Side by side comparison and review of Canon EOS 1D X Mark III and Pentax K-3 Mark III. Compare design, sensors, zoom functions, batteries and other key specifications and features to simplify the choice of your perfect digital camera. Our goal is to make it easier for you to decide on the camera that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Canon EOS 1D X Mark III | Pentax K-3 Mark III |
|---|
| Product Type | Digital camera - 5.5K - SLR with Live View mode, movie recording | Digital camera - 4K - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 16.76 cm | 10.35 cm |
| Width | 15.8 cm | 13.45 cm |
| Depth | 8.26 cm | 7.35 cm |
| Weight | 1.25 kg | 735 g |
| Weight Details | Camera body only: 1.25 kg Camera with battery and memory card: 1.44 kg |
Camera body only: 735 g Camera with battery and memory card: 820 g |
| Body Material | Magnesium alloy | Magnesium alloy |
| Enclosure Colour | - | Black | Silver |
| Protection | Weatherproof, dust-resistant | Weatherproof, dust-resistant |
| Navigation | GPS receiver | GPS receiver |
| SENSOR | Canon EOS 1D X Mark III | Pentax K-3 Mark III |
|---|
| Sensor Resolution | 20.1 Megapixel | 25.73 Megapixel |
|---|---|---|
| Optical Sensor Type | CMOS | CMOS |
| Total Pixels | 21,400,000 pixels | 26,780,000 pixels |
| Effective Sensor Resolution | 20,100,000 pixels | 25,730,000 pixels |
| Optical Sensor Size | Full Frame (36 x 24 mm) | APS-C (23.3 x 15.5 mm) |
| Frame Rate (Max Resolution) | 60 fps | 30 fps |
| Sensor Dust Reduction | Yes | - |
| Sensor Features | Self Cleaning Sensor Unit, High Detail Low Pass Filter | Dust Reduction (image sensor vibration), anti-aliasing simulator function |
| Image Stabiliser | - | Optical SR II (5-axis image sensor shift mechanism) |
| Built-in Optical Image Stabiliser | - | Yes |
| Sensors | - | Digital level metre |
| PROCESSOR | Canon EOS 1D X Mark III | Pentax K-3 Mark III |
|---|
| Image Processor | DIGIC X | - |
|---|
| LENS | Canon EOS 1D X Mark III | Pentax K-3 Mark III |
|---|
| Lens Mounting Type | Canon EF | Pentax K |
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| FOCUSING | Canon EOS 1D X Mark III | Pentax K-3 Mark III |
|---|
| Auto Focus | Dual Pixel CMOS AF | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 191 | 101 |
| Auto Focus Features | Deep Learning technology | - |
| AE/AF Control | Face-priority AF, Eye detection AF, Zone AF, AI Servo AF, Head Detection AF, Large Zone AF | Auto-area AF, Zone AF, Expanded area AF |
| Face Detection | - | Yes |
| VIEWFINDER | Canon EOS 1D X Mark III | Pentax K-3 Mark III |
|---|
| Viewfinder Type | Optical - fixed eye-level pentaprism | Optical - fixed eye-level pentaprism |
|---|---|---|
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 0.76x | 1.05x |
| Optical Viewfinder Dioptric Correction Range | -3 to +1 | -4 to +1 |
| Field of View Crop Factor | 1.0 | - |
| Features | - | Auto eye sensor |
| EXPOSURE & WHITE BALANCE | Canon EOS 1D X Mark III | Pentax K-3 Mark III |
|---|
| ISO (Max) | 819200 | 1600000 |
|---|---|---|
| Native ISO | 100-102400 | - |
| Extended ISO (Max) | 204800 (H1), 409600 (H2), 819200 (H3) | - |
| Extended ISO (Min) | 50 | - |
| Light Sensitivity | ISO 50, ISO auto, ISO 100-102400, ISO 819200 | ISO auto, ISO 100-1600000 |
| Exposure Metering | Evaluative, centre-weighted, spot (1.5%), partial (6.2%) | Multi-segment, centre-weighted, spot, highlight-weighted |
| Exposure Metering Zones | 216 | - |
| Exposure Modes | Programme, bulb, manual, aperture-priority, shutter-priority, E-TTL II program flash | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority |
| Bracketing Modes | - | Depth of field bracketing, motion bracketing |
| Special Effects | - | Soft, Slim, fisheye, natural, bright, Vibrant, monochrome, Muted, Flat, landscape, portrait, miniature, Cross Process, Retro, Colour Extract, Toy camera, High contrast, Colour Invert, Bleach Bypass, Radiant, Reversal Film, Shading, Tone Expansion, Bold Monochrome, Unicolour Bold, Colour replace, Grainy Monochrome |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Cloudy, tungsten light, Flash, daylight, shade, fluorescent light (white) | Cloudy, tungsten light, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), Color Temperature Enhancement (CTE), fluorescent light (daylight white) |
| Shutter Type | Mechanical electronically-controlled | Electronic, mechanical electronically-controlled |
| Max Shutter Speed | 1/8000 sec | 1/8000 sec |
| Min Shutter Speed | 30 sec | 30 sec |
| Exposure Compensation | ±5 EV range, in 1/2 or 1/3 EV steps | ±5 EV range, in 1/2 or 1/3 EV steps |
| Auto Exposure Bracketing | 3 steps in 1/2 or 1/3 EV steps | - |
| X-sync Speed | 1/250sec | 1/200sec |
