Olympus OM-D E-M1X vs. Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS

Camera Comparison, Reviews and Tests

In depth comparison and review of Olympus OM-D E-M1X and Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS. 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.

Camera Specifications Comparison

Olympus OM-D E-M1X vs. Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS Comparison Chart
DESIGN AND DIMENSIONS Olympus OM-D E-M1X Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS
Product Type Digital camera - 4K - mirrorless system Digital camera - 4K - mirrorless system
Lens Included Body only FE 28-70mm OSS lens
Height 14.68 cm 9.64 cm
Width 14.44 cm 13.13 cm
Depth 7.54 cm 7.98 cm
Weight 849 g 658 g
Weight Details Camera with battery: 849 g
Camera with battery and memory card: 997 g
Camera with battery and memory card: 658 g
Body Material Magnesium alloy Magnesium alloy
Enclosure Colour Black -
Protection Splashproof, freezeproof, dust-resistant, IPX1 Dust-resistant, moisture-resistant
Digital Zoom - 4x
Navigation GPS receiver -
SENSOR Olympus OM-D E-M1X Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS
Sensor Resolution 20.4 Megapixel 33.0 Megapixel
Optical Sensor Type Live MOS Exmor R CMOS
Total Pixels 21,770,000 pixels 34,100,000 pixels
Effective Sensor Resolution 20,400,000 pixels 33,000,000 pixels
Optical Sensor Size Four Thirds (4/3") Full Frame (35.9 x 23.9 mm)
Frame Rate (Max Resolution) 24 fps 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 Barometer, magnetometer, temperature Digital level metre
PROCESSOR Olympus OM-D E-M1X Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS
Image Processor Dual TruePic VIII BIONZ XR
LENS Olympus OM-D E-M1X Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS
Type - Zoom lens 28 - 70 mm - f/3.5-5.6 FE OSS - zoom
Focus Adjustment - Automatic, manual
Min Focus Distance - 30 cm
Max View Angle - 75 degree(s)
Zoom Adjustment - Manual
Lens Construction - 8 groups / 9 elements
Filter Size - 55 mm
Lens Mounting Type Micro Four Thirds Sony E-mount
Features - Internal focusing system, full-time manual focusing, ED glass, splashproof, aspherical lens, dustproof
FOCUSING Olympus OM-D E-M1X Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS
Auto Focus TTL contrast and phase detection TTL contrast and phase detection
Auto Focus Points (Zones) Qty 121 759
Auto Focus Features Focus Peaking function, Frequency Accelerating Sensor Technology (F.A.S.T.) AF system Focus Peaking function, Predictive Focus Control
AE/AF Control Face-priority AF, Subject-tracking AF, Touch Area AF, Eye detection AF, Subject 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, face-priority AF function Eye Detect AF, face-priority AF function
VIEWFINDER Olympus OM-D E-M1X Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS
Viewfinder Type Electronic - LCD 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 1.65x 0.78x
Optical Viewfinder Dioptric Correction Range -4 to +2 -4 to +3
Field of View Crop Factor 2 -
Features Auto eye sensor -
EXPOSURE & WHITE BALANCE Olympus OM-D E-M1X Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS
ISO (Max) 25600 204800
Native ISO 200-25600 100-51200
Extended ISO (Max) - 204800
Extended ISO (Min) 64 50
Light Sensitivity ISO 100, ISO 64, ISO auto (200-6400), ISO 200-25600 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, focus bracketing, ISO sensitivity bracketing, Flash Exposure Bracketing, white balance bracketing Dynamic Range Bracketing, white balance bracketing
Special Effects - Soft Skin, Creative Look presets
White Balance Custom, automatic, presets Custom, automatic, presets
White Balance Presets Incandescent, fluorescent, cloudy, sunlight, Flash, shade, Underwater, 3000K - 7500K 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 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 - 3, 5 or 9 steps
White Balance Bracketing Yes -
X-sync Speed 1/250sec 1/250sec
Exposure Range EV -2-20 (ISO 100) EV -3-20 (ISO 100)
DISPLAY Olympus OM-D E-M1X Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS
Type 3" LCD display 3" LCD display
Touch Screen Yes Yes
Display Format 1,037,000 pixels 1,036,000 pixels
Display Form Factor Rotating Folding
Display Features - Display brightness control
VIDEOGRAPHY / CAMCORDER Olympus OM-D E-M1X Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS
Digital Video Format H.264, MOV MPEG-4, H.264, XAVC S, H.265, XAVC HS
Image Recording Format JPEG, RAW, RAW + JPEG JPEG, RAW, RAW + JPEG, HEIF, RAW + HEIF
Max Video Resolution 4096 x 2160 3840 x 2160
Audio Signal Format - Linear PCM, AAC
Microphone Operation Mode Stereo Stereo
Microphone Features - Wind noise reduction
MEMORY Olympus OM-D E-M1X Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS
Memory Card Slot Dual 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, 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, SDHC UHS-II Memory Card, SDXC UHS-II Memory Card, CFexpress
Memory Card Included No -
Image Storage RAW 5184 x 3888
JPEG 5184 x 3888
RAW 8160 x 6120 - High Resolution Mode
JPEG 8160 x 6120 - High Resolution Mode
JPEG 5760 x 4320 - High Resolution Mode
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 - 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-M1X Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS
Battery Type Olympus BLH-1 Lithium Ion Sony NP-FZ100 Lithium Ion
Details 2 x Olympus BLH-1 Li-ion rechargeable battery - 1720 mAh (included) Sony NP-FZ100 Li-ion rechargeable battery - 2280 mAh (included)
Battery Life Photo shooting - 2580 shots (quick sleep mode)
Photo shooting - 870 shots
Video recording - 170 minutes
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-M1X Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS
Interface HDMI, USB 3.0, IEEE 802.11a/b/g/n/ac, Bluetooth 4.2 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 Exif Print support, PRINT Image Matching
Flash Terminal Hot shoe Hot shoe
Connector Type USB 3.0 (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)
Remote control (sub-mini phone 2.5 mm)
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-M1X Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS
Self-Timer Delay 2sec, 12sec 10 sec, 2sec, 5 sec
Continuous Shooting Speed 15 frames per second, 60 frames per second 8 frames per second, 3 frames per second, 10 frames per second, 6 frames per second
HDR Mode Auto HDR mode -
Additional Features Built-in speaker, auto power save, relay recording, USB charging, high-speed recording, Time-Lapse recording, Focus Stacking, Flickering Reduction function, 50-megapixel High Resolution mode 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-M1X Sony Alpha7 IV ILCE-7M4K + FE 28-70mm OSS
Included Accessories Carrying strap, battery charger, body cap, eyecup, cable clip, cable protector, hot shoe cover, USB-C cable, battery holder Eyepiece cover, lens hood, dust cap, body cap, lens cap, shoulder strap, AC power adaptor, shoe cap, USB-C to USB-A cable
Max Operating Temperature 40 °C 40 °C
Min Operating Temperature -10 °C 0 °C
Service & Support Limited warranty - 2 years -
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