Canon EOS R vs Sony Alpha A9 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 A9 - Side by side

Learn more about compared cameras specifications below.

Canon EOS R vs Sony Alpha A9 Specs


  • 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 A9

  • Introduced in May 2017
  • Mirrorless
  • Sensor: Full frame
  • 24 megapixel
  • 20 frames/second
  • 100 – 51200 ISO
  • 3840 x 2160 Video
  • Viewfinder: Elektronic
  • 75.00mm (3.0″) Monitor, articulated
  • Lens mount E Mount
  • WiFi built-in
  • 126.9 x 95.6 x 63mm³ (5.0″ x 3.8″ x 2.5″)
  • 673g (21.7 oz.)

All specs: Main page for Alpha A9

EOS R vs Alpha A9 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 A9 sensor comparison

EOS R vs Alpha A9: Viewfinder

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

Alpha A9 has an electronic viewfinder with resolution 3.68 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 A9 (0.78x)

Better choice: Sony Alpha A9

Canon EOS R VS Sony Alpha A9 Other Specs Comparison

Why is Canon EOS R a better choice


Alpha A9

Wider resolution (5, megapixel)

31.30 24.20
Auto Focus points (4)

5955 693
Better monitor (2, Megapixel)

2.10 1.44
USB 3.0 (2)

Conclusion: Advantages of the EOS R are the higher resolution, the faster and more accurate auto focus and that the display has a higher resolution. A nice touch is the support for USB 3.0. HArdly a luxury, given today’s image size and the requirements of 4K video.

The EOS R scores 13 points.

Otherwise why to choose Sony Alpha A9


Alpha A9

Higher speed (4, frames/second)

5 20
Better sensibility (4)

100 – 40000 ISO 100 – 51200 ISO
Larger lens selection (3)

4 50
Image stabilizer (3)

Longer battery life (3, photos)

370 650
More portable (2)


Conclusion: Advantages of the Alpha A9 are that the camera is faster, the larger sensitivity and the larger selection of lenses. We also like the optical image stabilizer, that the battery has more stamina and the more compact size.

Yields 19 points for the Alpha A9.

Common Specs for both cameras compared


Alpha A9

Sensor format

Full frame Full frame
Sensor cleaning

Articulated screen

Touch screen

Video resolution

3840 x 2160 3840 x 2160
External microphone

Similar weight

660g 673g

Environmental sealing

Canon EOS R VS Sony Alpha A9 Dimensions

Look at front view of the EOS R and Alpha A9

Top view of cameras

Total scores

Here’s the total score according to comparison above:

Canon EOS R

Sony Alpha A9


We recommend Sony Alpha A9 as better choice.