| Exposure Range | EV 0-20 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Canon EOS 1D X Mark III | Pentax K-3 Mark III |
|---|
| Type | 3.2" LCD display | 3.2" LCD display |
|---|---|---|
| Touch Screen | - | Yes |
| Display Format | 2,100,000 pixels | 1,620,000 pixels |
| Display Form Factor | Built-in | Built-in |
| Display Features | Display brightness control | Colour control, contrast control, display brightness control, night vision LCD display |
| VIDEOGRAPHY / CAMCORDER | Canon EOS 1D X Mark III | Pentax K-3 Mark III |
|---|
| Digital Video Format | H.264, RAW, H.265 | H.264, MOV |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG, C-RAW, HEIF | JPEG, DNG (RAW), PEF (RAW) |
| Max Video Resolution | 5472 x 2886 | 3840 x 2160 |
| Microphone Operation Mode | Mono | Stereo |
| Microphone Features | - | Wind noise reduction, sensitivity control |
| MEMORY | Canon EOS 1D X Mark III | Pentax K-3 Mark III |
|---|
| Memory Card Slot | Dual CFexpress | Dual SD card |
|---|---|---|
| Supported Memory Cards | CFexpress | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card, SDHC UHS-II Memory Card, SDXC UHS-II Memory Card |
| Memory Card | 64 GB CFexpress | - |
| Memory Card Included | Yes | No |
| Image Storage | 5472 x 3648 4368 x 2912 3648 x 2432 2736 x 1824 |
RAW 6192 x 4128 JPEG 6192 x 4128 JPEG 4752 x 3168 JPEG 3648 x 2432 JPEG 1920 x 1280 |
| Video Capture | RAW - 5472 x 2286 4096 x 2160 3840 x 2160 1920 x 1080 |
H.264 - 3840 x 2160 p - 30 fps H.264 - 3840 x 2160 p - 24 fps H.264 - 1920 x 1080 p - 60 fps H.264 - 1920 x 1080 p - 30 fps H.264 - 1920 x 1080 p - 24 fps |
| BATTERY AND CHARGING | Canon EOS 1D X Mark III | Pentax K-3 Mark III |
|---|
| Battery Type | Canon LP-E19 Lithium Ion | Pentax D-Li90 Lithium Ion |
|---|---|---|
| Details | Canon LP-E19 Li-ion rechargeable battery (included) | Pentax D-Li90 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 2850 shots (at 23 °C (LCD Monitor off)) Photo shooting - 2360 shots (at 0 °C (LCD Monitor off)) Photo shooting - 610 shots (at 23 °C (Live View mode)) Photo shooting - 530 shots (at 0 °C (Live View mode)) |
Photo shooting - 800 shots Playback - 250 minutes |
| CONNECTIONS | Canon EOS 1D X Mark III | Pentax K-3 Mark III |
|---|
| Interface | USB 3.1, Wireless LAN, Bluetooth | HDMI, USB-C, IEEE 802.11b/g/n, Bluetooth 4.2 |
|---|---|---|
| Connectivity Features | - | Remote control via mobile devices, remote live view, Wireless Image Transfer |
| Print Standard | DPOF support, Exif Print support | Exif Print support |
| Computer Connectivity | - | Mac, Windows |
| Flash Terminal | Hot shoe, PC terminal | Hot shoe, PC terminal |
| Connector Type | USB 3.1 Gen 2 (USB Type-C) Microphone (mini-phone stereo 3.5 mm) |
USB 3.2 Gen 1 (USB Type-C) HDMI output (19 pin micro HDMI Type D) Microphone (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) Remote control (sub-mini phone 2.5 mm) |
| FEATURES | Canon EOS 1D X Mark III | Pentax K-3 Mark III |
|---|
| Self-Timer Delay | 10 sec, 2sec | 2sec, 12sec |
|---|---|---|
| Continuous Shooting Speed | 8 frames per second, 3 frames per second, 20 frames per second, 10 frames per second, 16 frames per second | 2.5 frames per second, 12 frames per second, 7 frames per second |
| HDR Mode | - | Auto HDR mode |
| Additional Features | Audio recording, RGB primary colour filter, auto power save, depth-of-field preview button, histogram display, AE lock, AF lock, FE lock, highlight point display, Dust Delete Data system, in-camera RAW processing | Audio recording, date/time stamp, digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, cropping an image, resizing an image, interval shooting mode, in-camera film editing, in-camera RAW processing, peripheral illumination correction, horizon correction, NR Slow Shutter, High ISO NR, Lens Distortion Correction, primary colour filter, Automatic composition correction function, colour moire correction, Lateral Chromatic Aberration Correction, diffraction correction, Pixel Shift Resolution technology, colour fringe correction, multiple exposure capture, GPS stamp, D-range correction |
| OTHERS | Canon EOS 1D X Mark III | Pentax K-3 Mark III |
|---|
| Included Accessories | Body cap, neck strap, eyecup, interface cable, cable protector, dual battery charger | Eyepiece cover, carrying strap, battery charger, body cap, USB cable, eyecup, shoe cap, sync terminal cover |
|---|---|---|
| Software | - | Digital Camera Utility 5 |
| Max Operating Temperature | 45 °C | 40 °C |
| Min Operating Temperature | 0 °C | -10 °C |
| Service & Support | Limited warranty - 2 years | Limited warranty - 1 year |
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