Canon EOS R vs Sony Alpha A7S Compare

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Cameras which are being compared are Mirrorless cameras.

EOS R vs Alpha A7S - Side by side

Learn more about compared cameras specifications below.

Canon EOS R vs Sony Alpha A7S 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 A7S

  • Introduced in June 2014
  • Mirrorless
  • Sensor: Full frame
  • 12 megapixel
  • 5 frames/second
  • 50 - 409600 ISO
  • 3840 x 2160 Video
  • Viewfinder: Elektronic
  • 76.00mm (3.0") Monitor, articulated
  • Lens mount E Mount
  • WiFi built-in
  • 126.9 x 94.4 x 48.2mm³ (5.0" x 3.7" x 1.9")
  • 489g (15.8 oz.)

All specs: Main page for Alpha A7S

EOS R vs Alpha A7S 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 A7S sensor comparison

EOS R vs Alpha A7S: Viewfinder

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

Alpha A7S has an electronic viewfinder with resolution 2.36 megapixel, it's magnification is 0.71x.

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 A7S (0.71x)

Simulated viewfinder of the EOS RSimulated viewfinder of the Alpha A7S

Better choice: Canon EOS R

Canon EOS R VS Sony Alpha A7S Other Specs Comparison

Why is Canon EOS R a better choice

EOS R

Alpha A7S

Wider resolution (5, megapixel)31.3012.20
Auto Focus points (4)595525
Better viewfinder (4, Megapixel)3.682.36
Better monitor (2, Megapixel)2.100.92
Touch screen (2)
USB 3.0 (2)
Environmental sealing (2)

Conclusion: Advantages of the EOS R are the higher resolution, the faster and more accurate auto focus and the better viewfinder. We also like that the display has a higher resolution, the rather comfortable touch screen and the support for USB 3.0. HArdly a luxury, given today's image size and the requirements of 4K video.

The EOS R scores 19 points.

Otherwise why to choose Sony Alpha A7S

EOS R

Alpha A7S

Better sensibility (4)100 - 40000 ISO50 - 409600 ISO
Larger lens selection (3)450
Longer battery life (3, photos)370380
Weighs less (2)660g
(21.3 oz.)
489g
(15.8 oz.)
More portable (2)1127cm³
(71 cu.in.)
577cm³
(36 cu.in.)

Conclusion: Advantages of the Alpha A7S are the larger sensitivity, the larger selection of lenses and that the battery has more stamina. Another advantage over the EOS R: the lower weight than the EOS R and the more compact size.

Yields 14 points for the Alpha A7S.

Common Specs for both cameras compared

EOS R

Alpha A7S

Sensor formatFull frameFull frame
Speed (frames/second)55
Sensor cleaning
Articulated screen
Video resolution3840 x 21603840 x 2160
External microphone
WiFi
Canon EOS R VS Sony Alpha A7S Dimensions

Look at front view of the EOS R and Alpha A7S

EOS R und Alpha A7S, front viewEOS R und Alpha A7S, front view

Top view of cameras

EOS R und Alpha A7S, view from aboveEOS R und Alpha A7S, view from above

Total scores

Here's the total score according to comparison above:

Canon EOS R

Sony Alpha A7S

19
14

We recommend Canon EOS R as better choice.

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