Sony Alpha A7 vs Olympus OM-D E-M10 Mark III

Sony Alpha A7

Sony Alpha A7

24 megapixels, Full frame, 35.8 x 23.9 mm, Xtra Fine LCD, 3″, 5.0 fps

Olympus OM-D E-M10 Mark III

Olympus OM-D E-M10 Mark III

16 megapixels, Four Thirds, 17.4 x 13 mm, 8.6 fps

Here we are comparing two cameras with different sensors. Sony Alpha A7 is equipped with a Full frame sensor, but Olympus OM-D E-M10 Mark III with Four Thirds. The Sony was announced on the 2014-01-22, while Olympus on 2017-08-31.

Sony Alpha A7 advantages over Olympus OM-D E-M10 Mark III

  • More Megapixels
    24 megapixels vs 16 megapixels
    The more megapixels, the higher the detail of an image
  • Bigger Sensor
    35.8 x 23.9 mm vs 17.4 x 13 mm
    Well, when it comes to sensor size, bigger is (usually) better
  • Lower ISO
    100 vs 200
    Both tonal reproduction and colors will be of very high quality
  • Larger Screen
    3″ vs
    It's more convenient to see the result on a larger screen
  • Higher Screen Resolution
    1,230k dots vs
    The higher the resolution, the more detail you can see on photos
  • Microphone Port
    true vs false
    Improved sound fidelity when shooting video
  • Environmental Sealing
    true vs false
    Protection of the internal parts of a camera from external influences
  • Longer Battery Life
    340 shots vs 330 shots
    Capture more photos

Olympus OM-D E-M10 Mark III advantages over Sony Alpha A7

  • More Lenses
    92 vs 83
    Better lens selection gives you more options
  • Have Touch Screen
    true vs false
    Interact with your camera just like your smartphone
  • More Photos in a Second
    8.6 fps vs 5.0 fps
    Fast continuous shooting is great for catching action shots
  • Image Stabilization
    true vs false
    Reduces the effects of camera shake at slower shutter speeds
  • More Auto Focus Points
    121 vs 117
    The more of them available, the greater flexibility the photographer has
  • Higher Video Resolution
    3840 x 2160 vs 1920 x 1080
    Higher resolutions will contain more detail than lower
  • Lighter Weight
    410g vs 474g
    A lighter camera is more convenient for travel

Common Strengths

  • Max Native ISO
    25,600 vs 25,600
  • Live View
    true vs true
  • Storage Slots
    1 vs 1

Sony Alpha A7 vs Olympus OM-D E-M10 Mark III Sensor Comparison

Here you can see the Sony Alpha A7 and Olympus OM-D E-M10 Mark III sensor size comparison.

  • Sensor area 855.62 mm²
  • Pixel pitch 5.97 µm
  • Pixel density 2.81 MP/cm²
Full frame
  • 226.2 mm²
  • 3.78 µm
  • 7.01 MP/cm²
Four Thirds


ModelSony Alpha A7Olympus OM-D E-M10 Mark III
Body TypeSLR-style mirrorlessSLR-style mirrorless

DxO Sensor Scores

DxO Overall Score90not tested
DxO Color Depth24.8not tested
DxO Dynamic Range14.2not tested
DxO Low Light ISO2248not tested


Sensor Resolution24 megapixels16 megapixels
Sensor SizeFull frameFour Thirds
Sensor Dimensions35.8 x 23.9 mm17.4 x 13 mm
Sensor Area855.62mm2226.20mm2
Max Image Resolution6000 x 40004608 x 3456
Min Native ISO100200
Max Native ISO25,60025,600
RAW Supporttruetrue


Lens MountSony EMicro Four Thirds
Number of Lenses8392
Manual Focustruetrue
Focal Length Multiplier1x2x
Macro Focus Rangen/an/a


Viewfinder Coverage100%100%
Viewfinder Resolution2,359k dots2,360k dots
Viewfinder Magnification0.710.62


Display TypeTiltingTilting
Display TechnologyXtra Fine LCD
Display Size3″
Display Resolution1,230k dots
Live Viewtruetrue
Touch Screenfalsetrue

Photography Features

Min Shutter Speed30s60s
Max Shutter Speed1/8000s1/4000s
Continuous Shooting5.0 fps8.6 fps
Shutter Prioritytruetrue
Aperture Prioritytruetrue
Manual Exposure Modetruetrue
Exposure CompensationYesYes
Custom White Balancetruetrue
Image Stabilizationfalsetrue
Built-in Flashfalsetrue
External Flashtruetrue
Flash Rangeno built-in flash5.80 m (at ISO 100)
Flash Modesno built-in flashAuto, redeye, slow sync, 2nd-curtain slow sync, redeye slow sync, fill-in, manual, off
Max Flash Sync1/250s
WB Bracketingtruetrue
AE Bracketingtruetrue

Exposure Modes

Center Weightedtruefalse


Touch Autofocusfalsetrue
Continuous Autofocustruetrue
Single Autofocustruetrue
Tracking Autofocusfalsetrue
Selective Autofocustruetrue
Center Autofocustruetrue
Multi Area Focustruetrue
Live View Focustruetrue
Face Detection Autofocustruetrue
Contrast Autofocustruetrue
Phase Detection Autofocustruefalse
Number of Autofocus Points117121
Number of Cross Focus Points25Unknown

Video Features

Video Resolutions1920 x 1080 (60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p)3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM
Max Video Resolution1920 x 10803840 x 2160
Video FormatsMPEG-4, AVCHDMPEG-4, H.264
Microphone Intruefalse
Headphone Outtruefalse


WiFi ConnectivityBuilt-InBuilt-In
USBUSB 2.0 (480 Mbit/sec)USB 2.0 (480 Mbit/sec)
HDMI Outtruetrue


Camera Weight474g410g
Body Dimensions127 x 94 x 48mm122 x 84 x 50mm
Environmental Sealingtruefalse
Water Prooffalsefalse
Dust Prooffalsefalse
Shock Prooffalsefalse
Crush Prooffalsefalse
Freeze Prooffalsefalse
Battery ModelNP-FW50BLS-50
Battery Life340 shots330 shots
Battery TypeBattery PackBattery Pack

Other Features

TimelapseWith downloadable apptrue
Self TimerYes (2 or 10 sec; continuous (3 or 5 exposures))Yes (2 or 12 secs, custom)
Storage TypeSD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG DuoSD/SDHC/SDXC (UHS-I/II supported)
Storage Slots11