Fujifilm X-T3 vs Sony Alpha A7S Compare

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Cameras which are being compared are Mirrorless cameras.

X-T3 vs Alpha A7S - Side by side

Learn more about compared cameras specifications below.

Fujifilm X-T3 vs Sony Alpha A7S Specs


  • Introduced in September 2018
  • Mirrorless
  • Sensor: APS-C
  • 26 megapixel
  • 20 frames/second
  • 160 - 12800 ISO
  • 3840 x 2160 Video
  • Viewfinder: Elektronic
  • 76.00mm (3.0") Monitor, articulated
  • Lens mount X-Bajonett
  • WiFi built-in
  • 132.5 x 92.8 x 58.8mm³ (5.2" x 3.7" x 2.3")
  • 539g (17.4 oz.)

All specs: Main page for X-T3

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

X-T3 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:

Infographic: X-T3 and Alpha A7S sensor area comparisonAdvantage: Sony Alpha A7S

X-T3 vs Alpha A7S: Viewfinder

X-T3 has an electronic viewfinder and it's resolution is 3.69 megapixel with magnification of 0.75x.

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.

X-T3 (0.75x)

Alpha A7S (0.71x)

Simulated viewfinder of the X-T3Simulated viewfinder of the Alpha A7S

Better choice: Fujifilm X-T3

Fujifilm X-T3 VS Sony Alpha A7S Other Specs Comparison

Why is Fujifilm X-T3 a better choice


Alpha A7S

Wider resolution (5, megapixel)26.1012.20
Higher speed (4, frames/second)205
Auto Focus points (4)42525
Better viewfinder (4, Megapixel)3.692.36
Better monitor (2, Megapixel)1.040.92
Touch screen (2)
Longer battery life (3, photos)390380
USB 3.0 (2)
Environmental sealing (2)

Conclusion: Advantages of the X-T3 are the higher resolution, that the camera is faster and the faster and more accurate auto focus. Additional pros for the Fujifilm are the better viewfinder, that the display has a higher resolution and the rather comfortable touch screen. A recommendation of the X-T3 is made easy by that the battery has more stamina, the support for USB 3.0. HArdly a luxury, given today's image size and the requirements of 4K video.

The X-T3 scores 26 points.

Otherwise why to choose Sony Alpha A7S


Alpha A7S

Larger sensor (5)APS-CFull frame
Better sensibility (4)160 - 12800 ISO50 - 409600 ISO
Larger lens selection (3)2550
More portable (2)723cm³
(46 cu.in.)
(36 cu.in.)

Conclusion: Advantages of the Alpha A7S are the larger sensor, the larger sensitivity and the larger selection of lenses. We also like the more compact size.

Yields 14 points for the Alpha A7S.

Common Specs for both cameras compared


Alpha A7S

Sensor cleaning
Articulated screen
Video resolution3840 x 21603840 x 2160
External microphone
Similar weight539g489g
Fujifilm X-T3 VS Sony Alpha A7S Dimensions

Look at front view of the X-T3 and Alpha A7S

X-T3 und Alpha A7S, front viewX-T3 und Alpha A7S, front view

Top view of cameras

X-T3 und Alpha A7S, view from aboveX-T3 und Alpha A7S, view from above

Total scores

Here's the total score according to comparison above:

Fujifilm X-T3

Sony Alpha A7S


We recommend Fujifilm X-T3 as better choice.

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