Between the SL3 and OM-1 Mark II, the SL3 comes out ahead in megapixels and sensor size, while the OM-1 Mark II wins on weight and af points. Overall, the SL3 scores 70.8 and the OM-1 Mark II scores 42.8 on our Mars Score.
Which should you buy?
The SL3 is the clear pick on raw spec strength, leading by 28.0 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 SL3 if you care most about megapixels and sensor size. The biggest gaps in its favor are megapixels, sensor size, max video.
Pick the OM-1 Mark II if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight, af points.
Both ship with comparable in-body stabilization, log profile, so those specs don't separate the two — focus on the differences below.
Bottom line: the SL3 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Leica - SL3 wins
- ▲Megapixels — 200.00% more. 60 MP vs 20 MP.
- ▲Sensor size: Full Frame (vs Four Thirds).
- ▲Max video: 8K (vs 4K60).
Why OM System - OM-1 Mark II wins
- ▲Weight — 251.00 g less. 599 vs 850.
- ▲AF points — 35.17% more. 1053 vs 779.
Spec comparison
Sensor
| Spec | Leica - SL3 | OM System - OM-1 Mark II |
|---|---|---|
| Sensor sizeⓘ | Full Framelead | Four Thirds |
| Megapixels | 60 MPlead | 20 MP |
| Max ISO | 100000 | 102400lead |
Video
| Spec | Leica - SL3 | OM System - OM-1 Mark II |
|---|---|---|
| Max video | 8Klead | 4K60 |
| RAW video | truelead | false |
| Log profileⓘ | true | true |
Autofocus
| Spec | Leica - SL3 | OM System - OM-1 Mark II |
|---|---|---|
| AF pointsⓘ | 779 | 1053lead |
| Eye AFⓘ | true | true |
| In-body stabilizationⓘ | true | true |
Body & Controls
| Spec | Leica - SL3 | OM System - OM-1 Mark II |
|---|---|---|
| Weight | 850 g | 599 glead |
| Weather sealedⓘ | true | true |
| Dual card slotsⓘ | true | true |
Frequently asked
Spec-level deep dives
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