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Fujifilm X-T20 vs Sony A7 III Comparison

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Camera to replace
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Fujifilm X-T20

24 MP | APS-C (23.6 x 15.6 mm) CMOS X-TRANS III Sensor

Fujifilm X-T20
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Sony A7 III

24 MP | Full frame (35.8 x 23.8 mm) BSI-CMOS Sensor

Sony A7 III
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Fujifilm X-T20 vs Sony A7 III Comparison Overview

Here we are comparing two Mirrorless cameras from Fujifilm and Sony. Fujifilm X-T20 was introduced to market in January 2017 and Sony A7 III was launched in February 2018. There is 13 months difference between X-T20 and A7 III so we don't expect to see a huge technology difference between these two cameras but it would still give an advantage to younger A7 III, especially in sensor tech.

Both cameras have 24.0MP sensors but Fujifilm X-T20's sensor is APS-C sized whereas Sony A7 III has a Full frame sensor.

Here is a brief look at the main features of Fujifilm X-T20 and Sony A7 III before getting into our more detailed comparison.

Fujifilm X-T20 Key Specs

  • Announcement Date: 2017-01-18
  • 24MP - APS-C CMOS X-TRANS III Sensor
  • No Anti-aliasing (AA) filter
  • ISO 200 - 12800 ( expands to 100-51200)
  • Fujifilm X Mount
  • 3" Tilting Screen
  • 2360k dot Electronic viewfinder
  • 14 fps continuous shooting
  • 4K (UHD) - 3840 x 2160 video resolution
  • Built-in Wireless
  • 383g. 118 x 83 x 41 mm
  • Replaced Fujifilm X-T10 Compare

Sony A7 III Key Specs

  • Announcement Date: 2018-02-27
  • 24MP - Full frame BSI-CMOS Sensor
  • ISO 100 - 51200 ( expands to 50-204800)
  • Sony E Mount
  • Sensor-shift Image Stabilization
  • 3 Tilting Screen
  • 2360k dot Electronic viewfinder
  • 10.0 fps continuous shooting
  • 4K (UHD) - 3840 x 2160 video resolution
  • 120fps High-Speed Video
  • Built-in Wireless
  • 650g. 127 x 96 x 74 mm
  • Weather Sealed Body
  • Replaced Sony Alpha 7 II Compare

Fujifilm X-T20 was replaced by Fujifilm X-T30. You may also be interested in these comparisons:
Fujifilm X-T30 vs Fujifilm X-T20
Fujifilm X-T30 vs Sony Alpha A7 III

Let's read on the following sections in order to better understand in detail how Fujifilm X-T20 and Sony A7 III compares and hopefully end up with enough arguments to decide which one is better for you.

Reasons to choose Fujifilm X-T20 over Sony Alpha A7 III
Built-in Flash
Yes vs No Useful in low-light
Continuous Shooting
14.0fps vs 10.0fps 4 fps faster
Weight
383 g vs 650 g 267 g lighter


Reasons to choose Sony Alpha A7 III over Fujifilm X-T20
Image Stabilization
Sensor-shift vs None Sharper images at longer focal lengths and long exposures
Viewfinder Magnification
0.78x vs 0.62x Larger Viewfinder
Max ISO
51.200 vs 12.800 300% higher Max ISO
Number of Focus Points
693 vs 325 368 more focus points
Max Mech. Shutter
1/8000s vs 1/4000s faster mechanical shutter
Battery Life
610 shots vs 350 shots 260 more frames with a single charge
Headphone Port
Yes vs No better video control
Environmental Sealing
Yes vs No shoot at tough conditions
Sensor Pixel Area
35.50µm2 vs 15.34µm2 131% larger pixel area
AE Bracketing Range
±5 EV vs ±3 EV Wide Bracketing range is useful for HDR
NFC Connection
Yes vs No Easy wireless connectivity with compatible devices
Bluetooth
Yes vs No Connect your camera to other devices via Blueetooth
Storage Slot
2 vs 1 Extra storage slot
Animal Eye AF Tracking
Yes vs No Easily lock and track focus on animals
Webcam Function
Yes vs No Use your camera as a Webcam
Anti Flicker
Yes vs No Reduced uneven color and exposure under flickering light
Eye Tracking Focus
Yes vs No Autofocus system locks on the eye and tracks the subject

