In depth comparison and review of Olympus OM-D E-M5 Mark II 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 | Olympus OM-D E-M5 Mark II | Sony Alpha7s III ILCE-7SM3 |
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| Product Type | Digital camera - mirrorless system | Digital camera - 4K - mirrorless system |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 8.5 cm | 9.69 cm |
| Width | 12.37 cm | 12.89 cm |
| Depth | 3.8 cm | 8.08 cm |
| Weight | 417 g | 699 g |
| Weight Details | - | Camera with battery and memory card: 699 g |
| Body Material | Magnesium alloy | Magnesium alloy |
| Enclosure Colour | Black | Silver | - |
| Protection | Weatherproof, splashproof, dust-resistant | Dust-resistant, moisture-resistant |
| Digital Zoom | - | 4x |
| SENSOR | Olympus OM-D E-M5 Mark II | Sony Alpha7s III ILCE-7SM3 |
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| Sensor Resolution | 16.05 Megapixel | 12.1 Megapixel |
|---|---|---|
| Optical Sensor Type | Live MOS | Exmor R CMOS |
| Total Pixels | 17,200,000 pixels | 12,900,000 pixels |
| Effective Sensor Resolution | 16,050,000 pixels | 12,100,000 pixels |
| Optical Sensor Size | Four Thirds (4/3") | Full Frame (35.6 x 23.8 mm) |
| Frame Rate (Max Resolution) | - | 120 fps |
| Sensor Dust Reduction | Yes | Yes |
| Sensor Features | Supersonic Wave Filter (SWF) | Dust Reduction (image sensor vibration), Anti-Dust coating |
| Image Stabiliser | Optical (5-axis image sensor shift mechanism) | Optical (5-axis Steady Shot) |
| Built-in Optical Image Stabiliser | Yes | Yes |
| Sensors | Digital level metre | Digital level metre |
| PROCESSOR | Olympus OM-D E-M5 Mark II | Sony Alpha7s III ILCE-7SM3 |
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| Image Processor | TruePic VII | BIONZ XR |
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| LENS | Olympus OM-D E-M5 Mark II | Sony Alpha7s III ILCE-7SM3 |
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| Lens Mounting Type | Micro Four Thirds | Sony E-mount |
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| FOCUSING | Olympus OM-D E-M5 Mark II | Sony Alpha7s III ILCE-7SM3 |
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| Auto Focus | TTL contrast detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 81 | 759 |
| Auto Focus Features | Focus Peaking function, Manual Focus Check Live View | Focus Peaking function, Predictive Focus Control |
| AE/AF Control | Subject-tracking AF, Eye detection AF | Flex Focus Point, Face-priority AF, Subject-tracking AF, Eye detection AF |
| Face Detection | Eye Detect AF | Face Recognition, face-priority AF function |
| VIEWFINDER | Olympus OM-D E-M5 Mark II | Sony Alpha7s III ILCE-7SM3 |
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| Viewfinder Type | Built-in - electronic | Built-in - electronic |
|---|---|---|
| Viewfinder Colour Support | Colour | Colour |
| Viewfinder Diagonal Size | - | 0.64" |
| Viewfinder Resolution | 2,360,000 pixels | 9,437,184 pixels |
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 1.48x | 0.9x |
| Optical Viewfinder Dioptric Correction Range | -4 to +2 | -4 to +3 |
| Viewfinder Information | Shutter speed, exposure compensation, AF-in-focus, aperture, frame counter, white balance, metering system, Exposure Mode, exposure bracketing, battery status, AF lock | - |
| Field of View Crop Factor | 2 | - |
| EXPOSURE & WHITE BALANCE | Olympus OM-D E-M5 Mark II | Sony Alpha7s III ILCE-7SM3 |
