EOS-1D X Mark IIIvs EOS M3vs EOS M50
Canon
EOS-1D X Mark III (2020)
Starting from £3500 new
Best for Professional Sports, Wildlife & Press Photography
View EOS-1D X Mark III
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.
Casual & Everyday — EOS M3 (2015): The EOS M3 was a meaningful upgrade over the original EOS M — bringing 24MP, a tilting touchscreen, and improved Hybrid CMOS AF III. Video tops out at 1080p/30p and burst shooting is modest, but for stills photographers wanting affordable APS-C quality, the M3 is a competent used-market option.
Casual & Vlogging — EOS M50 (2018): The EOS M50 is the most complete-feeling entry-level EF-M camera — built-in EVF, fully articulating screen, Dual Pixel AF, and a well-designed compact body. Its 4K video carries a significant crop and loses Dual Pixel AF, making 1080p the practical option — but for stills and casual video, it remains an excellent used-market buy.
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 M3 (2015)
- Photographers who want affordable 24MP APS-C quality on a budget
- Casual shooters who want a compact EF-M camera with a tilting screen
- Users looking for an affordable entry into the Canon EF-M ecosystem
- Used-market buyers wanting a capable but inexpensive mirrorless
EOS M50 (2018)
- Beginner photographers who want an EVF in a compact mirrorless
- Vloggers who want face-tracking AF and a flip screen
- Students stepping up to their first mirrorless camera
- Used-market shoppers wanting a well-rounded EF-M package
Quick take: The eos m3 has the highest resolution at 24mp; the eos m3 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 M3 (2015) | EOS M50 (2018) |
|---|---|---|---|
| Price | £3,500 | £150 | £350 |
| Sensor | 20.1MP full-frame CMOS | 24.2MP APS-C CMOS | 24.1MP APS-C CMOS (Dual Pixel) |
| Resolution | 20.1MP | 24.2MP | 24.1MP |
| Video | 5.5K RAW, 4K 60fps (crop), 4K 60fps (full-frame via firmware) | 1080p/30p | 4K/24p (crop, no Dual Pixel AF), 1080p/60p |
| Autofocus | 191-point all cross-type OVF AF; 525-point Dual Pixel CMOS AF (Live View) | Hybrid CMOS AF III (phase-detect + contrast-detect) | Dual Pixel CMOS AF with face and subject detection |
| Burst Rate | 16fps mechanical, 20fps live view | 4.2fps | 10fps |
| Battery Life | ~2850 shots (CIPA) | ~250 shots (CIPA) | ~235 shots (CIPA) |
| Weight | 1250g (body only) | 366g (body only) | 387g (body only) |
| Dimensions | 158 × 167.6 × 82.6mm | 110.9 × 68.0 × 44.4mm | 116.3 × 88.1 × 58.7mm |
| Weather Sealed | Yes | No | No |
| Viewfinder | OVF 0.76× magnification, 100% coverage | None (optional EVF-DC1 accessory) | Electronic, 2.36M dots, 0.39" type |
| Screen | 3.2" fully articulating touchscreen, 4.15M dots | 3.0" tilting touchscreen, 1.04M dots | 3.0" fully articulating touchscreen, 1.04M dots |
| Mount | Canon EF | Canon EF-M mount | Canon EF-M mount |
| Memory Cards | Dual CFexpress Type B slots | Single SD UHS-I slot | Single SD UHS-I slot |
| Connectivity | Wi-Fi 5GHz, Bluetooth 4.2, USB-C 3.1 Gen 2, Ethernet | USB, Wi-Fi, NFC | Micro USB, Wi-Fi, Bluetooth, NFC |
Suitability by genre
| Genre | EOS-1D X Mark III | EOS M3 | EOS M50 |
|---|---|---|---|
| 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 →
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Camera family history