Upgrade Guide
Canon EOS M3→Canon EOS R6 Mark III
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Worthwhile
Clear improvements over the EOS M3. Whether it justifies the cost depends on which upgrades matter most to your shooting.
What's new in the EOS R6 Mark III
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Resolution32MP vs 24MP (+8MP)
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Weather sealingAdded — fully sealed body
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Burst rate40fps (electronic shutter), 12fps (mechanical) vs 4.2fps
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Battery life~580 shots (CIPA, LP-E6P) vs ~250 shots (CIPA)
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Generation10 years newer (2025 vs 2015)
Suitability by genre
| Genre | EOS M3 | EOS R6 Mark III | |
|---|---|---|---|
| Casual | -2.0 | ||
| Travel | -0.5 | ||
| Portrait | +0.5 | ||
| Street | — | ||
| Vlogging & Video | +4.5 | ||
| Sports & Action | +5.5 | ||
| Wildlife | — | ||
| Landscape | — |
Full spec comparison
| Spec | EOS M3 | EOS R6 Mark III | |
|---|---|---|---|
| Price | £150 | £2,799 | |
| Released | 2015 | 2025 | ↑ |
| Sensor | 24.2MP APS-C CMOS | 32.5MP full-frame stacked CMOS | |
| Resolution | 24MP | 32MP | ↑ |
| Video | 1080p/30p | 4K 60fps oversampled from 7K, 6K RAW internal | |
| Autofocus | Hybrid CMOS AF III (phase-detect + contrast-detect) | Dual Pixel CMOS AF II — deep-learning subject detection for people, animals and vehicles, up to 40fps tracking | |
| Stabilisation | — | In-body 5-axis IS, up to 8.5 stops | |
| Burst Rate | 4.2fps | 40fps (electronic shutter), 12fps (mechanical) | ↑ |
| Battery Life | ~250 shots (CIPA) | ~580 shots (CIPA, LP-E6P) | ↑ |
| Weight | 366g (body only) | 670g (body with battery and card) | ↓ |
| Weather Sealed | No | Yes | ↑ |
| Viewfinder | None (optional EVF-DC1 accessory) | EVF, 5.76M-dot, up to 120fps | |
| Screen | 3.0" tilting touchscreen, 1.04M dots | 3.2-inch vari-angle touchscreen, 2.1M-dot | |
| Mount | Canon EF-M mount | Canon RF | |
| Memory Cards | Single SD UHS-I slot | Dual SD / SDHC / SDXC (UHS-II) |
Compare side-by-side
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