Upgrade Guide
Canon EOS R100→Canon EOS 40D
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Worthwhile
Clear improvements over the EOS R100. Whether it justifies the cost depends on which upgrades matter most to your shooting.
What's new in the EOS 40D
-
Weather sealingAdded — fully sealed body
-
Battery life~800 shots (CIPA) vs ~270 shots (CIPA)
Unchanged or similar
-
Resolution10MP (down from 24MP — 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 R100 | EOS 40D | |
|---|---|---|---|
| Portrait | -1.4 | ||
| Street | -1.8 | ||
| Travel | -1.0 | ||
| Wedding & Events | +0.2 | ||
| Filmmaking | — | ||
| Documentary | -1.1 | ||
| Sports & Action | -0.2 | ||
| Landscape | -0.4 | ||
| Wildlife | -0.5 | ||
| Casual | -3.8 | ||
| Food | -1.7 | ||
| Macro | -1.2 | ||
| Architecture | -1.2 | ||
| Astrophotography | +0.9 | ||
| Fun & simple | — |
Full spec comparison
| Spec | EOS R100 | EOS 40D | |
|---|---|---|---|
| Price | £559 | £26 used | |
| Released | 2023 | 2007 | ↓ |
| Sensor | 24.1MP APS-C CMOS | 10.1MP APS-C CMOS | |
| Resolution | 24MP | 10MP | ↓ |
| Video | 4K/30p (slight crop), 1080p/60p | No video | |
| Autofocus | Dual Pixel CMOS AF, face detection, subject tracking | 9-point all cross-type phase-detect via viewfinder; contrast AF in live view | |
| Stabilisation | No stabilisation | No IBIS (lens-based stabilisation only) | |
| Burst Rate | 6.5fps mechanical | 6.5fps | |
| Battery Life | ~270 shots (CIPA) | ~800 shots (CIPA) | ↑ |
| Weight | 356g (with battery and card) | 820g (with battery) | ↓ |
| Weather Sealed | Not weather sealed | Yes | ↑ |
| Viewfinder | EVF, 2.36M dots, 0.59× magnification | Optical pentaprism, 95% coverage, 0.95x | |
| Screen | 3.0" fixed LCD, 1.04M dots (no touch) | 3.0" fixed LCD, 230k dots | |
| Mount | Canon RF-mount | Canon EF / EF-S | |
| Memory Cards | Single SD UHS-II | Single CompactFlash slot |
Compare side-by-side
⚖️ Compare these cameras
See EOS R100 and EOS 40D 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 40D against your specific genres — not just specs.
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