In depth comparison and review of Olympus OM-D E-M10 Mark II and Sony Alpha7 IV ILCE-7M4. 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-M10 Mark II | Sony Alpha7 IV ILCE-7M4 |
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| Product Type | Digital camera - 1080p - mirrorless system | Digital camera - 4K - mirrorless system |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 8.31 cm | 9.64 cm |
| Width | 11.95 cm | 13.13 cm |
| Depth | 4.67 cm | 7.98 cm |
| Weight | 342 g | 658 g |
| Weight Details | - | Camera with battery and memory card: 658 g |
| Body Material | - | Magnesium alloy |
| Enclosure Colour | Silver | - |
| Protection | - | Dust-resistant, moisture-resistant |
| Digital Zoom | - | 4x |
| SENSOR | Olympus OM-D E-M10 Mark II | Sony Alpha7 IV ILCE-7M4 |
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| Sensor Resolution | 16.1 Megapixel | 33.0 Megapixel |
|---|---|---|
| Optical Sensor Type | Live MOS | Exmor R CMOS |
| Total Pixels | 17,200,000 pixels | 34,100,000 pixels |
| Effective Sensor Resolution | 16,100,000 pixels | 33,000,000 pixels |
| Optical Sensor Size | Four Thirds (4/3") | Full Frame (35.9 x 23.9 mm) |
| Frame Rate (Max Resolution) | - | 60 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 (Steady Shot with 5-axis Intelligent Active Mode) |
| Built-in Optical Image Stabiliser | Yes | Yes |
| Sensors | Digital level metre | Digital level metre |
| PROCESSOR | Olympus OM-D E-M10 Mark II | Sony Alpha7 IV ILCE-7M4 |
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| Image Processor | TruePic VII | BIONZ XR |
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| LENS | Olympus OM-D E-M10 Mark II | Sony Alpha7 IV ILCE-7M4 |
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| Lens Mounting Type | Micro Four Thirds | Sony E-mount |
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| FOCUSING | Olympus OM-D E-M10 Mark II | Sony Alpha7 IV ILCE-7M4 |
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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, Predictive Focus Control |
| AE/AF Control | Subject-tracking AF, Eye detection AF | Face-priority AF, Subject-tracking AF, Touch Area AF, Zone AF, Real-time Eye AF, Real-time Tracking AF, Wide-area AF, Expanded area AF, animal eye detection, bird eye detection, right/left eye select |
| Face Detection | Eye Detect AF | Eye Detect AF, face-priority AF function |
| VIEWFINDER | Olympus OM-D E-M10 Mark II | Sony Alpha7 IV ILCE-7M4 |
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| Viewfinder Type | Built-in - electronic | Electronic - OLED |
|---|---|---|
| Viewfinder Colour Support | Colour | Colour |
| Viewfinder Diagonal Size | - | 0.5" |
| Viewfinder Resolution | 2,360,000 pixels | 3,686,400 pixels |
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | - | 0.78x |
| 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, image stabilizer, exposure bracketing, battery status, AF lock, AF point, electronic level | - |
| Field of View Crop Factor | 2 | - |
| Features | Viewfinder brightness control, auto eye sensor, colour temperature control | - |
| EXPOSURE & WHITE BALANCE | Olympus OM-D E-M10 Mark II | Sony Alpha7 IV ILCE-7M4 |
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| ISO (Max) | 25600 | 204800 |
|---|---|---|
| Native ISO | 100-25600 | 100-51200 |
| Extended ISO (Max) | - | 204800 |
| Extended ISO (Min) | - | 50 |
| Light Sensitivity | ISO auto, ISO 100-25600, ISO auto (100-25600) | ISO 50, ISO auto, ISO 204800, ISO 100-51200 |
