Sony FE 85mm f/1.8 vs Viltrox AF 50mm f/1.4 PRO
The bottom line
These cover different focal lengths — the Sony FE 85mm f/1.8 is 85mm, the Viltrox AF 50mm f/1.4 PRO is 50mm — so they're not really substitutes. Pick by the field of view you actually need: the Sony FE 85mm f/1.8 for short-telephoto / portrait, the Viltrox AF 50mm f/1.4 PRO for short-telephoto / portrait.
Choose the Sony FE 85mm f/1.8 if…
- ✓You need more reach — it goes to 85mm vs 50mm for distant subjects, wildlife and sport.
- ✓You value portability — at 371g (13.1 oz) it's lighter than the 800g (1.76 lb) alternative for travel and all-day carry.
Choose the Viltrox AF 50mm f/1.4 PRO if…
- ✓You want more light and background blur — f/1.4 is faster than f/1.8, better for low light and subject separation.
- ✓You shoot wide — it starts at 50mm vs 85mm for landscapes, interiors and architecture.
Where they differ
- ›Aperture: the Viltrox AF 50mm f/1.4 PRO opens to f/1.4 vs the Sony FE 85mm f/1.8's f/1.8 — more light and shallower depth-of-field.
- ›Focal range: Sony FE 85mm f/1.8 is 85mm, Viltrox AF 50mm f/1.4 PRO is 50mm — different framing and reach.
- ›Weight: the Sony FE 85mm f/1.8 is 371g (13.1 oz) vs 800g (1.76 lb) — you'll feel the difference handheld.
Frequently asked
Is the Sony FE 85mm f/1.8 or the Viltrox AF 50mm f/1.4 PRO better?
These cover different focal lengths — the Sony FE 85mm f/1.8 is 85mm, the Viltrox AF 50mm f/1.4 PRO is 50mm — so they're not really substitutes. Pick by the field of view you actually need: the Sony FE 85mm f/1.8 for short-telephoto / portrait, the Viltrox AF 50mm f/1.4 PRO for short-telephoto / portrait.
Who should choose the Sony FE 85mm f/1.8?
Choose the Sony FE 85mm f/1.8 if you need more reach — it goes to 85mm vs 50mm for distant subjects, wildlife and sport. Choose it if you value portability — at 371g (13.1 oz) it's lighter than the 800g (1.76 lb) alternative for travel and all-day carry.
Who should choose the Viltrox AF 50mm f/1.4 PRO?
Choose the Viltrox AF 50mm f/1.4 PRO if you want more light and background blur — f/1.4 is faster than f/1.8, better for low light and subject separation. Choose it if you shoot wide — it starts at 50mm vs 85mm for landscapes, interiors and architecture.
What is the main difference between the Sony FE 85mm f/1.8 and the Viltrox AF 50mm f/1.4 PRO?
Aperture: the Viltrox AF 50mm f/1.4 PRO opens to f/1.4 vs the Sony FE 85mm f/1.8's f/1.8 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 85mm | 50mm |
| Lens Type | Prime | Prime |
| Optical Elements | 9 | 15 |
| Optical Groups | 8 | 11 |
| Aperture & Iris | ||
| Maximum Aperture | f/1.8 | f/1.4 |
| Minimum Aperture | f/22 | f/16 |
| Aperture Blades | 9 | 11 |
| Rounded Aperture | Yes | Yes |
| Coverage & Angle | ||
| Format Coverage | Full-Frame | Full-Frame |
| Lens Mount | Sony E | Sony E |
| Angle of View | 29° – 29° | 47° |
| 35mm Equivalent | − | − |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | DDSSM | VCM |
| Focus Limiter | No | No |
| AF/MF Switch | Yes | Yes |
| Min Focus Distance | 80 cm | 45 cm |
| Max Magnification | 0.13x | 0.15x |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | No | No |
| Declickable Aperture | No | No |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $599 | $549 |
| Filter Size | 67mm | 77mm |
| Diameter | 78mm | 84.5mm |
| Length | 82mm | 111mm |
| Weight | 371g (13.1 oz) | 800g (1.76 lb) |
| Weather Sealed | Yes | Yes |
| Tripod Collar | No | No |
