Olympus OM-D E-M5 Mark III vs. Sony Alpha7s III ILCE-7SM3

Camera Comparison, Reviews and Tests
Olympus OM-D E-M5 Mark III
Sony Alpha7s III ILCE-7SM3

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

Camera Specifications Comparison

Olympus OM-D E-M5 Mark III vs. Sony Alpha7s III ILCE-7SM3 Comparison Chart
DESIGN AND DIMENSIONS Olympus OM-D E-M5 Mark III Sony Alpha7s III ILCE-7SM3
Product Type Digital camera - 4K - mirrorless system Digital camera - 4K - mirrorless system
Lens Included Body only Body only
Height 8.52 cm 9.69 cm
Width 12.53 cm 12.89 cm
Depth 4.97 cm 8.08 cm
Weight 366 g 699 g
Weight Details Camera body only: 366 g
Camera with battery and memory card: 414 g		 Camera with battery and memory card: 699 g
Body Material - Magnesium alloy
Enclosure Colour Black | Silver -
Protection Splashproof, freezeproof, dust-resistant Dust-resistant, moisture-resistant
Digital Zoom - 4x
SENSOR Olympus OM-D E-M5 Mark III Sony Alpha7s III ILCE-7SM3
Sensor Resolution 20.4 Megapixel 12.1 Megapixel
Optical Sensor Type Live MOS Exmor R CMOS
Total Pixels 21,800,000 pixels 12,900,000 pixels
Effective Sensor Resolution 20,400,000 pixels 12,100,000 pixels
Optical Sensor Size Four Thirds (4/3") Full Frame (35.6 x 23.8 mm)
Frame Rate (Max Resolution) 24 fps 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 III Sony Alpha7s III ILCE-7SM3
Image Processor TruePic VIII BIONZ XR
LENS Olympus OM-D E-M5 Mark III Sony Alpha7s III ILCE-7SM3
Lens Mounting Type Micro Four Thirds Sony E-mount
FOCUSING Olympus OM-D E-M5 Mark III Sony Alpha7s III ILCE-7SM3
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, 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 III Sony Alpha7s III ILCE-7SM3
Viewfinder Type Electronic - OLED 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 1.37x 0.9x
Optical Viewfinder Dioptric Correction Range -4 to +2 -4 to +3
Field of View Crop Factor 2 -
EXPOSURE & WHITE BALANCE Olympus OM-D E-M5 Mark III Sony Alpha7s III ILCE-7SM3
ISO (Max) 25600 409600
Native ISO 200-25600 -
Extended ISO (Max) - 409600
Extended ISO (Min) 64 40
Light Sensitivity ISO 100, ISO 64, ISO auto, 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, Flash Exposure Bracketing, white balance bracketing Dynamic Range Bracketing
Special Effects Soft focus, Water Colour, Diorama, Cross Process, partial colour, Grainy Film, Light Tone, Pop Art, Pale & Light Colour, pin hole, Gentle Sepia, Dramatic Tone, Bleach Bypass, Key Line, Vintage, Nostalgia, Neo Nostalgia -
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, electronic Mechanical electronically-controlled
Max Shutter Speed 1/32000 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
Exposure Range EV -2-20 (ISO 100) EV -3-20 (ISO 100)
DISPLAY Olympus OM-D E-M5 Mark III Sony Alpha7s III ILCE-7SM3
Type 3" LCD display 3" LCD display
Touch Screen Yes Yes
Display Format 1,040,000 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 III 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 III Sony Alpha7s III ILCE-7SM3
Digital Video Format 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 4096 x 2160 3840 x 2160
Audio Signal Format Linear PCM AAC
Microphone Operation Mode Stereo Stereo
Microphone Features Wind noise reduction, sensitivity control -
MEMORY Olympus OM-D E-M5 Mark III Sony Alpha7s III ILCE-7SM3
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 5184 x 3888
JPEG 5184 x 3888
JPEG 1024 x 768		 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 p - 30 fps
MOV - 1920 x 1080 p - 25 fps
MOV - 1920 x 1080 p - 24 fps
MOV - 1920 x 1080 p - 60 fps
MOV - 1920 x 1080 p - 50 fps
MOV - 1280 x 720 p - 60 fps
MOV - 1280 x 720 p - 50 fps
MOV - 1280 x 720 p - 30 fps
MOV - 1280 x 720 p - 25 fps
MOV - 1280 x 720 p - 24 fps
MOV - 4096 x 2160 p - 30 fps
MOV - 3840 x 2160 p - 30 fps
MOV - 3840 x 2160 p - 25 fps
MOV - 3840 x 2160 p - 24 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 III Sony Alpha7s III ILCE-7SM3
Battery Type Olympus BLS-50 Lithium Ion Sony NP-FZ100 Lithium Ion
Details Olympus BLS-50 Li-ion rechargeable battery (included) Sony NP-FZ100 Li-ion rechargeable battery - 2280 mAh (included)
Battery Life Photo shooting - 310 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 III Sony Alpha7s III ILCE-7SM3
Interface HDMI, USB 2.0, IEEE 802.11a/b/g/n, Bluetooth 4.2 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 Exif Print support Exif Print support, PRINT Image Matching
Flash Terminal Hot shoe Hot shoe
Connector Type USB 2.0 (5 pin Micro-USB Type B)
HDMI output (19 pin micro HDMI Type D)
Microphone (mini-phone stereo 3.5 mm)
Remote control (sub-mini phone 2.5 mm)		 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 III Sony Alpha7s III ILCE-7SM3
Self-Timer Delay 2sec, 12sec 10 sec, 2sec, 5 sec
Continuous Shooting Speed 10 frames per second, 30 frames per second, 6 frames per second 8 frames per second, 3 frames per second, 10 frames per second, 6 frames per second
Additional Features Auto power save, AE lock, AF lock, interval shooting mode, USB charging, high-speed recording, Touch Shutter technology, Focus Stacking, 50-megapixel High Resolution mode 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 III Sony Alpha7s III ILCE-7SM3
Included Accessories Battery charger, body cap, shoulder strap, USB cable -
Max Operating Temperature 40 °C 40 °C
Min Operating Temperature -10 °C 0 °C
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