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| ISO (Max) | 25600 | 409600 |
|---|---|---|
| Native ISO | 100-25600 | - |
| Extended ISO (Max) | - | 409600 |
| Extended ISO (Min) | - | 40 |
| Light Sensitivity | ISO 100, ISO auto (100-25600), ISO 200-25600 | ISO 204800, ISO 409600, ISO 80-102400, ISO 40 |
| Exposure Metering | Multi-segment, centre-weighted, spot | Multi-segment, centre-weighted, spot |
| Exposure Metering Zones | 324 | 1200 |
| Exposure Modes | Programme, bulb, automatic, manual, aperture-priority, shutter-priority | Bulb, automatic, manual, aperture-priority, shutter-priority |
| Bracketing Modes | Art Filter bracketing, ISO sensitivity bracketing, Shadow Adjustment Technology, Flash Exposure Bracketing | Dynamic Range Bracketing |
| Shooting Programs | Landscape, portrait mode, macro, beach/snow, landscape-portrait, Children, fireworks, 3D image, multiple exposure, panorama assist, night scene, panning, sports mode, sunset, candle, high key, night scene with portrait, low key, documents, nature macro, e-portrait, fisheye converter, wide converter, macro converter, handheld starlight, digital IS | - |
| Special Effects | Art, Black & White, Sepia, Monotone, Black & White Red filter, Black & White Yellow filter, Vivid, purple, blue, green, soft focus, natural, Black & White Green filter, Muted, portrait, Diorama, Cross Process, composite, partial colour, Grainy Film, Light Tone, Pop Art, Pale & Light Colour, pin hole, Gentle Sepia, i-Enhance, Dramatic Tone, Key Line, Vintage | - |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Fluorescent, sunlight, tungsten light, Flash, shade, overcast, Underwater, 2000K - 14000K | Incandescent, fluorescent, cloudy, Flash, daylight, shade, Underwater, 2500K - 9900K |
| Shutter Type | Mechanical | Mechanical electronically-controlled |
| Max Shutter Speed | 1/8000 sec | 1/8000 sec |
| Min Shutter Speed | 60 sec | 30 sec |
| Exposure Compensation | ±5 EV range, in 1, 1/2 or 1/3 EV steps | ±5 EV range, in 1/2 or 1/3 EV steps |
| Auto Exposure Bracketing | 2, 3, 5 steps in 1/3, 1/2, 1 EV steps | 3, 5 or 9 steps |
| White Balance Bracketing | Yes | - |
| X-sync Speed | 1/250sec, 1/8000 sec | 1/250sec |
| Exposure Range | EV -2-20 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Olympus OM-D E-M5 Mark II | Sony Alpha7s III ILCE-7SM3 |
|---|
| Type | 3" LCD display | 3" LCD display |
|---|---|---|
| Touch Screen | Yes | Yes |
| Display Format | 1,037,000 pixels | 1,440,000 pixels |
| Display Form Factor | Folding | Folding |
| Display Features | Display brightness control, display colour control, Touch AF | Display brightness control |
| FLASH | Olympus OM-D E-M5 Mark II | Sony Alpha7s III ILCE-7SM3 |
|---|
| Camera Flash | Detachable flash | - |
|---|---|---|
| Guide Number (m / ISO 100) | 12.9 | - |
| Flash Modes | Fill-in mode, rear curtain sync, slow synchro, auto mode, flash OFF mode, red-eye reduction | - |
| Red-Eye Reduction | Yes | - |
| Features | AF illuminator, flash +/- compensation, wireless off-camera control, flash exposure bracketing | - |
| External Flash Name | Olympus FL-LM3 | - |
| VIDEOGRAPHY / CAMCORDER | Olympus OM-D E-M5 Mark II | Sony Alpha7s III ILCE-7SM3 |
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| Digital Video Format | AVI, MJPEG, H.264, MOV | H.264, XAVC S, H.265, XAVC HS |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG, MPO | JPEG, RAW, RAW + JPEG |
| Max Video Resolution | 1920 x 1080 | 3840 x 2160 |
| Audio Signal Format | - | AAC |
