Upgrade Guide
Canon EOS-1D X→Canon EOS 400D
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Skip it
The EOS 400D offers little measurable spec improvement over the EOS-1D X. Spend the money on glass instead.
Unchanged or similar
-
Resolution10MP (down from 18MP — optimised for low light)
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 X | EOS 400D | |
|---|---|---|---|
| Portrait | -1.1 | ||
| Street | +1.5 | ||
| Travel | +1.2 | ||
| Wedding & Events | -2.8 | ||
| Documentary | -1.2 | ||
| Sports & Action | -2.3 | ||
| Landscape | -1.1 | ||
| Wildlife | -1.4 | ||
| Casual | +1.0 | ||
| Food | -0.3 | ||
| Macro | -0.2 | ||
| Architecture | -1.2 | ||
| Astrophotography | -1.3 |
Full spec comparison
| Spec | EOS-1D X | EOS 400D | |
|---|---|---|---|
| Price | — | £31 used | |
| Released | 2012 | 2006 | ↓ |
| Sensor | 18.1MP full-frame CMOS | 10.1MP APS-C CMOS | |
| Resolution | 18MP | 10MP | ↓ |
| Video | Full HD 1080p/30, 720p/60 | No video | |
| Autofocus | 61-point phase-detect AF (41 cross-type) with EOS iTR tracking | 9-point phase-detect AF | |
| Stabilisation | No IBIS (lens-based stabilisation only) | No IBIS (lens-based stabilisation only) | |
| Burst Rate | 12fps | 3fps | ↓ |
| Battery Life | ~1120 shots (CIPA) | ~360 shots (CIPA) | ↓ |
| Weight | 1530g (with battery) | 510g (with battery) | ↑ |
| Weather Sealed | Not weather sealed | Not weather sealed | |
| Viewfinder | Optical pentaprism, 100% coverage, 0.76x | Optical pentamirror, 95% coverage, 0.8x | |
| Screen | 3.2" fixed LCD, 1.04M dots | 2.5" fixed LCD, 230k dots | |
| Mount | Canon EF | Canon EF | |
| Memory Cards | Dual CompactFlash slots | Single CompactFlash slot |
Compare side-by-side
⚖️ Compare these cameras
See EOS-1D X and EOS 400D next to each other with our interactive comparison tool.
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Tell us what you shoot and we'll score the EOS 400D against your specific genres — not just specs.
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