Olympus OM-D E-M5 Mark II vs. Sony Alpha7 IV ILCE-7M4

Camera Comparison, Reviews and Tests

In depth comparison and review of Olympus OM-D E-M5 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.

Camera Specifications Comparison

Olympus OM-D E-M5 Mark II vs. Sony Alpha7 IV ILCE-7M4 Comparison Chart
DESIGN AND DIMENSIONS Olympus OM-D E-M5 Mark II Sony Alpha7 IV ILCE-7M4
Product Type Digital camera - mirrorless system Digital camera - 4K - mirrorless system
Lens Included Body only Body only
Height 8.5 cm 9.64 cm
Width 12.37 cm 13.13 cm
Depth 3.8 cm 7.98 cm
Weight 417 g 658 g
Weight Details - Camera with battery and memory card: 658 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 Alpha7 IV ILCE-7M4
Sensor Resolution 16.05 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 16,050,000 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-M5 Mark II Sony Alpha7 IV ILCE-7M4
Image Processor TruePic VII BIONZ XR
LENS Olympus OM-D E-M5 Mark II Sony Alpha7 IV ILCE-7M4
Lens Mounting Type Micro Four Thirds Sony E-mount
FOCUSING Olympus OM-D E-M5 Mark II Sony Alpha7 IV ILCE-7M4
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 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-M5 Mark II Sony Alpha7 IV ILCE-7M4
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 1.48x 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, exposure bracketing, battery status, AF lock -
Field of View Crop Factor 2 -
EXPOSURE & WHITE BALANCE Olympus OM-D E-M5 Mark II Sony Alpha7 IV ILCE-7M4
ISO (Max) 25600 204800
Native ISO 100-25600 100-51200
Extended ISO (Max) - 204800
Extended ISO (Min) - 50
Light Sensitivity ISO 100, ISO auto (100-25600), 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, ISO sensitivity bracketing, Shadow Adjustment Technology, Flash Exposure Bracketing Dynamic Range Bracketing, white balance 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 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 1/8000 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 Alpha7 IV ILCE-7M4
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 Display brightness control, display colour control, Touch AF Display brightness control
FLASH Olympus OM-D E-M5 Mark II Sony Alpha7 IV ILCE-7M4
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 Alpha7 IV ILCE-7M4
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-M5 Mark II Sony Alpha7 IV ILCE-7M4
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
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-M5 Mark II Sony Alpha7 IV ILCE-7M4
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 - 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-M5 Mark II Sony Alpha7 IV ILCE-7M4
Interface Composite video/audio, HDMI, USB 2.0, Wireless LAN 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 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, 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 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-M5 Mark II Sony Alpha7 IV ILCE-7M4
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, 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-M5 Mark II Sony Alpha7 IV ILCE-7M4
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 Drivers & Utilities, Olympus Viewer 3 -
Max Operating Temperature 40 °C 40 °C
Min Operating Temperature -10 °C 0 °C
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