Sigma 28-105mm F2.8 DG DN Art vs Sony FE 50mm f/1.4 GM
The bottom line
The Sigma 28-105mm F2.8 DG DN Art is a zoom (28-105mm) and the Sony FE 50mm f/1.4 GM is a 50mm 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/2.8) and lighter to carry. Choose flexibility or a fast single focal length.
Choose the Sigma 28-105mm F2.8 DG DN Art if…
- ✓You need more reach — it goes to 105mm vs 50mm for distant subjects, wildlife and sport.
- ✓You shoot wide — it starts at 28mm vs 50mm for landscapes, interiors and architecture.
- ✓You want one-lens flexibility — a 28-105mm zoom covers what the fixed 50mm can't reframe.
Choose the Sony FE 50mm f/1.4 GM if…
- ✓You want more light and background blur — f/1.4 is faster than f/2.8, better for low light and subject separation.
- ✓You prefer a fast, compact single focal length — a 50mm prime over a zoom.
- ✓You value portability — at 516g (1.14 lb) it's lighter than the 1055g (2.33 lb) alternative for travel and all-day carry.
Where they differ
- ›Aperture: the Sony FE 50mm f/1.4 GM opens to f/1.4 vs the Sigma 28-105mm F2.8 DG DN Art's f/2.8 — more light and shallower depth-of-field.
- ›Focal range: Sigma 28-105mm F2.8 DG DN Art is 28-105mm, Sony FE 50mm f/1.4 GM is 50mm — different framing and reach.
- ›Type: the Sigma 28-105mm F2.8 DG DN Art is a zoom (flexible framing), the Sony FE 50mm f/1.4 GM a prime (one focal length, usually brighter and lighter).
- ›Weight: the Sony FE 50mm f/1.4 GM is 516g (1.14 lb) vs 1055g (2.33 lb) — you'll feel the difference handheld.
Frequently asked
Is the Sigma 28-105mm F2.8 DG DN Art or the Sony FE 50mm f/1.4 GM better?
The Sigma 28-105mm F2.8 DG DN Art is a zoom (28-105mm) and the Sony FE 50mm f/1.4 GM is a 50mm 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/2.8) and lighter to carry. Choose flexibility or a fast single focal length.
Who should choose the Sigma 28-105mm F2.8 DG DN Art?
Choose the Sigma 28-105mm F2.8 DG DN Art if you need more reach — it goes to 105mm vs 50mm for distant subjects, wildlife and sport. Choose it if you shoot wide — it starts at 28mm vs 50mm for landscapes, interiors and architecture. Choose it if you want one-lens flexibility — a 28-105mm zoom covers what the fixed 50mm can't reframe.
Who should choose the Sony FE 50mm f/1.4 GM?
Choose the Sony FE 50mm f/1.4 GM if you want more light and background blur — f/1.4 is faster than f/2.8, better for low light and subject separation. Choose it if you prefer a fast, compact single focal length — a 50mm prime over a zoom. Choose it if you value portability — at 516g (1.14 lb) it's lighter than the 1055g (2.33 lb) alternative for travel and all-day carry.
What is the main difference between the Sigma 28-105mm F2.8 DG DN Art and the Sony FE 50mm f/1.4 GM?
Aperture: the Sony FE 50mm f/1.4 GM opens to f/1.4 vs the Sigma 28-105mm F2.8 DG DN Art's f/2.8 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 28-105mm | 50mm |
| Lens Type | Zoom | Prime |
| Optical Elements | 18 | 14 |
| Optical Groups | 13 | 11 |
| Aperture & Iris | ||
| Maximum Aperture | f/2.8 | 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 | 75° – 23° | 47° – 47° |
| 35mm Equivalent | − | − |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | HLA | XD Linear |
| Focus Limiter | No | No |
| AF/MF Switch | Yes | Yes |
| Min Focus Distance | 37 cm | 38 cm |
| Max Magnification | 0.2x | 0.16x |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | Yes | Yes |
| Declickable Aperture | Yes | Yes |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $1,299 | $1,299 |
| Filter Size | 82mm | 67mm |
| Diameter | 92mm | 80.6mm |
| Length | 149.2mm | 96mm |
| Weight | 1055g (2.33 lb) | 516g (1.14 lb) |
| Weather Sealed | Yes | Yes |
| Tripod Collar | No | No |
