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Sony A6400 vs Sony FX3

Portability
83
Imaging
69
Features
88
Overall
76
Sony Alpha a6400 front
 
Sony FX3 front
Portability
62
Imaging
65
Features
92
Overall
75

Sony A6400 vs Sony FX3 Key Specs

Sony A6400
(Full Review)
  • 24MP - APS-C Sensor
  • 3" Tilting Display
  • ISO 100 - 32000 (Expand to 102400)
  • 3840 x 2160 video
  • Sony E Mount
  • 403g - 120 x 67 x 50mm
  • Launched January 2019
Sony FX3
(Full Review)
  • 12MP - Full frame Sensor
  • 3.00" Fully Articulated Display
  • ISO 80 - 102400 (Expand to 409600)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Maximum Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 716g - 130 x 78 x 85mm
  • Announced February 2021
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Sony A6400 vs Sony FX3 Overview

Below, we are matching up the Sony A6400 vs Sony FX3, former being a Advanced Mirrorless while the other is a Pro Mirrorless and both of them are built by Sony. There is a noticeable difference between the resolutions of the A6400 (24MP) and FX3 (12MP) and the A6400 (APS-C) and FX3 (Full frame) possess different sensor sizes.

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The A6400 was announced 3 years before the FX3 and that is quite a sizable difference as far as tech is concerned. Both the cameras come with the identical body type (Rangefinder-style mirrorless).

Before diving through a in depth comparison, below is a concise view of how the A6400 matches up vs the FX3 for portability, imaging, features and an overall grade.

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Reasons to pick Sony A6400 over the Sony FX3

 A6400 FX3 

Reasons to pick Sony FX3 over the Sony A6400

 FX3 A6400 
AnnouncedFebruary 2021January 2019More recent by 25 months
Display typeFully articulatedTiltingFully Articulating display
Display resolution1440k922kClearer display (+518k dot)

Common features in the Sony A6400 and Sony FX3

 A6400 FX3 
Focus manually Dial precise focus
Display dimension3"3.00"Identical display dimensions
Selfie screen Both good for selfies
Touch friendly display Easily navigate

Sony A6400 vs Sony FX3 Physical Comparison

For those who are intending to lug around your camera frequently, you're going to have to take into account its weight and measurements. The Sony A6400 offers physical measurements of 120mm x 67mm x 50mm (4.7" x 2.6" x 2.0") accompanied by a weight of 403 grams (0.89 lbs) and the Sony FX3 has proportions of 130mm x 78mm x 85mm (5.1" x 3.1" x 3.3") accompanied by a weight of 716 grams (1.58 lbs).

Check the Sony A6400 vs Sony FX3 in our brand new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an ILC will change dependant on the lens you choose at the time. Underneath is the front view measurements comparison of the A6400 against the FX3.

Sony A6400 vs Sony FX3 size comparison

Factoring in size and weight, the portability grade of the A6400 and FX3 is 83 and 62 respectively.

Sony A6400 vs Sony FX3 top view buttons comparison

Sony A6400 vs Sony FX3 Sensor Comparison

Usually, its difficult to visualize the gap between sensor measurements only by reviewing a spec sheet. The photograph below should give you a better sense of the sensor measurements in the A6400 and FX3.

As you can see, both cameras posses different megapixel count and different sensor measurements. The A6400 having a tinier sensor is going to make shooting shallower DOF trickier and the Sony A6400 will deliver more detail with its extra 12MP. Greater resolution will allow you to crop pics somewhat more aggressively. The older A6400 is going to be disadvantaged in sensor tech.

Sony A6400 vs Sony FX3 sensor size comparison

Sony A6400 vs Sony FX3 Screen and ViewFinder

Sony A6400 vs Sony FX3 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Sony A6400 Portrait photography advice
Sony FX3 Portrait photography advice
81
focusing manually
MP count good (24 megapixels)
nice sensor size (APS-C)
offers face detection focusing
delivers RAW formats
71
manual focus
great sensor size (Full frame)
features face detection focusing
supports RAW formats
resolution not great (12 megapixels)
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Street Comparison

Sony A6400 Street photography details
Sony FX3 Street photography details
81
screen tilts
nice sensor size (APS-C)
delivers RAW formats
supports focus via touch
environment proofing
great high ISO (32,000)
no image stabilization
76
image stabilization (Sensor based 5-axis)
great sensor size (Full frame)
supports RAW formats
includes focus by touch
weather proof
above average ISO range (102,400)
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Sports Comparison

Sony A6400 Sports photography features
Sony FX3 Sports photography features
76
MP count good (24MP)
nice sensor size (APS-C)
offers tracking autofocus
environment proofing
supports phase detect AF
no image stabilization
76
maximum shutter speed is high (1/8,000 seconds)
image stabilization (Sensor based 5-axis)
great sensor size (Full frame)
features tracking autofocus
weather proof
good battery pack (600 CIPA)
has phase detect AF
resolution not great (12MP)
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Travel Comparison

