Sony Alpha A7 vs Olympus OM-D E-M5 II

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-M5 II

Olympus OM-D E-M5 II

16 megapixels, Four Thirds, 17.3 x 13 mm, 3″, 10.0 fps

We compare the Sony Alpha A7 to the Olympus OM-D E-M5 II: Which digital camera has the better sensor? Which has the faster autofocus? Let's found out. The Sony Alpha A7 was announced on the 2014-01-22, while Olympus OM-D E-M5 II on 2015-02-06. Both cameras use the same Electronic viewfinders. The Sony Alpha A7 24 megapixels CMOS Full frame have more megapixels than the Olympus OM-D E-M5 II. Both cameras have the same max ISO values (25,600 vs. 25,600) and have the same flexibility when shooting in low light conditions.

Sony Alpha A7 advantages over Olympus OM-D E-M5 II

  • 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 17.3 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
  • Higher Screen Resolution
    1,230k dots vs 1,037k dots
    The higher the resolution, the more detail you can see on photos
  • More Auto Focus Points
    117 vs 81
    The more of them available, the greater flexibility the photographer has
  • Longer Battery Life
    340 shots vs 310 shots
    Capture more photos

Olympus OM-D E-M5 II 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
    10.0 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
  • Lighter Weight
    469g vs 474g
    A lighter camera is more convenient for travel

Common Strengths

  • Max Native ISO
    25,600 vs 25,600
  • Display Size
    3″ vs 3″
  • Live View
    true vs true
  • Max Video Resolution
    1920 x 1080 vs 1920 x 1080
  • Microphone In
    true vs true
  • Environmental Sealing
    true vs true
  • Storage Slots
    1 vs 1

Sony Alpha A7 vs Olympus OM-D E-M5 II Sensor Comparison

The Sony Alpha A7 24 megapixels CMOS Full frame have more megapixels than the Olympus OM-D E-M5 II (but sensor size is not a perfect indicator of quality). Here you can see the Sony Alpha A7 and Olympus OM-D E-M5 II sensor size comparison.

  • Sensor area 855.62 mm²
  • Pixel pitch 5.97 µm
  • Pixel density 2.81 MP/cm²
Full frame
  • 224.9 mm²
  • 3.75 µm
  • 7.09 MP/cm²
Four Thirds


ModelSony Alpha A7Olympus OM-D E-M5 II
Body TypeSLR-style mirrorlessSLR-style mirrorless

DxO Sensor Scores

DxO Overall Score9073
DxO Color Depth24.823.0
DxO Dynamic Range14.212.4
DxO Low Light ISO2248896


Sensor Resolution24 megapixels16 megapixels
Sensor SizeFull frameFour Thirds
Sensor Dimensions35.8 x 23.9 mm17.3 x 13 mm
Sensor Area855.62mm2224.90mm2
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 Magnification0.710.74


Display TypeTiltingFully Articulated
Display TechnologyXtra Fine LCD
Display Size3″3″
Display Resolution1,230k dots1,037k dots
Live Viewtruetrue
Touch Screenfalsetrue

Photography Features

Min Shutter Speed30s60s
Max Shutter Speed1/8000s1/16000s
Continuous Shooting5.0 fps10.0 fps
Shutter Prioritytruetrue
Aperture Prioritytruetrue
Manual Exposure Modetruetrue
Exposure CompensationYesYes
Custom White Balancetruetrue
Image Stabilizationfalsetrue
Built-in Flashfalsefalse
External Flashtruetrue
Flash Rangeno built-in flashno built-in flash
Flash Modesno built-in flashAuto, redeye, fill, off, redeye slow sync, slow sync, 2nd-curtain slow sync, manual
Max Flash Sync1/250s
WB Bracketingtruetrue
AE Bracketingtruetrue

Exposure Modes

Center Weightedtruetrue


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 Points11781
Number of Cross Focus Points25Unknown

Video Features

Video Resolutions1920 x 1080 (60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p)1920 x 1080 (60p, 50p, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p, 24p), 640 x 480 (30p)
Max Video Resolution1920 x 10801920 x 1080
Video FormatsMPEG-4, AVCHDMPEG-4, H.264, Motion JPEG
Microphone Intruetrue
Headphone Outtruefalse


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


Camera Weight474g469g
Body Dimensions127 x 94 x 48mm124 x 85 x 45mm
Environmental Sealingtruetrue
Water Prooffalsefalse
Dust Prooffalsefalse
Shock Prooffalsefalse
Crush Prooffalsefalse
Freeze Prooffalsefalse
Battery ModelNP-FW50BLN-1
Battery Life340 shots310 shots
Battery TypeBattery PackBattery Pack

Other Features

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