In depth comparison and review of Sony Alpha7s III ILCE-7SM3 and Canon EOS R3. 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 | Sony Alpha7s III ILCE-7SM3 | Canon EOS R3 |
|---|
| Product Type | Digital camera - 4K - mirrorless system | Digital camera - 6K - mirrorless system with Live View mode, movie recording |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 9.69 cm | 14.26 cm |
| Width | 12.89 cm | 15 cm |
| Depth | 8.08 cm | 8.72 cm |
| Weight | 699 g | 822 g |
| Weight Details | Camera with battery and memory card: 699 g | Camera body only: 822 g Camera with battery and memory card: 1.015 kg |
| Body Material | Magnesium alloy | Magnesium alloy, fibreglass-reinforced polycarbonate |
| Protection | Dust-resistant, moisture-resistant | Dust-resistant, slash-resistant |
| Digital Zoom | 4x | - |
| Navigation | - | GPS/GLONASS/QZSS receiver |
| SENSOR | Sony Alpha7s III ILCE-7SM3 | Canon EOS R3 |
|---|
| Sensor Resolution | 12.1 Megapixel | 24.1 Megapixel |
|---|---|---|
| Optical Sensor Type | Exmor R CMOS | BSI-CMOS |
| Total Pixels | 12,900,000 pixels | 24,100,000 pixels |
| Effective Sensor Resolution | 12,100,000 pixels | 26,700,000 pixels |
| Optical Sensor Size | Full Frame (35.6 x 23.8 mm) | Full Frame (36 x 24 mm) |
| Frame Rate (Max Resolution) | 120 fps | 60 fps |
| Sensor Dust Reduction | Yes | Yes |
| Sensor Features | Dust Reduction (image sensor vibration), Anti-Dust coating | Self Cleaning Sensor Unit |
| Image Stabiliser | Optical (5-axis Steady Shot) | Optical (5-axis image sensor shift mechanism) |
| Built-in Optical Image Stabiliser | Yes | Yes |
| Sensors | Digital level metre | - |
| PROCESSOR | Sony Alpha7s III ILCE-7SM3 | Canon EOS R3 |
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| Image Processor | BIONZ XR | DIGIC X |
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| LENS | Sony Alpha7s III ILCE-7SM3 | Canon EOS R3 |
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| Lens Mounting Type | Sony E-mount | Canon RF |
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| FOCUSING | Sony Alpha7s III ILCE-7SM3 | Canon EOS R3 |
|---|
| Auto Focus | TTL contrast and phase detection | Dual Pixel CMOS AF II |
|---|---|---|
| Auto Focus Points (Zones) Qty | 759 | 1053 |
| Auto Focus Features | Focus Peaking function, Predictive Focus Control | - |
| AE/AF Control | Flex Focus Point, Face-priority AF, Subject-tracking AF, Eye detection AF | Eye Control, Face-priority AF, Subject-tracking AF, Eye detection AF, Zone AF, Animal-tracking AF, Vehicle-tracking AF |
| Face Detection | Face Recognition, face-priority AF function | Eye Detect AF, Face Detection AF/AE |
| VIEWFINDER | Sony Alpha7s III ILCE-7SM3 | Canon EOS R3 |
|---|
| Viewfinder Type | Built-in - electronic | Electronic - OLED |
|---|---|---|
| Viewfinder Colour Support | Colour | Colour |
| Viewfinder Diagonal Size | 0.64" | 0.5" |
| Viewfinder Resolution | 9,437,184 pixels | 5,760,000 pixels |
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 0.9x | 0.76x |
| Optical Viewfinder Dioptric Correction Range | -4 to +3 | -4 to +2 |
| Field of View Crop Factor | - | 1.0 |
| EXPOSURE & WHITE BALANCE | Sony Alpha7s III ILCE-7SM3 | Canon EOS R3 |
|---|
| ISO (Max) | 409600 | 204800 |
|---|---|---|
| Native ISO | - | 100-102400 |
| Extended ISO (Max) | 409600 | 204800 |
| Extended ISO (Min) | 40 | 50 |
| Light Sensitivity | ISO 204800, ISO 409600, ISO 80-102400, ISO 40 | ISO 50, ISO auto, ISO 204800, ISO 100-102400 |
| Exposure Metering | Multi-segment, centre-weighted, spot | Evaluative, centre-weighted, spot (2.9%), partial (5.9%) |
| Exposure Metering Zones | 1200 | 384 |
| Exposure Modes | Bulb, automatic, manual, aperture-priority, shutter-priority | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, flexible-priority AE |
| Bracketing Modes | Dynamic Range Bracketing | Focus bracketing |
| Special Effects | - | Neutral, Faithful, monochrome, landscape, portrait, Standard, Fine Detail |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Incandescent, fluorescent, cloudy, Flash, daylight, shade, Underwater, 2500K - 9900K | Cloudy, tungsten light, Flash, daylight, shade, 2500K - 10000K, fluorescent light (white) |
| Shutter Type | Mechanical electronically-controlled | Mechanical, electronic |
| Max Shutter Speed | 1/8000 sec | 1/64000 sec |
| Min Shutter Speed | 30 sec | 30 sec |
| Exposure Compensation | ±5 EV range, in 1/2 or 1/3 EV steps | ±3 EV range, in 1/2 or 1/3 EV steps |
| Auto Exposure Bracketing | 3, 5 or 9 steps | 3 steps in 1/2 or 1/3 EV steps |
| X-sync Speed | 1/250sec | 1/200sec, 1/180 sec, 1/250sec |
