Upgrade Guide
Canon EOS-1Ds→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-1Ds. 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 11MP (+21MP)
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Burst rate40fps (electronic shutter), 12fps (mechanical) vs 3fps continuous
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Battery life~580 shots (CIPA, LP-E6P) vs ~500 shots per charge
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Generation23 years newer (2025 vs 2002)
Suitability by genre
Base scores — computed from verified specs for an enthusiast shooting photo and video. The Upgrade Checker adjusts them for your skill level.
| Genre | EOS-1Ds | EOS R6 Mark III | |
|---|---|---|---|
| Portrait | +3.6 | ||
| Street | +3.1 | ||
| Travel | +3.2 | ||
| Wedding & Events | +4.0 | ||
| Documentary | +4.6 | ||
| Sports & Action | +4.1 | ||
| Landscape | +2.8 | ||
| Wildlife | +3.5 | ||
| Casual | +3.6 | ||
| Food | +4.7 | ||
| Macro | +5.5 | ||
| Architecture | +3.2 | ||
| Astrophotography | +1.0 | ||
| Vlogging & Video | — | ||
| Filmmaking | — |
Full spec comparison
| Spec | EOS-1Ds | EOS R6 Mark III | |
|---|---|---|---|
| Price | £200 | £2,799 | |
| Released | 2002 | 2025 | ↑ |
| Sensor | 11.1MP full-frame CMOS | 32.5MP full-frame stacked CMOS | |
| Resolution | 11MP | 32MP | ↑ |
| Video | — | 4K 60fps oversampled from 7K, 6K RAW internal | |
| Autofocus | 45-point AF with 7 cross-type points | 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 | 3fps continuous | 40fps (electronic shutter), 12fps (mechanical) | ↑ |
| Battery Life | ~500 shots per charge | ~580 shots (CIPA, LP-E6P) | ↑ |
| Weight | 1270g (body only) | 609g (body only) | ↑ |
| Weather Sealed | Yes | Yes | |
| Viewfinder | OVF, 0.70× magnification, 100% coverage | EVF, 5.76M-dot, up to 120fps | |
| Screen | 2.0" fixed LCD | 3.2-inch vari-angle touchscreen, 2.1M-dot | |
| Mount | Canon EF | Canon RF | |
| Memory Cards | CompactFlash Type I/II | Dual SD / SDHC / SDXC (UHS-II) |
Compare side-by-side
⚖️ Compare these cameras
See EOS-1Ds and EOS R6 Mark III 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 R6 Mark III against your specific genres — not just specs.
Other upgrades from the EOS-1Ds
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Camera family history