Common Strengths of Fujifilm X-T20 and Sony Alpha A7 III
Wireless Connection
Yes vs Yes Better connectivity
Adjustable LCD Screen
Tilting vs Tilting Flexible shooting positions
External Flash Shoe
Yes vs Yes Better for flash photography
Touch Screen
Yes vs Yes Easy control of camera functions
Viewfinder
Yes (Electronic) vs Yes (Electronic) Better framing and control
RAW Support
Yes vs Yes Better image quality
Face Detection Focus
Yes vs Yes very handy for portraits
Max Resolution
24 MP vs 24 MP Bigger prints and more details
LCD Screen Resolution
920k dots vs 922k dots High resolution screens
Continuous Shooting
14.0fps vs 10.0fps Fast shooting speeds
Microphone Port
Yes vs Yes High quality audio recording option
Timelapse Recording
Yes vs Yes creative shooting
AE Bracketing
Yes vs Yes Useful for tough lighting conditions and HDR
Smartphone Remote
Yes vs Yes Remote control your camera with a smartphone
UHS Card Support
UHS-II vs UHS-II Read/Write in Ultra High Speeds
Common Weaknesses of Fujifilm X-T20 and Sony Alpha A7 III
Fujifilm X-T20 vs Sony A7 III: Physical Specs and Body features Comparison

Size and weight is a big decision factor when you are trying to find the ideal camera for your needs. In this section, We are going to illustrate Fujifilm X-T20 and Sony A7 III side-by-side from the front, back and top in their relative dimensions. Fujifilm X-T20 has external dimensions of 118 x 83 x 41 mm (4.65 x 3.27 x 1.61″) and weighs 383 g (0.84 lb / 13.51 oz) (including batteries). Sony A7 III has external dimensions of 127 x 96 x 74 mm (5 x 3.78 x 2.91″) and weighs 650 g (1.43 lb / 22.93 oz) (including batteries).

Below you can see the front view size comparison of Fujifilm X-T20 and Sony A7 III. Fujifilm X-T20 is clearly the smaller of the two cameras. Its body is 9mm narrower, 13mm shorter and 33mm thinner than Sony A7 III.

Fujifilm X-T20 vs Sony A7 III Camera Size Comparison - Front View
Comparison image of Fujifilm X-T20 and Sony A7 III Size, Weight and External Dimensions - Front View

Here is the back view size comparison of Fujifilm X-T20 and Sony A7 III.

Fujifilm X-T20 vs Sony A7 III Camera Size Comparison - Back View
Comparison image of Fujifilm X-T20 and Sony A7 III Size and Weight - Back View

Now lets look at the top view comparison of Fujifilm X-T20 and Sony A7 III.
Fujifilm X-T20 vs Sony A7 III Camera Size Comparison - Top View
Top View Comparison image of Fujifilm X-T20 and Sony A7 III Size

Weight is another important factor especially when deciding on a camera that you want to carry with you all day. Fujifilm X-T20 is significantly lighter (267g ) than the Sony A7 III which may become a big advantage especially on long walking trips.

Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you have to also take into account the lenses that you will be using with these bodies. Since Sony A7 III has a Full frame sensor and Fujifilm X-T20 has a smaller APS-C sensor, Fujifilm X-T20's lenses for a similar focal length and aperture will generally be lighter and smaller than the Sony A7 III lenses.

Weight Comparison

Mirrorless Cameras

X-T20
A7 III
Min
Average
Max
Thickness Comparison

Mirrorless Cameras

X-T20
A7 III
Min
Average
Max

Weather Sealing

Thanks to the weather sealed body of A7 III, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to X-T20.

LCD Screen Size and Features

Fujifilm X-T20 and Sony A7 III's LCD screens has the same diagonal size of 3".

