In depth comparison and review of Canon EOS 1D X Mark III and Sony Alpha7s III ILCE-7SM3. Compare design, sensors, proximity features, memory capacities and other important specifications and features to easily choose the right camera for you. Our goal is to help you uncover differences between the products and find the digital camera that will best fit your needs.
| DESIGN AND DIMENSIONS | Canon EOS 1D X Mark III | Sony Alpha7s III ILCE-7SM3 |
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| Product Type | Digital camera - 5.5K - SLR with Live View mode, movie recording | Digital camera - 4K - mirrorless system |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 16.76 cm | 9.69 cm |
| Width | 15.8 cm | 12.89 cm |
| Depth | 8.26 cm | 8.08 cm |
| Weight | 1.25 kg | 699 g |
| Weight Details | Camera body only: 1.25 kg Camera with battery and memory card: 1.44 kg |
Camera with battery and memory card: 699 g |
| Body Material | Magnesium alloy | Magnesium alloy |
| Protection | Weatherproof, dust-resistant | Dust-resistant, moisture-resistant |
| Digital Zoom | - | 4x |
| Navigation | GPS receiver | - |
| SENSOR | Canon EOS 1D X Mark III | Sony Alpha7s III ILCE-7SM3 |
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| Sensor Resolution | 20.1 Megapixel | 12.1 Megapixel |
|---|---|---|
| Optical Sensor Type | CMOS | Exmor R CMOS |
| Total Pixels | 21,400,000 pixels | 12,900,000 pixels |
| Effective Sensor Resolution | 20,100,000 pixels | 12,100,000 pixels |
| Optical Sensor Size | Full Frame (36 x 24 mm) | Full Frame (35.6 x 23.8 mm) |
| Frame Rate (Max Resolution) | 60 fps | 120 fps |
| Sensor Dust Reduction | Yes | Yes |
| Sensor Features | Self Cleaning Sensor Unit, High Detail Low Pass Filter | Dust Reduction (image sensor vibration), Anti-Dust coating |
| Image Stabiliser | - | Optical (5-axis Steady Shot) |
| Built-in Optical Image Stabiliser | - | Yes |
| Sensors | - | Digital level metre |
| PROCESSOR | Canon EOS 1D X Mark III | Sony Alpha7s III ILCE-7SM3 |
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| Image Processor | DIGIC X | BIONZ XR |
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| LENS | Canon EOS 1D X Mark III | Sony Alpha7s III ILCE-7SM3 |
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| Lens Mounting Type | Canon EF | Sony E-mount |
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| FOCUSING | Canon EOS 1D X Mark III | Sony Alpha7s III ILCE-7SM3 |
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| Auto Focus | Dual Pixel CMOS AF | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 191 | 759 |
| Auto Focus Features | Deep Learning technology | Focus Peaking function, Predictive Focus Control |
| AE/AF Control | Face-priority AF, Eye detection AF, Zone AF, AI Servo AF, Head Detection AF, Large Zone AF | Flex Focus Point, Face-priority AF, Subject-tracking AF, Eye detection AF |
| Face Detection | - | Face Recognition, face-priority AF function |
| VIEWFINDER | Canon EOS 1D X Mark III | Sony Alpha7s III ILCE-7SM3 |
|---|
| Viewfinder Type | Optical - fixed eye-level pentaprism | Built-in - electronic |
|---|---|---|
| Viewfinder Colour Support | - | Colour |
| Viewfinder Diagonal Size | - | 0.64" |
| Viewfinder Resolution | - | 9,437,184 pixels |
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 0.76x | 0.9x |
| Optical Viewfinder Dioptric Correction Range | -3 to +1 | -4 to +3 |
| Field of View Crop Factor | 1.0 | - |
| EXPOSURE & WHITE BALANCE | Canon EOS 1D X Mark III | Sony Alpha7s III ILCE-7SM3 |
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| ISO (Max) | 819200 | 409600 |
|---|---|---|
| Native ISO | 100-102400 | - |
| Extended ISO (Max) | 204800 (H1), 409600 (H2), 819200 (H3) | 409600 |
| Extended ISO (Min) | 50 | 40 |
| Light Sensitivity | ISO 50, ISO auto, ISO 100-102400, ISO 819200 | ISO 204800, ISO 409600, ISO 80-102400, ISO 40 |
| Exposure Metering | Evaluative, centre-weighted, spot (1.5%), partial (6.2%) | Multi-segment, centre-weighted, spot |
| Exposure Metering Zones | 216 | 1200 |
| Exposure Modes | Programme, bulb, manual, aperture-priority, shutter-priority, E-TTL II program flash | Bulb, automatic, manual, aperture-priority, shutter-priority |
| Bracketing Modes | - | Dynamic Range Bracketing |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Cloudy, tungsten light, Flash, daylight, shade, fluorescent light (white) | Incandescent, fluorescent, cloudy, Flash, daylight, shade, Underwater, 2500K - 9900K |
| Shutter Type | Mechanical electronically-controlled | 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 | 3, 5 or 9 steps |
| X-sync Speed | 1/250sec | 1/250sec |
| Exposure Range | EV 0-20 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Canon EOS 1D X Mark III | Sony Alpha7s III ILCE-7SM3 |
