Upgrade Guide
Canon EOS R6 Mark III→Canon EOS M3
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
→
Skip it
The EOS M3 offers little measurable spec improvement over the EOS R6 Mark III. Spend the money on glass instead.
Unchanged or similar
-
Resolution24MP (down from 32MP — optimised for low light)
-
Weather sealingNot present in new body
Suitability by genre
| Genre | EOS R6 Mark III | EOS M3 | |
|---|---|---|---|
| Sports & Action | -5.5 | ||
| Wildlife | — | ||
| Vlogging & Video | -4.5 | ||
| Portrait | -0.5 | ||
| Landscape | — | ||
| Travel | +0.5 | ||
| Street | — | ||
| Casual | +2.0 |
Full spec comparison
| Spec | EOS R6 Mark III | EOS M3 | |
|---|---|---|---|
| Price | £2,799 | £150 | |
| Released | 2025 | 2015 | ↓ |
| Sensor | 32.5MP full-frame stacked CMOS | 24.2MP APS-C CMOS | |
| Resolution | 32MP | 24MP | ↓ |
| Video | 4K 60fps oversampled from 7K, 6K RAW internal | 1080p/30p | |
| Autofocus | Dual Pixel CMOS AF II — deep-learning subject detection for people, animals and vehicles, up to 40fps tracking | Hybrid CMOS AF III (phase-detect + contrast-detect) | |
| Stabilisation | In-body 5-axis IS, up to 8.5 stops | — | |
| Burst Rate | 40fps (electronic shutter), 12fps (mechanical) | 4.2fps | ↓ |
| Battery Life | ~580 shots (CIPA, LP-E6P) | ~250 shots (CIPA) | ↓ |
| Weight | 670g (body with battery and card) | 366g (body only) | ↑ |
| Weather Sealed | Yes | No | ↓ |
| Viewfinder | EVF, 5.76M-dot, up to 120fps | None (optional EVF-DC1 accessory) | |
| Screen | 3.2-inch vari-angle touchscreen, 2.1M-dot | 3.0" tilting touchscreen, 1.04M dots | |
| Mount | Canon RF | Canon EF-M mount | |
| Memory Cards | Dual SD / SDHC / SDXC (UHS-II) | Single SD UHS-I slot |
Compare side-by-side
⚖️ Compare these cameras
See EOS R6 Mark III and EOS M3 next to each other with our interactive comparison tool.
Get a personalised upgrade score
Run the upgrade checker →
Tell us what you shoot and we'll score the EOS M3 against your specific genres — not just specs.
Other upgrades from the EOS R6 Mark III
Related buying guides
Camera family history