| Microphone Operation Mode | Stereo | Stereo |
| Microphone Features | Wind noise reduction, sensitivity control | - |
| MEMORY | Olympus OM-D E-M5 Mark II | Sony Alpha7s III ILCE-7SM3 |
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| Memory Card Slot | SD card | Dual SD card, dual CFexpress |
|---|---|---|
| Supported Memory Cards | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card | 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 Included | No | No |
| Image Storage | RAW 4608 x 3456 - 17 MB JPEG 4608 x 3456 - 7.5 MB JPEG 4608 x 3456 - 3.5 MB JPEG 3200 x 2400 - 1.7 MB JPEG 1280 x 960 - 0.4 MB |
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 | MOV - 1920 x 1080 - 30 fps MOV - 1920 x 1080 - 25 fps MOV - 1920 x 1080 - 24 fps MOV - 1920 x 1080 - 60 fps MOV - 1920 x 1080 - 50 fps MOV - 1280 x 720 - 60 fps MOV - 1280 x 720 - 50 fps MOV - 1280 x 720 - 30 fps MOV - 1280 x 720 - 25 fps MOV - 1280 x 720 - 24 fps MJPEG - 1280 x 720 - 30 fps MJPEG - 640 x 480 - 30 fps |
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 | Olympus OM-D E-M5 Mark II | Sony Alpha7s III ILCE-7SM3 |
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| Battery Type | Olympus BLN-1 Lithium Ion | Sony NP-FZ100 Lithium Ion |
|---|---|---|
| Details | Olympus BLN-1 Li-ion rechargeable battery (included) | Sony NP-FZ100 Li-ion rechargeable battery - 2280 mAh (included) |
| Battery Life | Photo shooting - 750 shots | 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 | Olympus OM-D E-M5 Mark II | Sony Alpha7s III ILCE-7SM3 |
|---|
| Interface | Composite video/audio, HDMI, USB 2.0, Wireless LAN | HDMI, USB-C, Wireless LAN, NFC (Near Field Communication), Bluetooth 5.0 |
|---|---|---|
| Connectivity Features | Remote control via mobile devices, remote live view | Remote control via mobile devices, Wireless Image Transfer, PC Remote functions via Wi-Fi |
| Print Standard | DPOF support, Exif Print support, PictBridge support, PRINT Image Matching | Exif Print support, PRINT Image Matching |
| Flash Terminal | Hot shoe | Hot shoe |
| Connector Type | USB 2.0 Composite video/audio output HDMI output (19 pin micro HDMI Type D) |
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 | Olympus OM-D E-M5 Mark II | Sony Alpha7s III ILCE-7SM3 |
|---|
| Self-Timer Delay | 2sec, 12sec | 10 sec, 2sec, 5 sec |
|---|---|---|
| Continuous Shooting Speed | 5 frames per second, 10 frames per second | 8 frames per second, 3 frames per second, 10 frames per second, 6 frames per second |
| HDR Mode | Auto HDR mode, HDR post-processing | - |
| Additional Features | Audio recording, built-in speaker, RGB primary colour filter, auto power save, digital noise reduction, sharpness control, histogram display, AE lock, AF lock, cropping an image, resizing an image, saturation control, in-camera red-eye fix, interval shooting mode, contrast control, face detection, digital tele-converter, Shadow Adjustment Technology, in-camera RAW processing, Full-time Live View, Intelligent AUTO (iAUTO), Eye-Fi Card Ready, Touch Shutter technology, GPS via mobile | 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 | Olympus OM-D E-M5 Mark II | Sony Alpha7s III ILCE-7SM3 |
|---|
| Included Accessories | Battery charger, body cap, shoulder strap, USB cable | - |
|---|---|---|
| Software | Drivers & Utilities, Olympus Viewer 3 | - |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | -10 °C | 0 °C |
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