Sigma 18-50mm f/2.8 DC DN Contemporary vs 50-120mm f/2.8 DC OS Contemporary
Both are Canon RF zoom lenses for APS-C. Here is what actually differs.
Pick the 18-50mm f/2.8 DC DN Contemporary if
- You want the lighter lens to carry: 110 g lighter (300 g vs 410 g)
- You want a wider view: 18mm vs 50mm at the wide end
- You want a compact lens: 74.5 mm vs 97 mm long
Pick the 50-120mm f/2.8 DC OS Contemporary if
- You need more reach: 120mm vs 50mm at the long end
- You shoot handheld in dim light or video: it has optical image stabilization and the 18-50mm f/2.8 DC DN Contemporary does not
- You care about the shape of out-of-focus highlights: 11 aperture blades vs 7
- You prefer a newer design: released 2026 vs 2021
Spec differences
12 differences| 18-50mm f/2.8 DC DN Contemporary | 50-120mm f/2.8 DC OS Contemporary | |
|---|---|---|
| Focal length |
18-50mm
|
50-120mm
|
| Weight |
300 g
lighter
|
410 g
|
| Length |
74.5 mm
shorter
|
97 mm
|
| Diameter |
69.2 mm
|
69 mm
|
| Min focus distance |
not listed
|
0.23 m
|
| Max magnification |
0.36×
larger
|
0.33×
|
| Aperture blades |
7
|
11
more blades
|
| Optical design |
not listed
|
18 elements / 13 groups
|
| Autofocus motor |
Stepping motor
|
Linear motor
|
| Image stabilization |
No
|
Yes
stabilized
|
| Weather sealing |
not listed
|
Yes
|
| Released |
2021
|
2026
|
6 identical specs hidden: brand, mount, type, format, max aperture, filter thread. Show all
- Brand
- Sigma both
- Mount
- Canon RF both
- Type
- Zoom both
- Format
- APS-C both
- Max aperture
- f/2.8 both
- Filter thread
- 55 mm both
More comparisons
Canon RF 15-35mm F2.8 L IS USM vs Sigma 18-50mm f/2.8 DC DN Contemporary
wider (15mm) vs 540 g lighter
Canon RF 24-105mm F2.8 L IS USM Z vs Sigma 50-120mm f/2.8 DC OS Contemporary
wider (24mm) vs 920 g lighter
Canon RF 24-105mm F2.8 L IS USM Z vs Sigma 18-50mm f/2.8 DC DN Contemporary
more reach (105mm) vs 1030 g lighter
Canon RF 28-70mm F2.8 IS STM vs Sigma 50-120mm f/2.8 DC OS Contemporary
wider (28mm) vs 85 g lighter
Sigma 18-50mm f/2.8 DC DN Contemporary vs Tamron 11-20mm f/2.8 Di III-A RXD
more reach (50mm) vs wider (11mm)
Sigma 50-120mm f/2.8 DC OS Contemporary vs Tamron 16-50mm f/2.8 A
more reach (120mm) vs 105 g lighter