Both cameras feature Tilting screens where you can change the angle of the screen to make it easier to shoot from waist or over the head levels.
Fujifilm X-T20 vs Sony A7 III: Sensor Comparison

Both Fujifilm X-T20 and Sony A7 III have 24.0 MP resolution sensors but Fujifilm X-T20's sensor is APS-C (23.6 x 15.6 mm ) and Sony A7 III's sensor is Full frame (35.8 x 23.8 mm ).

Since Sony A7 III's has a larger sensor area with the same resolution, this means that it also has a larger pixel area hence better light collecting capacity for a given aperture compared to Fujifilm X-T20.

Another difference between these two cameras is that Fujifilm X-T20's sensor lacks anti-alias (Low-Pass) filter. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moire occurring in certain scenes.

Below you can see the X-T20 and A7 III sensor size comparison.

Fujifilm X-T20 vs Sony A7 III Sensor Size Comparison
Sensor Size and Resolution Comparison image of Fujifilm X-T20 and Sony A7 III Cameras


As seen above, Sony A7 III has a 2.3x Larger sensor area than Fujifilm X-T20. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.

Fujifilm X-T20 vs Sony A7 III Comparison of Available Lenses
Which camera has more lenses?

Number of available lenses is a big decision factor while choosing your interchangeable lens camera. When we look at the available lenses for these two cameras, we see that Sony A7 III has an advantage over Fujifilm X-T20 There are 142 lenses for Sony A7 III's Sony E mount, on the other hand there are only 58 lenses for Fujifilm X-T20's Fujifilm X lens mount.

Another important factor is the availability of image stabilization. Sony A7 III has a big advantage in this regard because it has a sensor based image stabilization which means that all the lenses mounted to this body will be stabilized. X-T20's built-in Image stabilization system is effective to compnesate vibration up to 5.0-stops according to CIPA standards.
14 lenses for Fujifilm X mount with Optical Image Stabilization features.

Lens Type # of Fujifilm X-T20 Lenses # of Sony A7 III Lenses
Standard Zoom 6 13 (10 Full Frame)
Standard Prime 14 23 (13 Full Frame)
Wideangle Zoom 3 8 (7 Full Frame)
Wideangle Prime 18 46 (30 Full Frame)
Telephoto Zoom 6 10 (8 Full Frame)
Telephoto Prime 5 19 (15 Full Frame)
SuperZoom 1 9 (2 Full Frame)
Wideangle Fisheye Prime 1 2 (0 Full Frame)
Macro Prime 2 8 (7 Full Frame)
Perspective Control Prime 2 2 (2 Full Frame)
Telephoto Mirror Prime n/a n/a
TOTAL 58 142 (94 Full Frame)


Now let's compare some sample lenses from each mount with typical Focal ranges for Fujifilm X-T20 and Sony A7 III to see how these lenses compares:

