Sony FE 85mm f/1.8 vs Tamron 50-300mm f/4.5-6.3 Di III VC VXD
The bottom line
The Tamron 50-300mm f/4.5-6.3 Di III VC VXD is a zoom (50-300mm) and the Sony FE 85mm f/1.8 is an 85mm prime. The zoom gives you framing flexibility from one lens; the prime trades that for a fixed focal length that's usually brighter (f/1.8 vs f/4.5) and lighter to carry. Choose flexibility or a fast single focal length.
Choose the Sony FE 85mm f/1.8 if…
- ✓You want more light and background blur — f/1.8 is faster than f/4.5, better for low light and subject separation.
- ✓You prefer a fast, compact single focal length — an 85mm prime over a zoom.
- ✓You value portability — at 371g (13.1 oz) it's lighter than the 620g (1.37 lb) alternative for travel and all-day carry.
Choose the Tamron 50-300mm f/4.5-6.3 Di III VC VXD if…
- ✓You need more reach — it goes to 300mm vs 85mm for distant subjects, wildlife and sport.
- ✓You shoot wide — it starts at 50mm vs 85mm for landscapes, interiors and architecture.
- ✓You want one-lens flexibility — a 50-300mm zoom covers what the fixed 85mm 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 85mm f/1.8 opens to f/1.8 vs the Tamron 50-300mm f/4.5-6.3 Di III VC VXD's f/4.5 — more light and shallower depth-of-field.
- ›Focal range: Sony FE 85mm f/1.8 is 85mm, Tamron 50-300mm f/4.5-6.3 Di III VC VXD is 50-300mm — different framing and reach.
- ›Type: the Tamron 50-300mm f/4.5-6.3 Di III VC VXD is a zoom (flexible framing), the Sony FE 85mm f/1.8 a prime (one focal length, usually brighter and lighter).
- ›Price: the Sony FE 85mm f/1.8 is $599, $100 under the Tamron 50-300mm f/4.5-6.3 Di III VC VXD.
- ›Stabilisation: only the Tamron 50-300mm f/4.5-6.3 Di III VC VXD has optical stabilisation — steadier handheld shots, especially on bodies without IBIS.
- ›Weight: the Sony FE 85mm f/1.8 is 371g (13.1 oz) vs 620g (1.37 lb) — you'll feel the difference handheld.
Frequently asked
Is the Sony FE 85mm f/1.8 or the Tamron 50-300mm f/4.5-6.3 Di III VC VXD better?
The Tamron 50-300mm f/4.5-6.3 Di III VC VXD is a zoom (50-300mm) and the Sony FE 85mm f/1.8 is an 85mm prime. The zoom gives you framing flexibility from one lens; the prime trades that for a fixed focal length that's usually brighter (f/1.8 vs f/4.5) and lighter to carry. Choose flexibility or a fast single focal length.
Who should choose the Sony FE 85mm f/1.8?
Choose the Sony FE 85mm f/1.8 if you want more light and background blur — f/1.8 is faster than f/4.5, better for low light and subject separation. Choose it if you prefer a fast, compact single focal length — an 85mm prime over a zoom. Choose it if you value portability — at 371g (13.1 oz) it's lighter than the 620g (1.37 lb) alternative for travel and all-day carry.
Who should choose the Tamron 50-300mm f/4.5-6.3 Di III VC VXD?
Choose the Tamron 50-300mm f/4.5-6.3 Di III VC VXD if you need more reach — it goes to 300mm vs 85mm for distant subjects, wildlife and sport. Choose it if you shoot wide — it starts at 50mm vs 85mm for landscapes, interiors and architecture. Choose it if you want one-lens flexibility — a 50-300mm zoom covers what the fixed 85mm 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 85mm f/1.8 and the Tamron 50-300mm f/4.5-6.3 Di III VC VXD?
Aperture: the Sony FE 85mm f/1.8 opens to f/1.8 vs the Tamron 50-300mm f/4.5-6.3 Di III VC VXD's f/4.5 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 85mm | 50-300mm |
| Lens Type | Prime | Zoom |
| Optical Elements | 9 | 18 |
| Optical Groups | 8 | 14 |
| Aperture & Iris | ||
| Maximum Aperture | f/1.8 | f/4.5 |
| Minimum Aperture | f/22 | f/32 |
| Aperture Blades | 9 | 9 |
| Rounded Aperture | Yes | Yes |
| Coverage & Angle | ||
| Format Coverage | Full-Frame | Full-Frame |
| Lens Mount | Sony E | Sony E |
| Angle of View | 29° – 29° | 47° – 8° |
| 35mm Equivalent | − | − |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | DDSSM | VXD |
| Focus Limiter | No | No |
| AF/MF Switch | Yes | Yes |
| Min Focus Distance | 80 cm | 70 cm |
| Max Magnification | 0.13x | 0.29x |
| Stabilization & Video | ||
| Optical Stabilization | No | Yes |
| Aperture Ring | No | No |
| Declickable Aperture | No | No |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $599 | $699 |
| Filter Size | 67mm | 67mm |
| Diameter | 78mm | 79.4mm |
| Length | 82mm | 148.5mm |
| Weight | 371g (13.1 oz) | 620g (1.37 lb) |
| Weather Sealed | Yes | Yes |
| Tripod Collar | No | No |
