Canon RF-S 10-18mm f/4.5-6.3 IS STM vs Sigma 10-18mm f/2.8 DC DN Contemporary
Both are Canon RF mount zooms for wide-angle and vlogging — here's how the specs differ and which to pick. Every spec is from the manufacturer's own catalog.
| Spec | Canon RF-S 10-18mm f/4.5-6.3 IS STM | Sigma 10-18mm f/2.8 DC DN Contemporary |
|---|---|---|
| Focal length | 10-18mm | 10-18mm |
| Max aperture | f/4.5-6.3 | f/2.8 |
| Type | zoom | zoom |
| Coverage | APS-C | APS-C |
| Mount | Canon RF | Canon RF |
Which should you buy?
- the Sigma 10-18mm f/2.8 DC DN Contemporary opens wider (f/2.8) — brighter in low light and more background blur
- the Canon RF-S 10-18mm f/4.5-6.3 IS STM is first-party (Canon) for guaranteed full autofocus and in-camera corrections; the Sigma 10-18mm f/2.8 DC DN Contemporary is third-party — usually the value pick
Where to buy
Check the Canon RF-S 10-18mm f/4.5-6.3 IS STM price on Amazon →
Check the Sigma 10-18mm f/2.8 DC DN Contemporary price on Amazon →
FAQ
What's the difference between the Canon RF-S 10-18mm f/4.5-6.3 IS STM and the Sigma 10-18mm f/2.8 DC DN Contemporary?
The Canon RF-S 10-18mm f/4.5-6.3 IS STM is 10-18mm f/4.5-6.3 zoom, APS-C; the Sigma 10-18mm f/2.8 DC DN Contemporary is 10-18mm f/2.8 zoom, APS-C. Both fit the Canon RF mount.
Which is better in low light, the Canon RF-S 10-18mm f/4.5-6.3 IS STM or the Sigma 10-18mm f/2.8 DC DN Contemporary?
The Sigma 10-18mm f/2.8 DC DN Contemporary — its f/2.8 maximum aperture lets in more light and gives more background blur than the f/4.5-6.3 of the other.
Do the Canon RF-S 10-18mm f/4.5-6.3 IS STM and Sigma 10-18mm f/2.8 DC DN Contemporary fit the same camera?
Yes — both are Canon RF mount lenses, so they fit Canon EOS R series (full-frame R5/R6/R8) and APS-C (R7/R10/R50).
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