Canon EOS-1D X Mark III vs Canon EOS R3
Compare key differences and full specifications to find the camera that suits your photography.
Key differences
- Year: Canon EOS-1D X Mark III: 2020 ; Canon EOS R3: 2021
- Weight: Canon EOS-1D X Mark III: 1440 g ; Canon EOS R3: 1015 g
- Sensor resolution: Canon EOS-1D X Mark III: 5492 x 3661 ; Canon EOS R3: 6012 x 4008
- Effective megapixels: Canon EOS-1D X Mark III: 20.1 ; Canon EOS R3: 24.1
- Max. video mode: Canon EOS-1D X Mark III: 5472x2286 (60p/50p/30p/25p/24p) ; Canon EOS R3: 6K RAW 60p (6000 x 3164)
- Battery: Canon EOS-1D X Mark III: LP-E19 lithium-ion battery ; Canon EOS R3: Rechargeable Li-ion Battery LP-E19
Best for
Larger prints and more cropping detail: Canon EOS R3 (24.1).
| Specification | Canon EOS-1D X Mark III | Canon EOS R3 |
|---|---|---|
| General | ||
| Brand | Canon | Canon |
| Model | EOS-1D X Mark III | EOS R3 |
| Year | 2020 | 2021 |
| Body | ||
| Dimensions | 158 x 167.6 x 82.6 mm | 150 x 142.6 x 87.2 mm |
| Weight | 1440 g | 1015 g |
| Sensor | ||
| Sensor type | CMOS | CMOS |
| Sensor size | 36 x 24 mm | 36 x 24 mm |
| Sensor resolution | 5492 x 3661 | 6012 x 4008 |
| Crop factor | 1.0 | 1.0 |
| Total megapixels | 21.4 | 26.7 |
| Effective megapixels | 20.1 | 24.1 |
| Image | ||
| Max. image resolution | 5472 x 3648 | 6000 x 4000 |
| ISO | Auto, 100-102400 (expandable to 50-819200) | Auto, 100-102400 (extends to 50-204800) |
| Exposure & Shutter | ||
| Min. shutter speed | 30 sec | 30 sec |
| Max. shutter speed | 1/8000 sec | 1/8000 sec |
| Metering | Multi, Center-weighted, Spot, Partial | Multi, Center-weighted, Spot, Partial |
| Exposure compensation | ±5 EV (in 1/3 EV, 1/2 EV steps) | ±3 EV (in 1/3 EV, 1/2 EV steps) |
| Aperture priority | Yes | Yes |
| Shutter priority | Yes | Yes |
| White balance presets | 7.0 | 6.0 |
| Autofocus & Drive | ||
| Autofocus type | — | Dual Pixel CMOS AF |
| AF points | — | 4,779 selectable positions (stills) |
| Max burst (electronic shutter) | — | 30 fps (195 fps in custom high-speed mode) |
| Max burst (mechanical shutter) | — | 12 fps (mechanical / electronic first curtain) |
| Stabilization | ||
| In-body stabilization (IBIS) | — | Yes |
| Video | ||
| Max. video mode | 5472x2286 (60p/50p/30p/25p/24p) | 6K RAW 60p (6000 x 3164) |
| Display & Viewfinder | ||
| Screen size | 3.2" | 3.2" |
| Screen resolution | 2,100,000 dots | 4,150,000 dots |
| Viewfinder | Optical (pentaprism) | Electronic |
| Storage & Connectivity | ||
| Storage types | CFexpress type B | SD/SDHC/SDXC/UHS-II/CFexpress Type B |
| USB | USB 3.0 (5 GBit/sec) | USB 3.0 (5 GBit/sec) |
| Power | ||
| Battery | LP-E19 lithium-ion battery | Rechargeable Li-ion Battery LP-E19 |
| CIPA rated shots (EVF) | — | 620 shots |
| CIPA rated shots (LCD) | — | 860 shots |