Upgrade Guide
Canon EOS R5 Mark II→Canon EOS-1Ds
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Skip it
The EOS-1Ds offers little measurable spec improvement over the EOS R5 Mark II. Spend the money on glass instead.
Unchanged or similar
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Resolution11MP (down from 45MP — optimised for low light)
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StabilisationIBIS not present in new body
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 R5 Mark II | EOS-1Ds | |
|---|---|---|---|
| Portrait | -3.7 | ||
| Street | -3.1 | ||
| Travel | -3.2 | ||
| Wedding & Events | -4.0 | ||
| Vlogging & Video | — | ||
| Filmmaking | — | ||
| Documentary | -4.7 | ||
| Sports & Action | -4.6 | ||
| Landscape | -3.1 | ||
| Wildlife | -3.9 | ||
| Casual | -3.5 | ||
| Food | -4.8 | ||
| Macro | -5.7 | ||
| Architecture | -3.5 | ||
| Astrophotography | -0.8 |
Full spec comparison
| Spec | EOS R5 Mark II | EOS-1Ds | |
|---|---|---|---|
| Price | £4,299 | £200 | |
| Released | 2024 | 2002 | ↓ |
| Sensor | 45MP full-frame BSI stacked CMOS | 11.1MP full-frame CMOS | |
| Resolution | 45MP | 11MP | ↓ |
| Video | 8K/60p RAW, 4K/120p, Cinema RAW Light | — | |
| Autofocus | Dual Pixel CMOS AF II, AI subject tracking | 45-point AF with 7 cross-type points | |
| Stabilisation | 8-stop IBIS (coordinated with IS lenses) | — | |
| Burst Rate | 30fps electronic / 12fps mechanical | 3fps continuous | ↓ |
| Battery Life | 570 shots (CIPA) | ~500 shots per charge | ↓ |
| Weight | 746g (body only) | 1270g (body only) | ↓ |
| Weather Sealed | Yes | Yes | |
| Viewfinder | 0.64" OLED EVF, 5.76M dots, 120fps | OVF, 0.70× magnification, 100% coverage | |
| Screen | 3.2" fully articulating touchscreen | 2.0" fixed LCD | |
| Mount | Canon RF | Canon EF | |
| Memory Cards | CFexpress Type B + SD UHS-II | CompactFlash Type I/II |
Compare side-by-side
⚖️ Compare these cameras
See EOS R5 Mark II and EOS-1Ds next to each other with our interactive comparison tool.
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Tell us what you shoot and we'll score the EOS-1Ds against your specific genres — not just specs.
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