Upgrade Guide
Canon EOS-1D Mark III→Canon EOS 90D
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Worthwhile
Clear improvements over the EOS-1D Mark III. Whether it justifies the cost depends on which upgrades matter most to your shooting.
What's new in the EOS 90D
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Resolution32MP vs 10MP (+22MP)
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Weather sealingAdded — fully sealed body
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Generation12 years newer (2019 vs 2007)
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-1D Mark III | EOS 90D | |
|---|---|---|---|
| Portrait | +1.3 | ||
| Street | +1.6 | ||
| Travel | +2.1 | ||
| Wedding & Events | +1.3 | ||
| Documentary | +3.0 | ||
| Sports & Action | +0.8 | ||
| Landscape | +2.7 | ||
| Wildlife | +1.0 | ||
| Casual | +2.7 | ||
| Food | +2.8 | ||
| Macro | +2.7 | ||
| Architecture | +2.3 | ||
| Astrophotography | +0.1 | ||
| Vlogging & Video | — | ||
| Filmmaking | — |
Full spec comparison
| Spec | EOS-1D Mark III | EOS 90D | |
|---|---|---|---|
| Price | £102 used | £863 | |
| Released | 2007 | 2019 | ↑ |
| Sensor | 10.1MP APS-H CMOS | 32.5MP APS-C CMOS (Dual Pixel AF) | |
| Resolution | 10MP | 32MP | ↑ |
| Video | No video | 4K/30p (1.6× crop), FHD/120p | |
| Autofocus | 45-point phase-detect (19 cross-type + 26 assist) via viewfinder | Dual Pixel CMOS AF (live view), 45-point phase-detect (OVF) | |
| Stabilisation | No IBIS (lens-based stabilisation only) | No stabilisation | |
| Burst Rate | 10fps | 10fps mechanical | |
| Battery Life | ~2200 shots (CIPA) | ~1300 shots (CIPA with OVF) | ↓ |
| Weight | 1155g (body only) | 701g (body only) | ↑ |
| Weather Sealed | Not weather sealed | Yes | ↑ |
| Viewfinder | Optical pentaprism, 100% coverage, 0.76x | Optical pentaprism, 100% coverage, 0.95× magnification | |
| Screen | 3.0" fixed LCD, 230k dots | 3.0" vari-angle touchscreen | |
| Mount | Canon EF | Canon EF / EF-S | |
| Memory Cards | Dual slots: CompactFlash + SD | Dual SD UHS-II slots |
Compare side-by-side
⚖️ Compare these cameras
See EOS-1D Mark III and EOS 90D next to each other with our interactive comparison tool.
Get a personalised upgrade score
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Tell us what you shoot and we'll score the EOS 90D against your specific genres — not just specs.
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