Canon - RF 24-70mm f/2.8L IS USM vs Sigma - 85mm f/1.4 DG DN Art
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Canon - RF 24-70mm f/2.8L IS USM | Sigma - 85mm f/1.4 DG DN Art |
|---|---|---|
| Weight | 900 g | 625 g |
| Optical stabilization | true | false |
| Min focal | 24 mm | 85 mm |
| Max focal | 70 mm | 85 mm |
Between the RF 24-70mm f/2.8L IS USM and 85mm f/1.4 DG DN Art, the RF 24-70mm f/2.8L IS USM comes out ahead in optical stabilization, while the 85mm f/1.4 DG DN Art wins on weight / min focal. Overall, the RF 24-70mm f/2.8L IS USM scores 64.6 and the 85mm f/1.4 DG DN Art scores 73.2 on our Mars Score.
Which should you buy?
The 85mm f/1.4 DG DN Art is the clear pick on raw spec strength, leading by 8.6 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the RF 24-70mm f/2.8L IS USM if you care most about optical stabilization. The biggest gaps in its favor are optical stabilization. The single most decisive one: Has Optical stabilization.
Pick the 85mm f/1.4 DG DN Art if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight, min focal, max focal. The single most decisive one: Weight — 275.00 g less. 625 vs 900.
Both ship with comparable weather sealed, so those specs do not separate the two — focus on the differences below.
Bottom line: the 85mm f/1.4 DG DN Art is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Canon - RF 24-70mm f/2.8L IS USM or Sigma - 85mm f/1.4 DG DN Art?
Sigma - 85mm f/1.4 DG DN Art leads the current Mars Score by 8.6 points.The more useful decision is the trade-off behind that result: compare min focal, max focal, weight against the way you will actually use the product.
Choose Canon - RF 24-70mm f/2.8L IS USM if…
Canon - RF 24-70mm f/2.8L IS USM has the measurable edge on has stabilization.
Choose Sigma - 85mm f/1.4 DG DN Art if…
Sigma - 85mm f/1.4 DG DN Art has the measurable edge on weight g, focal min mm, focal max mm.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Canon - RF 24-70mm f/2.8L IS USM wins
- ▲Has Optical stabilization.
Why Sigma - 85mm f/1.4 DG DN Art wins
- ▲Weight — 275.00 g less. 625 vs 900.
- ▲Min focal: 85 (vs 24).
- ▲Max focal: 85 (vs 70).
Spec comparison
Optics
| Spec | Canon - RF 24-70mm f/2.8L IS USM | Sigma - 85mm f/1.4 DG DN Art |
|---|---|---|
| Min focal | 24 mm | 85 mmlead |
| Max focal | 70 mm | 85 mmlead |
| Max aperture | f/2.8 | f/1.4 |
| Min aperture | f/22 | f/16 |
Build
| Spec | Canon - RF 24-70mm f/2.8L IS USM | Sigma - 85mm f/1.4 DG DN Art |
|---|---|---|
| Weight | 900 g | 625 glead |
| Weather sealedⓘ | true | true |
| Optical stabilizationⓘ | truelead | false |
Mount
| Spec | Canon - RF 24-70mm f/2.8L IS USM | Sigma - 85mm f/1.4 DG DN Art |
|---|---|---|
| Lens mount | Canon RFlead | Sony E / L-Mount |