Fast Standard Zoom Lenses
Model FF Equiv. Weight Weight w/ Cam Length Street Price
Fujifilm 16-55mm F2.8 R LM WR Lens Fujifilm 16-55mm F2.8 R LM WR
24 - 82.5mm 655gr 1038gr 106mm Amazon B&H Photo
Sony FE 24-70mm F2.8 GM Lens Sony FE 24-70mm F2.8 GM
24 - 70mm 886gr 1536gr 136mm Amazon B&H Photo
Fast Tele Zoom Equivalent Lenses
Model FF Equiv. Weight Weight w/ Cam Length Street Price
Fujifilm 55-200mm F3.5-4.8 R LM OIS Lens Fujifilm 55-200mm F3.5-4.8 R LM OIS
82.5 - 300mm 580gr 963gr 118mm Amazon B&H Photo
Sony FE 70-200mm F2.8 GM OSS Lens Sony FE 70-200mm F2.8 GM OSS
70 - 200mm 1480gr 2130gr 200mm Amazon B&H Photo
Fast Normal Prime Equivalent Lenses
Model FF Equiv. Weight Weight w/ Cam Length Street Price
Fujifilm 35mm F1.4 R Lens Fujifilm 35mm F1.4 R
52.5mm 187gr 570gr 55mm Amazon B&H Photo
Sony FE 50mm F1.4 Lens Sony FE 50mm F1.4
50mm 778gr 1428gr 108mm Amazon B&H Photo
Fast Wideangle Zoom Equivalent Lenses
Model FF Equiv. Weight Weight w/ Cam Length Street Price
Fujifilm XF 10-24mm F4 R OIS Lens Fujifilm XF 10-24mm F4 R OIS
15 - 36mm 410gr 793gr 87mm Amazon B&H Photo
Sony FE 16-35mm F2.8 GM Lens Sony FE 16-35mm F2.8 GM
16 - 35mm 680gr 1330gr 122mm Amazon B&H Photo
24-105mm f4 Equivalent Lenses
Model FF Equiv. Weight Weight w/ Cam Length Street Price
Fujifilm XF 16-80mm F4 R OIS WR Lens Fujifilm XF 16-80mm F4 R OIS WR
24 - 120mm 440gr 823gr 89mm Amazon B&H Photo
Sony FE 24-105mm F4 G OSS Lens Sony FE 24-105mm F4 G OSS
24 - 105mm 663gr 1313gr 113mm Amazon B&H Photo
Super-Tele Zoom Equivalent Lenses
Model FF Equiv. Weight Weight w/ Cam Length Street Price
Fujifilm XF 100-400mm F4.5-5.6 Lens Fujifilm XF 100-400mm F4.5-5.6
150 - 600mm 1375gr 1758gr 211mm Amazon B&H Photo
Sony FE 100-400mm F4.5-5.6 GM OSS Lens Sony FE 100-400mm F4.5-5.6 GM OSS
100 - 400mm 1395gr 2045gr 205mm Amazon B&H Photo
What types of Photography are Fujifilm X-T20 and Sony A7 III Good for?
In this section, we rank and compare Fujifilm X-T20 and Sony A7 III for five different photography types in order to make your decision process easier in case you are specifically interested in one or more of these areas.

Fujifilm X-T20 for Portrait Photography

AVERAGE

Sony A7 III for Portrait Photography

GOOD
Large APS-C (23.6 x 15.6 mm) sensor
Very High Resolution Sensor: 24.0MP
Electronic Built-in Viewfinder
Good Ergonomics&Handling
No Image Stabilization
Read the details
Large Full frame (35.8 x 23.8 mm) sensor
Very High Resolution Sensor: 24.0MP
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Read the details

Fujifilm X-T20 for Street Photography

GOOD

Sony A7 III for Street Photography

EXCELLENT
Large APS-C (23.6 x 15.6 mm) sensor
Electronic Built-in Viewfinder
Live-view
Face-Detection Focusing
Tilting LCD Screen
Medium sized Body
No Image Stabilization
Read the details
Large Full frame (35.8 x 23.8 mm) sensor
Image Stabilization
Electronic Built-in Viewfinder
Live-view
Face-Detection Focusing
Tilting LCD Screen
Medium sized Body
Read the details

Fujifilm X-T20 for Sports Photography

GOOD

Sony A7 III for Sports Photography

GOOD
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Fast Continuous Shooting: 14.0fps
Fast Max shutter speed: 1/4000s
325 Focus Points
Good Low Light ISO
Wireless Connection
No Image Stabilization
Environmental Sealings
Read the details
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Fast Continuous Shooting: 10.0fps
Environmental Sealings
Fast Max shutter speed: 1/8000s
693 Focus Points
Good Battery Life: 610 shots
Good Low Light ISO
Wireless Connection
Anti Flicker feature
Read the details

Fujifilm X-T20 for Daily Photography

GOOD

Sony A7 III for Daily Photography

EXCELLENT
Large APS-C (23.6 x 15.6 mm) sensor
Medium size Body
383g
Body Thickness 41mm
Read the details
Large Full frame (35.8 x 23.8 mm) sensor
Environmental Sealings
Anti Flicker feature
Medium size Body
650g
Body Thickness 74mm
Read the details

Fujifilm X-T20 for Landscape Photography

AVERAGE

Sony A7 III for Landscape Photography

AVERAGE
Large APS-C (23.6 x 15.6 mm) sensor
Very High Resolution Sensor: 24.0MP
Live-view
No Environmental Sealings
Read the details
Large Full frame (35.8 x 23.8 mm) sensor
Very High Resolution Sensor: 24.0MP
Environmental Sealings
Live-view
Read the details

Fujifilm X-T20 vs Sony A7 III: OUR DECISION

You may have already made your decision about which camera suits better for your needs and your budget so far but in case you wonder how we rated Fujifilm X-T20 and Sony A7 III, below you can find their scores in five different aspects. Our Decision Algorithm dynamically scores cameras using 63 different specs, current price and DxO Mark scores (where possible) in order to make a more objective and consistent comparison.

