70mm f/3.5-5.6 OSS's f/3.5 — more light and shallower depth-of-field.
- ›Focal range: Sigma 30mm f/1.4 DC DN Contemporary is 30mm, Sony FE 28-70mm f/3.5-5.6 OSS is 28-70mm — different framing and reach.
- ›Type: the Sony FE 28-70mm f/3.5-5.6 OSS is a zoom (flexible framing), the Sigma 30mm f/1.4 DC DN Contemporary a prime (one focal length, usually brighter and lighter).
- ›Stabilisation: only the Sony FE 28-70mm f/3.5-5.6 OSS has optical stabilisation — steadier handheld shots, especially on bodies without IBIS.
Frequently asked
Is the Sigma 30mm f/1.4 DC DN Contemporary or the Sony FE 28-70mm f/3.5-5.6 OSS better?
The Sony FE 28-70mm f/3.5-5.6 OSS is a zoom (28-70mm) and the Sigma 30mm f/1.4 DC DN Contemporary is a 30mm prime. The zoom gives you framing flexibility from one lens; the prime trades that for a fixed focal length that's usually brighter (f/1.4 vs f/3.5) and lighter to carry. Choose flexibility or a fast single focal length.
Who should choose the Sigma 30mm f/1.4 DC DN Contemporary?
Choose the Sigma 30mm f/1.4 DC DN Contemporary if you want more light and background blur — f/1.4 is faster than f/3.5, better for low light and subject separation. Choose it if you prefer a fast, compact single focal length — a 30mm prime over a zoom.
Who should choose the Sony FE 28-70mm f/3.5-5.6 OSS?
Choose the Sony FE 28-70mm f/3.5-5.6 OSS if you need more reach — it goes to 70mm vs 30mm for distant subjects, wildlife and sport. Choose it if you want one-lens flexibility — a 28-70mm zoom covers what the fixed 30mm can't reframe. Choose it if you shoot handheld or on an unstabilised body — it has optical stabilisation, the other doesn't. Choose it if you like close-focus work — 0.19x magnification vs 0.1x.
What is the main difference between the Sigma 30mm f/1.4 DC DN Contemporary and the Sony FE 28-70mm f/3.5-5.6 OSS?
Aperture: the Sigma 30mm f/1.4 DC DN Contemporary opens to f/1.4 vs the Sony FE 28-70mm f/3.5-5.6 OSS's f/3.5 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 30mm | 28-70mm |
| Lens Type | Prime | Zoom |
| Optical Elements | 9 | 9 |
| Optical Groups | 6 | 7 |
| Aperture & Iris | ||
| Maximum Aperture | f/1.4 | f/3.5 |
| Minimum Aperture | f/16 | f/22 |
| Aperture Blades | 9 | 7 |
| Rounded Aperture | Yes | No |
| Coverage & Angle | ||
| Format Coverage | APS-C | Full-Frame |
| Lens Mount | Sony E | Sony E |
| Angle of View | 51° | 75° – 34° |
| 35mm Equivalent | 45-45mm | − |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | HLA | Stepping |
| Focus Limiter | No | No |
| AF/MF Switch | Yes | No |
| Min Focus Distance | 30 cm | 30 cm |
| Max Magnification | 0.1x | 0.19x |
| Stabilization & Video | ||
| Optical Stabilization | No | Yes |
| Aperture Ring | Yes | No |
| Declickable Aperture | Yes | No |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $349 | $299 |
| Filter Size | 52mm | 55mm |
| Diameter | 64.8mm | 72.5mm |
| Length | 51.5mm | 83mm |
| Weight | 265g (9.3 oz) | 295g (10.4 oz) |
| Weather Sealed | No | No |
| Tripod Collar | No | No |