| Exposure Metering | Multi-segment, centre-weighted, spot | Multi-segment, centre-weighted, average, highlight spot |
| Exposure Metering Zones | 324 | 1200 |
| Exposure Modes | Programme, bulb, automatic, manual, aperture-priority, shutter-priority | Automatic, manual, aperture-priority, shutter-priority |
| Bracketing Modes | Art Filter bracketing, ISO sensitivity bracketing | Dynamic Range Bracketing, white balance bracketing |
| Shooting Programs | Landscape, portrait mode, macro, beach/snow, landscape-portrait, Children, fireworks, 3D image, 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, digital IS, handheld night scene | - |
| Special Effects | Sepia, Black & White Red filter, Black & White Yellow filter, purple, blue, green, Frames, Black & White Orange filter, soft focus, Black & White Green filter, Water Colour, Diorama, Cross Process, partial colour, Grainy Film, Light Tone, Pop Art, Pale & Light Colour, pin hole, Gentle Sepia, Dramatic Tone, Shading, Key Line, Vintage, Star Light, White Edge | Soft Skin, Creative Look presets |
| 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 | 1/6000 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 | 7 steps in 1/3, 2/3 or 1 EV steps | 3, 5 or 9 steps |
| White Balance Bracketing | Yes | - |
| X-sync Speed | 1/250sec, 1/4000 sec | 1/250sec |
| Exposure Range | EV -2-20 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Olympus OM-D E-M10 Mark II | Sony Alpha7 IV ILCE-7M4 |
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| Type | 3" LCD display | 3" LCD display |
|---|---|---|
| Touch Screen | Yes | Yes |
| Display Format | 1,037,000 pixels | 1,036,000 pixels |
| Display Form Factor | Folding | Folding |
| Display Features | Contrast control | Display brightness control |
| FLASH | Olympus OM-D E-M10 Mark II | Sony Alpha7 IV ILCE-7M4 |
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| Camera Flash | Pop-up flash | - |
|---|---|---|
| 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 | - |
| VIDEOGRAPHY / CAMCORDER | Olympus OM-D E-M10 Mark II | Sony Alpha7 IV ILCE-7M4 |
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| Digital Video Format | AVI, MJPEG, H.264, MOV | MPEG-4, H.264, XAVC S, H.265, XAVC HS |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG, MPO | JPEG, RAW, RAW + JPEG, HEIF, RAW + HEIF |
| Max Video Resolution | 1920 x 1080 | 3840 x 2160 |
| Audio Signal Format | - | Linear PCM, AAC |
| Microphone Operation Mode | Stereo | Stereo |
| Microphone Features | Wind noise reduction, sensitivity control | Wind noise reduction |
| MEMORY | Olympus OM-D E-M10 Mark II | Sony Alpha7 IV ILCE-7M4 |
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| Memory Card Slot | SD card | SD card, CFexpress / SD card |
|---|---|---|
| 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 | - |
| 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 |
7008 x 4672 4608 x 3072 3504 x 2336 4608 x 3072 - APS-C mode 3504 x 2336 - APS-C mode 6224 x 4672 4096 x 3072 3120 x 2336 4096 x 3072 - APS-C mode 3120 x 2336 - APS-C mode 7008 x 3944 4608 x 2592 3504 x 1968 4608 x 2592 - APS-C mode 3504 x 1968 - APS-C mode 4672 x 4672 3072 x 3072 2336 x 2336 3072 x 3072 - APS-C mode 2336 x 2336 - APS-C mode |
| 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 AVI - 1280 x 720 - 60 fps AVI - 1280 x 720 - 50 fps AVI - 1280 x 720 - 30 fps AVI - 1280 x 720 - 25 fps AVI - 1280 x 720 - 24 fps MJPEG - 1280 x 720 - 30 fps MJPEG - 640 x 480 - 30 fps |
