Detailed comparison and review of Sony Alpha7R III ILCE-7RM3 and Canon EOS 850D. With our comprehensive overview, you can simply compare design, sensors, proximity characteristics, memory capacities, but also other key features of both cameras and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the camera that best fits your needs and expectations.
| DESIGN AND DIMENSIONS | Sony Alpha7R III ILCE-7RM3 | Canon EOS 850D |
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| Product Type | Digital camera - 4K - mirrorless system | Digital camera - 4K - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 9.56 cm | 10.26 cm |
| Width | 12.69 cm | 13.1 cm |
| Depth | 7.37 cm | 7.62 cm |
| Weight | 572 g | 471 g |
| Weight Details | Camera body only: 572 g Camera with battery and memory card: 675 g |
Camera body only: 471 g Camera with battery and memory card: 515 g |
| Body Material | Magnesium alloy | Aluminium alloy, fibreglass-reinforced polycarbonate resin |
| Enclosure Colour | Black | Black |
| Protection | Dust-resistant, moisture-resistant | - |
| Digital Zoom | 4x | - |
| SENSOR | Sony Alpha7R III ILCE-7RM3 | Canon EOS 850D |
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| Sensor Resolution | 42.4 Megapixel | 24.1 Megapixel |
|---|---|---|
| Optical Sensor Type | Exmor R CMOS | CMOS |
| Total Pixels | 43,600,000 pixels | 25,800,000 pixels |
| Effective Sensor Resolution | 42,400,000 pixels | 24,100,000 pixels |
| Optical Sensor Size | Full Frame (35.9 x 24 mm) | APS-C (22.3 x 14.9 mm) |
| Frame Rate (Max Resolution) | 30 fps | 30 fps |
| Sensor Dust Reduction | Yes | Yes |
| Sensor Features | Dust Reduction (image sensor vibration), Anti-Dust coating | EOS Integrated Cleaning System, Self Cleaning Sensor Unit |
| Image Stabiliser | Optical (5-axis Steady Shot) | Electronic (5-axis) |
| Built-in Optical Image Stabiliser | Yes | - |
| Sensors | Digital level metre | Digital level metre |
| PROCESSOR | Sony Alpha7R III ILCE-7RM3 | Canon EOS 850D |
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| Image Processor | BIONZ X | DIGIC 8 |
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| LENS | Sony Alpha7R III ILCE-7RM3 | Canon EOS 850D |
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| Lens Mounting Type | Sony E-mount | Canon EF/EF-S |
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| FOCUSING | Sony Alpha7R III ILCE-7RM3 | Canon EOS 850D |
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| Auto Focus | TTL contrast and phase detection | Dual Pixel CMOS AF / TTL phase detection / TTL contrast detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 399 | 45 |
| Auto Focus Features | Focus Peaking function, Predictive Focus Control | Focus Peaking function, Manual Focus Assist |
| AE/AF Control | Flex Focus Point, Eye detection AF, Zone AF | Eye detection AF, Zone AF, AI Focus AF, AI Servo AF, Large Zone AF |
| Face Detection | Eye Detect AF, face-priority AF function | Yes |
| VIEWFINDER | Sony Alpha7R III ILCE-7RM3 | Canon EOS 850D |
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| Viewfinder Type | Electronic - OLED | Optical - fixed eye-level pentamirror |
|---|---|---|
| Viewfinder Colour Support | Colour | - |
| Viewfinder Diagonal Size | 0.5" | - |
| Viewfinder Resolution | 3,686,400 pixels | - |
| Optical Viewfinder Field Coverage | 100% | 95% |
| Optical Viewfinder Magnification | 0.78x | 0.82x |
| Optical Viewfinder Dioptric Correction Range | -4 to +3 | -3 to +1 |
| Viewfinder Information | - | Grid, electronic level, flicker detection, aspect ratio line, spot metering circle |
| Field of View Crop Factor | - | 1.6 |
| Features | Viewfinder brightness control, colour temperature control | - |
| EXPOSURE & WHITE BALANCE | Sony Alpha7R III ILCE-7RM3 | Canon EOS 850D |
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| ISO (Max) | 102400 | 25600 |
|---|---|---|
| Native ISO | - | 100-25600 |
| Extended ISO (Max) | - | 51200 |
| Light Sensitivity | ISO 50, ISO 102400, ISO auto (100-12800), ISO 100-32000 | ISO 51200, ISO 100-25600, ISO auto (100-25600) |
