EOS-1D X Mark IIIvs EOS M
Canon
EOS-1D X Mark III (2020)
Starting from £3500 new
Best for Professional Sports, Wildlife & Press Photography
View EOS-1D X Mark III
Canon
EOS M (2012)
Starting from £80 new
Best for Canon mirrorless history & EF-M collectors
View EOS M
GearScore™ Verdict — Which should you buy?
Professional Sports, Wildlife & Press Photography — EOS-1D X Mark III (2020): Canon's DSLR masterpiece — 20fps live view, 5.5K RAW, 191 cross-type AF points, and dual CFexpress. Almost certainly the finest optical viewfinder camera ever made.
Canon Mirrorless History & Ef-M Collectors — EOS M (2012): Canon's first mirrorless — a historic body that broke new ground with touch-AF and EF-M, but its sluggish contrast-detect system quickly became its Achilles heel.
Who should buy what
EOS-1D X Mark III (2020)
- Sports and wildlife photographers with a Canon EF lens collection
- Professionals who prefer the optical viewfinder experience
- Press photographers who need 20fps, weather sealing, and Ethernet
- Canon historians who want to mark the end of the EOS-1D DSLR era
EOS M (2012)
- Canon shooters who want the camera that started Canon's mirrorless story
- Budget first-time mirrorless buyers who already own EF/EF-S glass
- Collectors of significant digital camera milestones
Quick take: The eos-1d x mark iii has the highest resolution at 20mp; the eos m is the most affordable; only the eos-1d x mark iii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS-1D X Mark III (2020) | EOS M (2012) |
|---|---|---|
| Price | £3,500 | £80 |
| Sensor | 20.1MP full-frame CMOS | 18MP APS-C CMOS |
| Resolution | 20.1MP | 18.0MP |
| Video | 5.5K RAW, 4K 60fps (crop), 4K 60fps (full-frame via firmware) | 1080p 30fps |
| Autofocus | 191-point all cross-type OVF AF; 525-point Dual Pixel CMOS AF (Live View) | Contrast-detect AF only — notoriously slow |
| Burst Rate | 16fps mechanical, 20fps live view | 4fps |
| Battery Life | ~2850 shots (CIPA) | ~230 shots (CIPA) |
| Weight | 1250g (body only) | 262g (body only) |
| Dimensions | 158 × 167.6 × 82.6mm | 108.6 × 66.5 × 32.3mm |
| Weather Sealed | Yes | No |
| Viewfinder | OVF 0.76× magnification, 100% coverage | None (optional EVF accessory) |
| Screen | 3.2" fully articulating touchscreen, 4.15M dots | 3.0" fixed touchscreen, 1.04M dots |
| Mount | Canon EF | Canon EF-M mount |
| Memory Cards | Dual CFexpress Type B slots | 1× SD/SDHC/SDXC |
| Connectivity | Wi-Fi 5GHz, Bluetooth 4.2, USB-C 3.1 Gen 2, Ethernet | USB 2.0 |
Suitability by genre
| Genre | EOS-1D X Mark III | EOS M |
|---|---|---|
| Sports & Action | — | |
| Wildlife | — | |
| Wedding & Events | — | |
| Portrait | ||
| Vlogging & Video | ||
| Street | ||
| Landscape | — | |
| Casual | — | |
| Travel | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
More comparisons with EOS-1D X Mark III
Camera family history