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| Type | 3.2" LCD display | 3" LCD display |
|---|---|---|
| Touch Screen | - | Yes |
| Display Format | 2,100,000 pixels | 1,440,000 pixels |
| Display Form Factor | Built-in | Folding |
| Display Features | Display brightness control | Display brightness control |
| VIDEOGRAPHY / CAMCORDER | Canon EOS 1D X Mark III | Sony Alpha7s III ILCE-7SM3 |
|---|
| Digital Video Format | H.264, RAW, H.265 | H.264, XAVC S, H.265, XAVC HS |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG, C-RAW, HEIF | JPEG, RAW, RAW + JPEG |
| Max Video Resolution | 5472 x 2886 | 3840 x 2160 |
| Audio Signal Format | - | AAC |
| Microphone Operation Mode | Mono | Stereo |
| MEMORY | Canon EOS 1D X Mark III | Sony Alpha7s III ILCE-7SM3 |
|---|
| Memory Card Slot | Dual CFexpress | Dual SD card, dual CFexpress |
|---|---|---|
| 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, CFexpress |
| Memory Card | 64 GB CFexpress | - |
| Memory Card Included | Yes | No |
| Image Storage | 5472 x 3648 4368 x 2912 3648 x 2432 2736 x 1824 |
JPEG 4240 x 2832 JPEG 2768 x 1848 JPEG 2128 x 1416 JPEG 1376 x 920 JPEG 3776 x 2832 JPEG 2464 x 1848 JPEG 1888 x 1416 JPEG 1232 x 920 JPEG 4240 x 2348 JPEG 2768 x 1550 JPEG 2128 x 1200 JPEG 1376 x 776 JPEG 2832 x 2832 JPEG 1840 x 1840 JPEG 1408 x 1408 JPEG 912 x 912 |
| Video Capture | RAW - 5472 x 2286 4096 x 2160 3840 x 2160 1920 x 1080 |
XAVC HS - 3840 x 2160 p - 120 fps XAVC HS - 3840 x 2160 p - 60 fps XAVC HS - 3840 x 2160 p - 100 fps - 200Mbps XAVC HS - 3840 x 2160 p - 50 fps XAVC HS - 3840 x 2160 p - 24 fps XAVC S - 3840 x 2160 p - 120 fps XAVC S - 3840 x 2160 p - 60 fps XAVC S - 3840 x 2160 p - 30 fps XAVC S - 3840 x 2160 p - 24 fps XAVC S - 3840 x 2160 p - 100 fps XAVC S - 3840 x 2160 p - 50 fps XAVC S - 3840 x 2160 p - 25 fps XAVC S HD - 1920 x 1080 p - 120 fps XAVC S HD - 1920 x 1080 p - 60 fps XAVC S HD - 1920 x 1080 p - 30 fps XAVC S HD - 1920 x 1080 p - 24 fps XAVC S HD - 1920 x 1080 p - 100 fps XAVC S HD - 1920 x 1080 p - 50 fps XAVC S HD - 1920 x 1080 p - 25 fps |
| BATTERY AND CHARGING | Canon EOS 1D X Mark III | Sony Alpha7s III ILCE-7SM3 |
|---|
| Battery Type | Canon LP-E19 Lithium Ion | Sony NP-FZ100 Lithium Ion |
|---|---|---|
| Details | Canon LP-E19 Li-ion rechargeable battery (included) | Sony NP-FZ100 Li-ion rechargeable battery - 2280 mAh (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 - 510 shots (EVF on) Photo shooting - 600 shots (LCD Monitor on) Video recording - 80 minutes (EVF on) Video recording - 135 minutes (LCD Monitor on) |
| CONNECTIONS | Canon EOS 1D X Mark III | Sony Alpha7s III ILCE-7SM3 |
|---|
| Interface | USB 3.1, Wireless LAN, Bluetooth | HDMI, USB-C, Wireless LAN, NFC (Near Field Communication), Bluetooth 5.0 |
|---|---|---|
| Connectivity Features | - | Remote control via mobile devices, Wireless Image Transfer, PC Remote functions via Wi-Fi |
| Print Standard | DPOF support, Exif Print support | Exif Print support, PRINT Image Matching |
| Flash Terminal | Hot shoe, PC terminal | Hot shoe |
| Connector Type | USB 3.1 Gen 2 (USB Type-C) Microphone (mini-phone stereo 3.5 mm) |
USB (USB Type-C) HDMI output (19 pin HDMI Type A) Microphone (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) |
| FEATURES | Canon EOS 1D X Mark III | Sony Alpha7s III ILCE-7SM3 |
|---|
| Self-Timer Delay | 10 sec, 2sec | 10 sec, 2sec, 5 sec |
|---|---|---|
| Continuous Shooting Speed | 8 frames per second, 3 frames per second, 20 frames per second, 10 frames per second, 16 frames per second | 8 frames per second, 3 frames per second, 10 frames per second, 6 frames per second |
| 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 | Built-in speaker, digital image rotation, camera orientation detection, histogram display, shadow point display, interval shooting mode, highlight point display, Dynamic Range Optimizer, USB charging, built-in help guide, Chromatic Aberration Compensation (CAC), HDR image enhancement technology, Intelligent AUTO (iAUTO), fast motion recording, Lens Distortion Compensation (LDC), noise reduction over long exposures, high ISO speed noise reduction, silent shooting, BRAVIA Sync function, PhotoTV HD, GPS via mobile, slow motion recording, peripheral shading correction, anti-flicker, Hybrid Log-Gamma (HLG) recording |
| OTHERS | Canon EOS 1D X Mark III | Sony Alpha7s III ILCE-7SM3 |
|---|
| Included Accessories | Body cap, neck strap, eyecup, interface cable, cable protector, dual battery charger | - |
|---|---|---|
| Max Operating Temperature | 45 °C | 40 °C |
| Min Operating Temperature | 0 °C | 0 °C |
| Service & Support | Limited warranty - 2 years | - |
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