Canon EOS R 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.

EOS R vs Alpha A7R III - Side by side

Learn more about compared cameras specifications below.

Canon EOS R vs Sony Alpha A7R III Specs

EOS R

  • Introduced in September 2018
  • Mirrorless
  • Sensor: Full frame
  • 31 megapixel
  • 5 frames/second
  • 100 - 40000 ISO
  • 3840 x 2160 Video
  • Viewfinder: Elektronic
  • 80.00mm (3.1") Monitor, articulated
  • Lens mount R Mount
  • WiFi built-in
  • 135.8 x 98.3 x 84.4mm³ (5.3" x 3.9" x 3.3")
  • 660g (21.3 oz.)

All specs: Main page for EOS R

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

EOS R 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:

Info graphic: EOS R an Alpha A7R III sensor comparison

EOS R vs Alpha A7R III: Viewfinder

EOS R has an electronic viewfinder and it's resolution is 3.68 megapixel with magnification of 0.76x.

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.

EOS R (0.76x)

Alpha A7R III (0.78x)

Simulated viewfinder of the EOS RSimulated viewfinder of the Alpha A7R III

Better choice: Sony Alpha A7R III

Canon EOS R VS Sony Alpha A7R III Other Specs Comparison

Why is Canon EOS R a better choice

EOS R

Alpha A7R III

Auto Focus points (4)5955399
Better sensibility (4)100 - 40000 ISO100 - 32000 ISO
Better monitor (2, Megapixel)2.101.44

Conclusion: Advantages of the EOS R are the faster and more accurate auto focus, the larger sensitivity and that the display has a higher resolution.

The EOS R scores 10 points.

Otherwise why to choose Sony Alpha A7R III

EOS R

Alpha A7R III

Wider resolution (5, megapixel)31.3042.40
Higher speed (4, frames/second)510
Better viewfinder (4, Megapixel)3.683.69
Larger lens selection (3)450
Image stabilizer (3)
Longer battery life (3, photos)370650
More portable (2)1127cm³
(71 cu.in.)
894cm³
(56 cu.in.)

Conclusion: Advantages of the Alpha A7R III are the higher resolution, that the camera is faster and the better viewfinder. We also like the larger selection of lenses, the optical image stabilizer and that the battery has more stamina. Another advantage over the EOS R: the more compact size.

Yields 24 points for the Alpha A7R III.

Common Specs for both cameras compared

EOS R

Alpha A7R III

Sensor formatFull frameFull frame
Sensor cleaning
Articulated screen
Touch screen
Video resolution3840 x 21603840 x 2160
External microphone
Similar weight660g657g
WiFi
Environmental sealing
Canon EOS R VS Sony Alpha A7R III Dimensions

Look at front view of the EOS R and Alpha A7R III

EOS R und Alpha A7R III, front viewEOS R und Alpha A7R III, front view

Top view of cameras

EOS R und Alpha A7R III, view from aboveEOS R und Alpha A7R III, view from above

Total scores

Here's the total score according to comparison above:

Canon EOS R

Sony Alpha A7R III

10
24

We recommend Sony Alpha A7R III as better choice.

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