Sony FE 40mm f/2.5 G vs Sony Vario-Tessar T* E 16-70mm f/4 ZA OSS
The bottom line
The Sony Vario-Tessar T* E 16-70mm f/4 ZA OSS is a zoom (16-70mm) and the Sony FE 40mm f/2.5 G is a 40mm prime. The zoom gives you framing flexibility from one lens; the prime trades that for a fixed focal length that's usually brighter (f/2.5 vs f/4) and lighter to carry. Choose flexibility or a fast single focal length.
Choose the Sony FE 40mm f/2.5 G if…
- ✓You want more light and background blur — f/2.5 is faster than f/4, better for low light and subject separation.
- ✓You prefer a fast, compact single focal length — a 40mm prime over a zoom.
- ✓You value portability — at 173g (6.1 oz) it's lighter than the 308g (10.9 oz) alternative for travel and all-day carry.
- ✓You work outdoors — it's weather-sealed against dust and moisture; the other isn't.
Choose the Sony Vario-Tessar T* E 16-70mm f/4 ZA OSS if…
- ✓You need more reach — it goes to 70mm vs 40mm for distant subjects, wildlife and sport.
- ✓You shoot wide — it starts at 16mm vs 40mm for landscapes, interiors and architecture.
- ✓You want one-lens flexibility — a 16-70mm zoom covers what the fixed 40mm can't reframe.
- ✓You shoot handheld or on an unstabilised body — it has optical stabilisation, the other doesn't.
Where they differ
- ›Aperture: the Sony FE 40mm f/2.5 G opens to f/2.5 vs the Sony Vario-Tessar T* E 16-70mm f/4 ZA OSS's f/4 — more light and shallower depth-of-field.
- ›Focal range: Sony FE 40mm f/2.5 G is 40mm, Sony Vario-Tessar T* E 16-70mm f/4 ZA OSS is 16-70mm — different framing and reach.
- ›Type: the Sony Vario-Tessar T* E 16-70mm f/4 ZA OSS is a zoom (flexible framing), the Sony FE 40mm f/2.5 G a prime (one focal length, usually brighter and lighter).
- ›Stabilisation: only the Sony Vario-Tessar T* E 16-70mm f/4 ZA OSS has optical stabilisation — steadier handheld shots, especially on bodies without IBIS.
- ›Weight: the Sony FE 40mm f/2.5 G is 173g (6.1 oz) vs 308g (10.9 oz) — you'll feel the difference handheld.
- ›Durability: the Sony FE 40mm f/2.5 G is weather-sealed; the other isn't.
Frequently asked
Is the Sony FE 40mm f/2.5 G or the Sony Vario-Tessar T* E 16-70mm f/4 ZA OSS better?
The Sony Vario-Tessar T* E 16-70mm f/4 ZA OSS is a zoom (16-70mm) and the Sony FE 40mm f/2.5 G is a 40mm prime. The zoom gives you framing flexibility from one lens; the prime trades that for a fixed focal length that's usually brighter (f/2.5 vs f/4) and lighter to carry. Choose flexibility or a fast single focal length.
Who should choose the Sony FE 40mm f/2.5 G?
Choose the Sony FE 40mm f/2.5 G if you want more light and background blur — f/2.5 is faster than f/4, better for low light and subject separation. Choose it if you prefer a fast, compact single focal length — a 40mm prime over a zoom. Choose it if you value portability — at 173g (6.1 oz) it's lighter than the 308g (10.9 oz) alternative for travel and all-day carry. Choose it if you work outdoors — it's weather-sealed against dust and moisture; the other isn't.
Who should choose the Sony Vario-Tessar T* E 16-70mm f/4 ZA OSS?
Choose the Sony Vario-Tessar T* E 16-70mm f/4 ZA OSS if you need more reach — it goes to 70mm vs 40mm for distant subjects, wildlife and sport. Choose it if you shoot wide — it starts at 16mm vs 40mm for landscapes, interiors and architecture. Choose it if you want one-lens flexibility — a 16-70mm zoom covers what the fixed 40mm can't reframe. Choose it if you shoot handheld or on an unstabilised body — it has optical stabilisation, the other doesn't.
What is the main difference between the Sony FE 40mm f/2.5 G and the Sony Vario-Tessar T* E 16-70mm f/4 ZA OSS?
Aperture: the Sony FE 40mm f/2.5 G opens to f/2.5 vs the Sony Vario-Tessar T* E 16-70mm f/4 ZA OSS's f/4 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 40mm | 16-70mm |
| Lens Type | Prime | Zoom |
| Optical Elements | 8 | 12 |
| Optical Groups | 7 | 9 |
| Aperture & Iris | ||
| Maximum Aperture | f/2.5 | f/4 |
| Minimum Aperture | f/22 | f/22 |
| Aperture Blades | 9 | 7 |
| Rounded Aperture | Yes | No |
| Coverage & Angle | ||
| Format Coverage | Full-Frame | APS-C |
| Lens Mount | Sony E | Sony E |
| Angle of View | 57° | 83° – 23° |
| 35mm Equivalent | − | 24-105mm |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | XD Linear | DDSSM |
| Focus Limiter | No | No |
| AF/MF Switch | Yes | No |
| Min Focus Distance | 25 cm | 35 cm |
| Max Magnification | 0.23x | 0.23x |
| Stabilization & Video | ||
| Optical Stabilization | No | Yes |
| Aperture Ring | Yes | No |
| Declickable Aperture | Yes | No |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $599 | $649 |
| Filter Size | 49mm | 55mm |
| Diameter | 68mm | 66.6mm |
| Length | 45.5mm | 75mm |
| Weight | 173g (6.1 oz) | 308g (10.9 oz) |
| Weather Sealed | Yes | No |
| Tripod Collar | No | No |
