EOS-1D X Mark IIIvs OM-3
Canon
EOS-1D X Mark III (2020)
Starting from £3500 new
Best for Professional Sports, Wildlife & Press Photography
View EOS-1D X Mark III
OM System
OM-3 (2024)
Starting from £999 new
Best for Travel, outdoor & adventure photography
View OM-3
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.
Travel, Outdoor & Adventure Photography — OM-3 (2024): The ideal mid-range OM System camera — weather sealed, class-leading IBIS, and superb computational features in a compact body.
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
OM-3 (2024)
- Outdoor and adventure photographers who need weather sealing and compact size
- Wildlife and bird photographers wanting improved AF over the OM-5
- Travel shooters who want a rugged, lightweight MFT system
- OM-5 or E-M5 III owners wanting better autofocus without going to the OM-1
Quick take: The om-3 has the highest resolution at 20mp; the om-3 is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS-1D X Mark III (2020) | OM-3 (2024) |
|---|---|---|
| Price | £3,500 | £999 |
| Sensor | 20.1MP full-frame CMOS | 20.4MP Live MOS Micro Four Thirds |
| Resolution | 20.1MP | 20.4MP |
| Video | 5.5K RAW, 4K 60fps (crop), 4K 60fps (full-frame via firmware) | 4K/60p (10-bit), C4K/30p, 1080p/120p |
| Autofocus | 191-point all cross-type OVF AF; 525-point Dual Pixel CMOS AF (Live View) | Phase-detect AF — subject recognition (human, animal, bird, vehicle) |
| Stabilisation | — | IBIS — up to 6.5 stops (7.5 stops with Sync IS lenses) |
| Burst Rate | 16fps mechanical, 20fps live view | 10fps mechanical, 30fps electronic with AF |
| Battery Life | ~2850 shots (CIPA) | ~400 shots (CIPA) |
| Weight | 1250g (body only) | 414g (with battery) |
| Dimensions | 158 × 167.6 × 82.6mm | 122.3 × 84.6 × 49.4mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | OVF 0.76× magnification, 100% coverage | EVF, 2.36M dots, 0.74× magnification |
| Screen | 3.2" fully articulating touchscreen, 4.15M dots | 3.0" fully articulating touchscreen |
| Mount | Canon EF | Micro Four Thirds |
| Memory Cards | Dual CFexpress Type B slots | Single SD UHS-II slot |
| Connectivity | Wi-Fi 5GHz, Bluetooth 4.2, USB-C 3.1 Gen 2, Ethernet | USB-C, Wi-Fi, Bluetooth |
Suitability by genre
| Genre | EOS-1D X Mark III | OM-3 |
|---|---|---|
| Sports & Action | — | |
| Wildlife | ||
| Wedding & Events | — | |
| Portrait | ||
| Vlogging & Video | ||
| Street | ||
| Landscape | ||
| 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