Here is a summary of how Fujifilm X-T20 and Sony A7 III scores compare:

Fujifilm X-T20
Imaging
Features
Value
Portability
Overall
Ranked #54 out of 88 in SLR-style mirrorless cameras
Ranked #114 out of 1225 in all Cameras
Sony A7 III
Imaging
Features
Value
Portability
Overall
Ranked #16 out of 88 in SLR-style mirrorless cameras
Ranked #17 out of 1225 in all Cameras

Sony A7 III is the overall winner of this comparison. It has a higher Overall Score and beats Fujifilm X-T20 in all criteria except one: Portability.
If small size and light body is a big priority for you, choose Fujifilm X-T20. Otherwise, Sony A7 III is the better camera overall.

Fujifilm X-T20
Fujifilm X-T20
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Sony A7 III
Sony A7 III
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Sony A7 III vs Fujifilm X-T20 Specs Table
Detailed comparison of specifications
General Fujifilm X-T20 Sony Alpha A7 III
Brand Fujifilm Sony
Announced 2017-01-18 2018-02-27
Body Type SLR-style mirrorless SLR-style mirrorless
Sensor
Type CMOS X-TRANS III BSI-CMOS
Size APS-C Full frame
Dimensions 23.6 x 15.6 mm 35.8 x 23.8 mm
Area 368.16mm2 852.04mm2
Megapixels 24 megapixels 24 megapixels
Max Resolution 6000 x 4000 6000 x 4000
Max Native Light sensitivity 12,800 ISO 51,200 ISO
Max Boosted Light Sensitivity 51200 ISO 204800 ISO
Min Native Light sensitivity 200 ISO 100 ISO
Min Boosted Light Sensitivity 100 ISO 50 ISO
RAW Support
Autofocus
AF Touch
AF Continuous
AF Single
AF Tracking
AF Selective
AF Center
AF Multi Area
AF Live View
AF Face Detection
AF Contrast Detection
AF Phase Detection
Number of Focus Points 325 693
Lens
Manual Focus
Lens Mount Fujifilm X Sony E
Number of Available Lenses 58 142
Screen
Type Tilting Tilting
Size 3" 3
Resolution 920k dots 922k dots
Touch Screen
Viewfinder
Viewfinder Electronic Electronic
Viewfinder Resolution 2,360k dots 2,360k dots
Viewfinder Coverage 100% 100%
Viewfinder Magnification 0.62x 0.78x
Photography Features
Max Mechanical Shutter 1/4000s 1/8000s
Max Electronic Shutter 1/32000s n/a
Shutter Priority
Aperture Priority
Manual Exposure Mode
Custom White Balance
Image Stabilization No Sensor-shift
Built-in Flash
Flash Range 5.00 m (ISO 100) no built-in flash
Max Flash Sync 1/180s n/a
External Flash
Continuous Shooting 14.0 fps 10.0 fps
Multi-Segment
Average
Spot
Partial
AF-Area
Center Weighted
AE Bracketing
WB Bracketing
Video Features
Max Video Resolution 3840 x 2160 3840 x 2160
Video Formats MPEG-4, H.264 MPEG-4, AVCHD, XAVC S, H.264
Microphone Port
Headphone Port
Connectivity
Wireless Connectivity Built-In Built-In
HDMI
Physical
Environmental Sealing
Weight 383g 650g
Dimensions 118 x 83 x 41mm 127 x 96 x 74mm
Battery Life 350 shots 610 shots
Other Features
Timelapse Recording
GPS Optional None
DxO Sensor Scores
DxO Overall Score not tested 96
DxO Color Depth not tested 25.0
DxO Dynamic Range not tested 14.7
DxO Low Light ISO not tested 3730
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