Canon RF 10-20mm F4 L IS STM vs Sigma 16-300mm f/3.5-6.7 DC OS Contemporary
Both are Canon RF lenses. Here is what actually differs.
Pick the Canon RF 10-20mm F4 L IS STM if
- You want the lighter lens to carry: 55 g lighter (570 g vs 625 g)
- You want a wider view: 10mm vs 16mm at the wide end
- You shoot full frame: the Sigma 16-300mm f/3.5-6.7 DC OS Contemporary is made for APS-C
- Our notes say it suits: Landscapes, architecture and interiors, astro and wide video
Pick the Sigma 16-300mm f/3.5-6.7 DC OS Contemporary if
- You need ⅓ stop more light for low light or background blur (f/3.5 vs f/4)
- You need more reach: 300mm vs 20mm at the long end
- You want bigger close-ups: 0.5× vs 0.12× maximum magnification
- You prefer a newer design: released 2025 vs 2023
Spec differences
15 differences| Canon RF 10-20mm F4 L IS STM | Sigma 16-300mm f/3.5-6.7 DC OS Contemporary | |
|---|---|---|
| Brand |
Canon
|
Sigma
|
| Type |
Wide Zoom
|
Superzoom
|
| Format |
Full frame
|
APS-C
|
| Focal length |
10-20mm
|
16-300mm
|
| Max aperture |
f/4
|
f/3.5
⅓ stop faster
|
| Weight |
570 g
lighter
|
625 g
|
| Length |
112 mm
shorter
|
121.4 mm
|
| Diameter |
83.7 mm
|
73.8 mm
slimmer
|
| Filter thread |
not listed
|
67 mm
|
| Min focus distance |
0.25 m
|
not listed
|
| Max magnification |
0.12×
|
0.5×
larger
|
| Optical design |
16 elements / 12 groups
|
20 elements / 14 groups
|
| Autofocus motor |
STM
|
Linear motor
|
| Weather sealing |
not listed
|
Yes
|
| Released |
2023
|
2025
|
3 identical specs hidden: mount, aperture blades, image stabilization. Show all
- Mount
- Canon RF both
- Aperture blades
- 9 both
- Image stabilization
- Yes both
Our notes
Canon RF 10-20mm F4 L IS STM
A full-frame ultra-wide zoom for Canon RF mirrorless cameras with image stabilization and a constant f/4 aperture. L-series build.
Pros
- Very wide 10mm start
- Constant f/4
- Image stabilization
- L-series build
Cons
- Bulbous front element limits filter use
- Slower than f/2.8 wide zooms
- Software distortion correction is part of the design
Our notes
Sigma 16-300mm f/3.5-6.7 DC OS Contemporary
More comparisons
Canon RF 10-20mm F4 L IS STM vs Tamron 18-300mm F3.5-6.3 B061 RF
wider (10mm) vs ⅓ stop faster
Canon RF 10-20mm F4 L IS STM vs Laowa 10-18mm f/4.5-5.6 FE Zoom
Canon RF 10-20mm F4 L IS STM: ⅓ stop faster, more reach (20mm)
Canon RF 14-35mm F4 L IS USM vs Sigma 16-300mm f/3.5-6.7 DC OS Contemporary
85 g lighter vs ⅓ stop faster
Canon RF 10-20mm F4 L IS STM vs Laowa 8-16mm f/3.5-5 Zoom CF
more reach (20mm) vs ⅓ stop faster
Tamron 18-300mm F3.5-6.3 B061 RF vs Sigma 16-300mm f/3.5-6.7 DC OS Contemporary
Sigma 16-300mm f/3.5-6.7 DC OS Contemporary: wider (16mm), more blades
Laowa 8-16mm f/3.5-5 Zoom CF vs Sigma 16-300mm f/3.5-6.7 DC OS Contemporary
wider (8mm) vs more reach (300mm)