| Exposure Metering | Multi-segment, centre-weighted, spot | Evaluative, partial (6.5%), centre-weighted, spot (2%) |
| Exposure Metering Zones | 1200 | 216 |
| Exposure Modes | Bulb, automatic, manual, aperture-priority, shutter-priority | Programme, bulb, automatic, manual, aperture-priority, shutter-priority |
| Bracketing Modes | Dynamic Range Bracketing, white balance bracketing | Flash Exposure Bracketing, white balance bracketing |
| Shooting Programs | - | Landscape, portrait mode, close-up, night portrait, food, sports mode, candle, kids, backlight correction HDR, smooth skin, handheld night scene, group photo |
| Special Effects | Black & White, Sepia, Neutral, Vivid, sunset, landscape, portrait, clear, deep, light, autumn leaves, Retro, partial colour, Toy camera, Posterisation, High contrast monochrome, Pop Colour, Soft High-key, Night Scene, Standard, Style Box, Posterisation (B/W) | Neutral, fisheye, soft focus, Faithful, monochrome, landscape, portrait, miniature, Toy camera, HDR Art, Grainy B&W, Water painting, Fine Detail |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Incandescent, cloudy, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), Underwater, 2500K - 9900K, fluorescent light (daylight white) | Cloudy, tungsten light, Flash, daylight, 2000K - 10000K, fluorescent light (white) |
| Shutter Type | - | Mechanical electronically-controlled |
| Max Shutter Speed | 1/8000 sec | 1/4000 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, 5, 9 steps in 1/3, 1/2, 2/3, 1, 2 or 3 EV steps | 3 steps in 1/2 or 1/3 EV steps |
| White Balance Bracketing | Yes | - |
| X-sync Speed | 1/250sec | 1/200sec |
| Exposure Range | EV -3-20 (ISO 100) | EV 1-20 (ISO 100) |
| DISPLAY | Sony Alpha7R III ILCE-7RM3 | Canon EOS 850D |
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| Type | 3" LCD display | 3" LCD display |
|---|---|---|
| Touch Screen | Yes | Yes |
| Display Format | 1,440,000 pixels | 1,040,000 pixels |
| Display Form Factor | Folding | Rotating |
| Display Features | Display brightness control, Peaking AF display, Touch AF | Display brightness control |
| FLASH | Sony Alpha7R III ILCE-7RM3 | Canon EOS 850D |
|---|
| Camera Flash | - | Pop-up flash |
|---|---|---|
| Guide Number (m / ISO 100) | - | 12 |
| Flash Modes | - | Fill-in mode, auto mode |
| Red-Eye Reduction | - | Yes |
| Features | AF illuminator | AF illuminator, wireless off-camera control |
| VIDEOGRAPHY / CAMCORDER | Sony Alpha7R III ILCE-7RM3 | Canon EOS 850D |
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| Digital Video Format | AVCHD, XAVC S | H.264 |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG | JPEG, RAW + JPEG, C-RAW |
| Max Video Resolution | 3840 x 2160 | 3840 x 2160 |
| Audio Signal Format | Dolby Digital AC-3 (2 channel), Linear PCM | AAC |
| Microphone Operation Mode | Stereo | - |
| MEMORY | Sony Alpha7R III ILCE-7RM3 | Canon EOS 850D |
|---|
| Memory Card Slot | Memory Stick PRO Duo card, SD card | SD card |
|---|---|---|
| Supported Memory Cards | SD Memory Card, Memory Stick PRO Duo, SDXC Memory Card, SDHC Memory Card, Memory Stick PRO-HG Duo, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card, SDHC UHS-II Memory Card, SDXC UHS-II Memory Card | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card |
| Memory Card Included | No | No |
| Image Storage | 7952 x 5304 7952 x 4472 5168 x 3448 5168 x 2912 3984 x 2656 3984 x 2240 2592 x 1728 2592 x 1456 |
RAW 6000 x 4000 JPEG 6000 x 4000 JPEG 3984 x 2656 JPEG 2976 x 1984 JPEG 2400 x 1600 JPEG 5328 x 4000 JPEG 3552 x 2664 JPEG 2656 x 1992 JPEG 2112 x 1600 JPEG 6000 x 3368 JPEG 3984 x 2240 JPEG 2976 x 1680 JPEG 2400 x 1344 JPEG 4000 x 4000 JPEG 2656 x 2656 JPEG 1984 x 1984 JPEG 1600 x 1600 |
