Upgrade Guide
Canon EOS M100→Canon EOS 5D Mark III
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Strong upgrade
The EOS 5D Mark III improves across 3 key areas at a reasonable price gap. Most EOS M100 owners will notice the difference.
What's new in the EOS 5D Mark III
-
Weather sealingAdded — fully sealed body
-
StabilisationIBIS added — significant for handheld and video
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Battery life~950 shots (CIPA) vs ~295 shots (CIPA)
Unchanged or similar
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ResolutionSimilar (22MP)
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 M100 | EOS 5D Mark III | |
|---|---|---|---|
| Portrait | +1.1 | ||
| Street | -2.3 | ||
| Travel | -1.6 | ||
| Wedding & Events | +3.3 | ||
| Vlogging & Video | — | ||
| Documentary | +1.3 | ||
| Sports & Action | +1.9 | ||
| Landscape | +0.6 | ||
| Wildlife | +1.7 | ||
| Casual | -3.0 | ||
| Food | -1.7 | ||
| Macro | -0.8 | ||
| Architecture | +0.4 | ||
| Astrophotography | +1.7 |
Full spec comparison
| Spec | EOS M100 | EOS 5D Mark III | |
|---|---|---|---|
| Price | £102 used | £125 used | |
| Released | 2017 | 2012 | ↓ |
| Sensor | 24.2MP APS-C CMOS (Dual Pixel) | 22.3MP full-frame CMOS | |
| Resolution | 24MP | 22MP | ↓ |
| Video | 1080p/60p | Full HD 1080p/30, 720p/60 | |
| Autofocus | Dual Pixel CMOS AF with face and subject detection | 61-point phase-detect (41 cross-type) via viewfinder; contrast AF with face detection in live view | |
| Stabilisation | — | No IBIS (lens-based stabilisation only) | |
| Burst Rate | 6.1fps | 6fps | ↓ |
| Battery Life | ~295 shots (CIPA) | ~950 shots (CIPA) | ↑ |
| Weight | 266g (body only) | 950g (with battery) | ↓ |
| Weather Sealed | Not weather sealed | Yes | ↑ |
| Viewfinder | No viewfinder | Optical pentaprism, 100% coverage, 0.71x | |
| Screen | 3.0" tilting touchscreen, 1.04M dots | 3.2" fixed LCD, 1.04M dots | |
| Mount | Canon EF-M mount | Canon EF | |
| Memory Cards | Single SD UHS-I slot | Dual slots: CompactFlash + SD |
Compare side-by-side
⚖️ Compare these cameras
See EOS M100 and EOS 5D Mark III 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 5D Mark III against your specific genres — not just specs.
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