Olympus OM-D E-M1X vs Sony Alpha A7R III Compare

Here you can find digital cameras comparison. Pick up with the best rating.

Cameras which are being compared are Mirrorless cameras.

OM-D E-M1X vs Alpha A7R III - Side by side

Learn more about compared cameras specifications below.

Olympus OM-D E-M1X vs Sony Alpha A7R III Specs

OM-D E-M1X

  • Introduced in January 2019
  • Mirrorless
  • Sensor: Four Thirds
  • 20 megapixel
  • 18 frames/second
  • 64 - 25600 ISO
  • 4096 x 2160 Video
  • Viewfinder: Elektronic
  • 76.00mm (3.0") Monitor, articulated
  • Lens mount Micro Four Thirds (MFT)
  • WiFi built-in
  • 144.4 x 156.8 x 75.4mm³ (5.7" x 6.2" x 3.0")
  • 997g (32.2 oz.)

All specs: Main page for OM-D E-M1X

Alpha A7R III

  • Introduced in October 2017
  • Mirrorless
  • Sensor: Full frame
  • 42 megapixel
  • 10 frames/second
  • 100 - 32000 ISO
  • 3840 x 2160 Video
  • Viewfinder: Elektronic
  • 76.00mm (3.0") Monitor, articulated
  • Lens mount E Mount
  • WiFi built-in
  • 126.9 x 95.6 x 73.7mm³ (5.0" x 3.8" x 2.9")
  • 657g (21.2 oz.)

All specs: Main page for Alpha A7R III

OM-D E-M1X vs Alpha A7R III Sensors

On the pictures below the sensor areas of cameras are highlighted.

This infographic highlights the sensor areas of both models compared to other common sensor formats:

Infographic: OM-D E-M1X and Alpha A7R III sensor area comparisonAdvantage: Sony Alpha A7R III

OM-D E-M1X vs Alpha A7R III: Viewfinder

OM-D E-M1X has an electronic viewfinder and it's resolution is 2.36 megapixel with magnification of 0.83x.

Alpha A7R III has an electronic viewfinder with resolution 3.69 megapixel, it's magnification is 0.78x.

Viewfinder magnifications of compared cameras. The black area shows a magnification of 1x, relative to native size; in red is a magnification of 0.85x.

OM-D E-M1X (0.83x)

Alpha A7R III (0.78x)

Simulated viewfinder of the OM-D E-M1XSimulated viewfinder of the Alpha A7R III

Note: Differences in the image area are the result of different image ratios, 3:2 or 4:3. That can make it difficult to compare the viewfinder magnification of both cameras.

Olympus OM-D E-M1X VS Sony Alpha A7R III Other Specs Comparison

Why is Olympus OM-D E-M1X a better choice

OM-D E-M1X

Alpha A7R III

Higher speed (4, frames/second)1810
Larger lens selection (3)8050
Better Video (2)4096 x 21603840 x 2160
Longer battery life (3, photos)870650
GPS (2)

Conclusion: Advantages of the OM-D E-M1X are that the camera is faster, the larger selection of lenses and the superior video recording. A recommendation of the OM-D E-M1X is made easy by that the battery has more stamina and the built-in GPS.

The OM-D E-M1X scores 14 points.

Otherwise why to choose Sony Alpha A7R III

OM-D E-M1X

Alpha A7R III

Larger sensor (5)Four ThirdsFull frame
Wider resolution (5, megapixel)20.4042.40
Auto Focus points (4)121399
Better sensibility (4)64 - 25600 ISO100 - 32000 ISO
Better viewfinder (4, Megapixel)2.363.69
Better monitor (2, Megapixel)1.041.44
Weighs less (2)997g
(32.2 oz.)
657g
(21.2 oz.)
More portable (2)1707cm³
(108 cu.in.)
894cm³
(56 cu.in.)

Conclusion: Advantages of the Alpha A7R III are the larger sensor, the higher resolution and the faster and more accurate auto focus. Additional pros for the Sony are the larger sensitivity, the better viewfinder and that the display has a higher resolution. A nice touch is the lower weight than the OM-D E-M1X and the more compact size.

Yields 28 points for the Alpha A7R III.

Common Specs for both cameras compared

OM-D E-M1X

Alpha A7R III

Sensor cleaning
Image stabilizer
Articulated screen
Touch screen
External microphone
WiFi
Environmental sealing
Olympus OM-D E-M1X VS Sony Alpha A7R III Dimensions

Look at front view of the OM-D E-M1X and Alpha A7R III

OM-D E-M1X und Alpha A7R III, front viewOM-D E-M1X und Alpha A7R III, front view

Top view of cameras

OM-D E-M1X und Alpha A7R III, view from aboveOM-D E-M1X und Alpha A7R III, view from above

Total scores

Here's the total score according to comparison above:

Olympus OM-D E-M1X

Sony Alpha A7R III

14
28

We recommend Sony Alpha A7R III as better choice.

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