| Exposure Range | EV -3-20 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Sony Alpha7s III ILCE-7SM3 | Canon EOS R3 |
|---|
| Type | 3" LCD display | 3.2" LCD display |
|---|---|---|
| Touch Screen | Yes | - |
| Display Format | 1,440,000 pixels | 4,150,000 pixels |
| Display Form Factor | Folding | Rotating |
| Display Features | Display brightness control | Display brightness control, anti-smudge coating |
| VIDEOGRAPHY / CAMCORDER | Sony Alpha7s III ILCE-7SM3 | Canon EOS R3 |
|---|
| Digital Video Format | H.264, XAVC S, H.265, XAVC HS | MOV, RAW, IPB, ALL-I |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG | JPEG, RAW, RAW + JPEG, C-RAW, HEIF, RAW + HEIF |
| Max Video Resolution | 3840 x 2160 | 6000 x 3164 |
| Audio Signal Format | AAC | - |
| Microphone Operation Mode | Stereo | Mono |
| MEMORY | Sony Alpha7s III ILCE-7SM3 | Canon EOS R3 |
|---|
| Memory Card Slot | Dual SD card, dual CFexpress | SD card, CFexpress |
|---|---|---|
| Supported Memory Cards | 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 | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-II Memory Card, SDXC UHS-II Memory Card, CFexpress |
| Memory Card Included | No | No |
| Image Storage | 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 |
6000 x 4000 3984 x 2656 2976 x 1984 2400 x 1600 3744 x 2496 2400 x 1600 5328 x 4000 3552 x 2664 2656 x 1992 2112 x 1600 6000 x 3368 3984 x 2240 2976 x 1680 2400 x 1344 4000 x 4000 2656 x 2656 1984 x 1984 1600 x 1600 |
| Video Capture | 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 |
RAW - 6000 x 3164 p 4096 x 2160 p 3840 x 2160 p 1920 x 1080 p |
| BATTERY AND CHARGING | Sony Alpha7s III ILCE-7SM3 | Canon EOS R3 |
|---|
| Battery Type | Sony NP-FZ100 Lithium Ion | Canon LP-E19 Lithium Ion |
|---|---|---|
| Details | Sony NP-FZ100 Li-ion rechargeable battery - 2280 mAh (included) | Canon LP-E19 Li-ion rechargeable battery (included) |
| Battery Life | 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) |
Photo shooting - 620 shots (Power Save LVF Shooting mode) Photo shooting - 860 shots (Power Save LCD Shooting mode) Photo shooting - 440 shots (EVF on) Photo shooting - 760 shots (LCD Monitor on) |
| CONNECTIONS | Sony Alpha7s III ILCE-7SM3 | Canon EOS R3 |
|---|
| Interface | HDMI, USB-C, Wireless LAN, NFC (Near Field Communication), Bluetooth 5.0 | HDMI, USB-C, IEEE 802.11a/b/g/n/ac, Bluetooth 5.0 |
|---|---|---|
| Connectivity Features | Remote control via mobile devices, Wireless Image Transfer, PC Remote functions via Wi-Fi | Remote control via mobile devices, remote live view, Wireless Image Transfer, wireless video upload to cloud server, wireless image upload to cloud server, wireless image printing |
| Print Standard | Exif Print support, PRINT Image Matching | DPOF support, Exif Print support |
| Computer Connectivity | - | Mac, Windows |
| Flash Terminal | Hot shoe | Hot shoe |
| Connector Type | 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) |
USB 3.2 Gen 2 (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) Network (RJ-45) |
| FEATURES | Sony Alpha7s III ILCE-7SM3 | Canon EOS R3 |
|---|
| Self-Timer Delay | 10 sec, 2sec, 5 sec | 10 sec, 2sec |
|---|---|---|
| Continuous Shooting Speed | 8 frames per second, 3 frames per second, 10 frames per second, 6 frames per second | 30 frames per second, 12 frames per second |
| Additional Features | 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 | RGB primary colour filter, auto power save, depth-of-field preview button, camera orientation detection, histogram display, AE lock, AF lock, cropping an image, resizing an image, highlight point display, Dust Delete Data system, USB charging, in-camera RAW processing, Multi-Frame Noise Reduction, HDR image enhancement technology, high-speed recording, silent shooting, slow motion recording, multiple exposure capture, anti-flicker, double slot recording, Flickering Reduction function, firmware upgradable, assignable buttons, HEIF to Jpeg conversion, voice memo recording |
| OTHERS | Sony Alpha7s III ILCE-7SM3 | Canon EOS R3 |
|---|
| Included Accessories | - | Battery charger, body cap, neck strap, eyecup, cable protector, hot shoe cover, USB-C cable |
|---|---|---|
| Software | - | Canon Picture Style Editor, Canon Digital Photo Professional 4.15, Canon EOS Utility 3, WFT Utility, EOS Lens Registration Tool, EOS Web Service Registration Tool, Canon Camera connect app, Mobile File Transfer app |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | 0 °C | 0 °C |
| Service & Support | - | Limited warranty - 1 year |
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