XAVC HS - 3840 x 2160 p - 60 fps XAVC HS - 3840 x 2160 p - 24 fps XAVC HS - 3840 x 2160 p - 50 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 - 50 fps XAVC S - 3840 x 2160 p - 25 fps XAVC S - 1920 x 1080 p - 60 fps XAVC S - 1920 x 1080 p - 30 fps XAVC S - 1920 x 1080 p - 24 fps XAVC S - 1920 x 1080 p - 50 fps XAVC S - 1920 x 1080 p - 25 fps |
| BATTERY AND CHARGING | Olympus OM-D E-M10 Mark II | Sony Alpha7 IV ILCE-7M4 |
|---|
| Battery Type | Olympus BLS-5 Lithium Ion | Sony NP-FZ100 Lithium Ion |
|---|---|---|
| Details | Olympus BLS-5 Li-ion rechargeable battery (included) | Sony NP-FZ100 Li-ion rechargeable battery - 2280 mAh (included) |
| Battery Life | Photo shooting - 320 shots | Photo shooting - 520 shots (EVF on) Photo shooting - 580 shots (LCD Monitor on) Video recording - 100 minutes (EVF on) Video recording - 110 minutes (LCD Monitor on) |
| CONNECTIONS | Olympus OM-D E-M10 Mark II | Sony Alpha7 IV ILCE-7M4 |
|---|
| Interface | Composite video/audio, HDMI, USB 2.0, IEEE 802.11b/g/n | USB 2.0, USB-C, IEEE 802.11a/b/g/n/ac, Bluetooth 4.1 |
|---|---|---|
| Connectivity Features | Remote control via mobile devices, remote live view, QR code scanning | Remote control via mobile devices, remote live view, Wireless Image Transfer, wireless video upload to FTP server, PC Remote functions via Wi-Fi |
| Print Standard | DPOF support, Exif Print support, PRINT Image Matching | Exif Print support, PRINT Image Matching |
| Flash Terminal | Hot shoe, PC terminal | Hot shoe |
| Connector Type | USB 2.0 Composite video/audio output HDMI output (19 pin micro HDMI Type D) |
USB 2.0 (5 pin Micro-USB Type B) USB 3.2 Gen 1 (USB Type-C) Microphone (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) |
| FEATURES | Olympus OM-D E-M10 Mark II | Sony Alpha7 IV ILCE-7M4 |
|---|
| Self-Timer Delay | 2sec, 12sec | 10 sec, 2sec, 5 sec |
|---|---|---|
| Continuous Shooting Speed | 4 frames per second, 8.5 frames per second | 8 frames per second, 3 frames per second, 10 frames per second, 6 frames per second |
| Additional Features | Built-in speaker, RGB primary colour filter, auto power save, sharpness control, camera orientation detection, histogram display, cropping an image, resizing an image, saturation control, in-camera red-eye fix, shadow point display, interval shooting mode, highlight point display, takes photos while film recording, built-in help guide, Shadow Adjustment Technology, in-camera RAW processing, HDR image enhancement technology, Intelligent AUTO (iAUTO), Dual Axis Electronic Level, GPS via mobile | Built-in speaker, camera orientation detection, histogram display, shadow point display, highlight point display, Dynamic Range Optimizer, USB charging, Intelligent AUTO (iAUTO), fast motion recording, noise reduction over long exposures, high ISO speed noise reduction, silent shooting, BRAVIA Sync function, distortion correction function, S-Log2 gamma setting, slow motion recording, peripheral shading correction, chromatic aberration correction, anti-flicker, Hybrid Log-Gamma (HLG) recording, S-Log3 gamma setting, 4:2:2 10-bit internal rercording, simultaneous streaming & recording mode, focus breathing compensation, USB streaming, 14-bit RAW |
| OTHERS | Olympus OM-D E-M10 Mark II | Sony Alpha7 IV ILCE-7M4 |
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| Included Accessories | Battery charger, body cap, shoulder strap, USB cable | Eyepiece cover, body cap, shoulder strap, AC power adaptor, shoe cap, USB-C to USB-A cable |
|---|---|---|
| Software | Olympus Viewer 3 | - |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | 0 °C | 0 °C |
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