| Video Capture | AVCHD - 1920 x 1080 i - 60 fps - 24Mbps AVCHD - 1920 x 1080 i - 60 fps - 17Mbps AVCHD - 1920 x 1080 i - 50 fps - 24Mbps AVCHD - 1920 x 1080 i - 50 fps - 17Mbps XAVC S - 3840 x 2160 p - 30 fps - 100Mbps XAVC S - 3840 x 2160 p - 24 fps - 100Mbps XAVC S - 3840 x 2160 p - 30 fps - 60Mbps XAVC S - 3840 x 2160 p - 24 fps - 60Mbps XAVC S - 1920 x 1080 p - 60 fps - 100Mbps XAVC S - 1920 x 1080 p - 120 fps - 60Mbps XAVC S - 1920 x 1080 p - 60 fps - 50Mbps XAVC S - 1920 x 1080 p - 30 fps - 50Mbps XAVC S - 1920 x 1080 p - 24 fps - 50Mbps XAVC S - 1920 x 1080 p - 60 fps - 25Mbps XAVC S - 1920 x 1080 p - 30 fps - 16Mbps XAVC S - 3840 x 2160 p - 25 fps - 100Mbps XAVC S - 3840 x 2160 p - 25 fps - 60Mbps XAVC S - 1920 x 1080 p - 100 fps - 100Mbps XAVC S - 1920 x 1080 p - 100 fps - 60Mbps XAVC S - 1920 x 1080 p - 50 fps - 50Mbps XAVC S - 1920 x 1080 p - 25 fps - 50Mbps XAVC S - 1920 x 1080 p - 50 fps - 25Mbps XAVC S - 1920 x 1080 p - 25 fps - 16Mbps |
H.264 - 3840 x 2160 p - 29.97 fps H.264 - 3840 x 2160 p - 25 fps H.264 - 3840 x 2160 p - 24 fps H.264 - 1920 x 1080 p - 59.94 fps H.264 - 1920 x 1080 p - 50 fps H.264 - 1920 x 1080 p - 29.97 fps H.264 - 1920 x 1080 p - 23.98 fps H.264 - 1280 x 720 p - 59.94 fps H.264 - 1280 x 720 p - 50 fps |
| BATTERY AND CHARGING | Sony Alpha7R III ILCE-7RM3 | Canon EOS 850D |
|---|
| Battery Type | Sony NP-FZ100 Lithium Ion | Canon LP-E17 Lithium Ion |
|---|---|---|
| Details | Sony NP-FZ100 Li-ion rechargeable battery - 2280 mAh (included) | Canon LP-E17 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 650 shots (LCD Monitor on) Photo shooting - 530 shots (EVF on) Video recording - 1.92 hours (LCD Monitor on) Video recording - 1.67 hours (EVF on) |
Photo shooting - 800 shots (at 23 °C (LCD Monitor off)) Photo shooting - 730 shots (at 0 °C (LCD Monitor off)) Photo shooting - 310 shots (at 23 °C (Live View mode)) Photo shooting - 290 shots (at 0 °C (Live View mode)) |
| CONNECTIONS | Sony Alpha7R III ILCE-7RM3 | Canon EOS 850D |
|---|
| Interface | HDMI, USB 2.0, USB-C, IEEE 802.11b/g/n, NFC (Near Field Communication), Bluetooth 4.1 | HDMI, USB 2.0, IEEE 802.11b/g/n, Bluetooth 4.1 |
|---|---|---|
| Connectivity Features | Remote live view | Remote control via mobile devices, Wireless Image Transfer |
| Print Standard | DPOF support, Exif Print support, PRINT Image Matching | Direct print, DPOF support, Exif Print support, PictBridge support |
| Tripod Mount Connection Point | - | 1/4" socket |
| Flash Terminal | Hot shoe, PC terminal | Hot shoe |
| Connector Type | USB 2.0 (5 pin Micro-USB Type B) USB 3.1 (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) |
USB / AV output Microphone (mini-phone stereo 3.5 mm) HDMI output (19 pin mini HDMI Type C) |
| FEATURES | Sony Alpha7R III ILCE-7RM3 | Canon EOS 850D |
|---|
| 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 | 7.5 frames per second, 7 frames per second |
| HDR Mode | HDR Movie mode | - |
| Additional Features | Built-in speaker, sharpness control, camera orientation detection, histogram display, saturation control, contrast control, Dynamic Range Optimizer, USB charging, built-in help guide, Dolby Digital Stereo Creator, x.v.Colour technology, HDR image enhancement technology, Clear Image Zoom, noise reduction over long exposures, Lens Distortion Correction, silent shooting, GPS via mobile, S-Log2 gamma setting, Pixel Shift Resolution technology, peripheral shading correction, chromatic aberration correction, anti-flicker, Hybrid Log-Gamma (HLG) recording, S-Log3 gamma setting | RGB primary colour filter, depth-of-field preview button, histogram display, AE lock, AF lock, FE lock, cropping an image, resizing an image, highlight point display, Dust Delete Data system, Auto Lighting Optimizer, peripheral illumination correction, Multi-Frame Noise Reduction, HDR image enhancement technology, Time-Lapse recording, noise reduction over long exposures, high ISO speed noise reduction, GPS via mobile, distortion correction function, diffraction correction, chromatic aberration correction |
| OTHERS | Sony Alpha7R III ILCE-7RM3 | Canon EOS 850D |
|---|
| Included Accessories | Eyepiece cover, battery charger, body cap, shoulder strap, shoe cap, cable protector, USB-C cable | Battery charger, body cap, neck strap |
|---|---|---|
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | 0 °C | 0 °C |
| Service & Support | - | Limited warranty - 2 years |
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