Sony FE 28-70mm F2 GM vs Sigma 18-50mm F2.8 DC DN | Contemporary 021
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
Verdict at a glance
- Sony FE 28-70mm F2 GM is faster by 1 stop (f/2.0 vs f/2.8), letting in more light.
- Sigma 18-50mm F2.8 DC DN | Contemporary 021 is lighter by 628g.
- Sigma 18-50mm F2.8 DC DN | Contemporary 021 goes wider (18mm vs 28mm).
- Sony FE 28-70mm F2 GM reaches further (70mm vs 50mm).
| Spec | FE 28-70mm F2 GM | 18-50mm F2.8 DC DN | Contemporary 021 |
|---|---|---|
| Brand | Sony | Sigma |
| Mount | Sony E | Sony E |
| Type | Zoom | Zoom |
| Focal length | 28-70mm | 18-50mm (wider) |
| Max aperture | f/2.0 (faster) | f/2.8 |
| Released | 2024 | n/a |
| Format | full-frame | aps-c |
| Weight g | 918.0 | 290 (lighter) |
| Filter mm | 86 | 55 |
| Length mm | 139.8 | 76.5 |
| Diameter mm | 92.9 | 61.6 |
| Min focus m | 0.38 | 0.121 (closer focusing) |
| Max magnification | 0.23 | 0.36 |
| Blades | n/a | 7 |
| Groups | n/a | 10 |
| Af motor | n/a | Stepping motor |
| Elements | n/a | 13 |
Sony FE 28-70mm F2 GM
Fast standard zoom for full-frame E-mount offering a constant f/2 aperture across 28-70mm. It is intended to cover several prime focal lengths in one lens.
Pros
- f/2 across the whole zoom range
- Wider aperture than a 24-70mm f/2.8
- Linear focus motors
Cons
- Heavier than f/2.8 zooms at about 918 g
- Starts at 28mm
Sigma 18-50mm F2.8 DC DN | Contemporary 021
A compact f/2.8 standard zoom for APS-C E-mount cameras, weighing about 290 g. It takes 55mm filters and offers a close focus distance of 0.121 m.
Pros
- Constant f/2.8
- Very light at 290 g
- Close focus 0.121 m
- Stepping motor autofocus
Cons
- APS-C only
- No stabilization in the lens
- Less range than a kit zoom