Travel photography with Sony A6400
Travel photography with Sony FX3
87
environment proofing
has bluetooth
supports focus via touch
MP count good (24 megapixels)
has built in flash
selfie friendly display
71
good battery pack (600 CIPA)
weather proof
supports bluetooth
includes focus by touch
display is selfie friendly
resolution not great (12MP)
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Landscape Comparison

Sony A6400 Landscape photography advice
Sony FX3 Landscape photography advice
80
focusing manually
switch lenses (Sony E mount)
screen size is good (3")
MP count good (24 megapixels)
nice sensor size (APS-C)
great high ISO (32,000)
delivers RAW formats
environment proofing
no image stabilization
77
manual focus
interchangeable lenses (Sony E mount)
screen is a good size (3.00 inches)
image stabilization (Sensor based 5-axis)
great sensor size (Full frame)
above average ISO range (102,400)
supports RAW formats
weather proof
good battery pack (600 per charge)
two card slots
resolution not great (12 megapixels)
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Vlogging Comparison

Sony A6400 as a Vlogging camera
Sony FX3 as a Vlogging camera
80
selfie friendly display
touch screen
offers face detection focusing
high res video (3840 x 2160 pxls)
comes with external mic support
no image stabilization
77
display is selfie friendly
touchscreen enabled
image stabilization (Sensor based 5-axis)
features face detection focusing
good video quality (3840 x 2160 pixels)
has external microphone socket
Photography Glossary

Sony A6400 vs Sony FX3 Specifications

Detailed spec comparison table for Sony A6400 and Sony FX3
 Sony Alpha a6400Sony FX3
General Information
Make Sony Sony
Model type Sony Alpha a6400 Sony FX3
Type Advanced Mirrorless Pro Mirrorless
Launched 2019-01-15 2021-02-23
Physical type Rangefinder-style mirrorless Rangefinder-style mirrorless
Sensor Information
Chip Bionz X -
Sensor type CMOS BSI-CMOS
Sensor size APS-C Full frame
Sensor measurements 23.5 x 15.6mm 35.6 x 23.8mm
Sensor surface area 366.6mm² 847.3mm²
Sensor resolution 24 megapixel 12 megapixel
Anti alias filter
Aspect ratio 1:1, 3:2 and 16:9 3:2 and 16:9
Highest Possible resolution 6000 x 4000 4240 x 2832
Maximum native ISO 32000 102400
Maximum enhanced ISO 102400 409600
Lowest native ISO 100 80
RAW images
Lowest enhanced ISO - 50
Autofocusing
Focus manually
Touch focus
AF continuous
AF single
Tracking AF
AF selectice
AF center weighted
Multi area AF
Live view AF
Face detect AF
Contract detect AF
Phase detect AF
Total focus points 425 759
Lens
Lens support Sony E Sony E
Amount of lenses 121 187
Crop factor 1.5 1
Screen
Display type Tilting Fully articulated
Display diagonal 3 inches 3.00 inches
Resolution of display 922k dots 1,440k dots
Selfie friendly
Liveview
Touch function
Viewfinder Information
Viewfinder Electronic None
Viewfinder resolution 2,359k dots -
Viewfinder coverage 100 percent -
Viewfinder magnification 0.7x -
Features
Min shutter speed 30 seconds 30 seconds
Max shutter speed 1/4000 seconds 1/8000 seconds
Continuous shutter rate 11.0 frames per second 10.0 frames per second
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes Yes
Change WB
Image stabilization
Integrated flash
Flash distance 6.00 m (at ISO 100) no built-in flash
Flash options Off, auto, on, slow sync, rear sync, redeye reduction, wireless, hi-speed sync no built-in flash
External flash
AE bracketing
WB bracketing
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions 3840 x 2160 @ 30p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM 3840 x 2160 @ 120p / 280 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 100p / 280 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 60p / 200 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 50p / 200 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 30p / 140 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 25p / 140 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 24p / 100 Mbps, XAVC S, MP4, H.265, Linear PCM 1920 x 1080 @ 120p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 100p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 60p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 50p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 25p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 24p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM
Maximum video resolution 3840x2160 3840x2160
Video format MPEG-4, H.264, XAVC-S MPEG-4, XAVC S, XAVC HS, XAVC S-1, H.264, H.265
Microphone port
Headphone port
Connectivity
Wireless Built-In Built-In
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 3.2 Gen 1 (5 GBit/sec)
GPS None None
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 403 gr (0.89 lb) 716 gr (1.58 lb)
Dimensions 120 x 67 x 50mm (4.7" x 2.6" x 2.0") 130 x 78 x 85mm (5.1" x 3.1" x 3.3")
DXO scores
DXO Overall rating 83 85
DXO Color Depth rating 24.0 24.2
DXO Dynamic range rating 13.6 13.4
DXO Low light rating 1431 3900
Other
Battery life 410 photos 600 photos
Type of battery Battery Pack Battery Pack
Battery ID NP-FW50 NP-FZ100
Self timer Yes Yes (2 or 10 sec; continuous (3 or 5 exposures))
Time lapse recording With downloadable app
Type of storage SD/SDHC/SDXC/Memory Stick DUO (UHS-I compliant) Dual SD/CFexpress Type A slots
Card slots Single Dual
Retail pricing $898 $3,900