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Sony A9 II vs Sony A6400

Portability
62
Imaging
75
Features
93
Overall
82
Sony Alpha A9 Mark II front
 
Sony Alpha a6400 front
Portability
83
Imaging
69
Features
88
Overall
76

Sony A9 II vs Sony A6400 Key Specs

Sony A9 II
(Full Review)
  • 24MP - Full frame Sensor
  • 3" Tilting Screen
  • ISO 100 - 51200 (Boost to 204800)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Maximum Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 678g - 129 x 96 x 76mm
  • Introduced October 2019
  • Older Model is Sony A9
Sony A6400
(Full Review)
  • 24MP - APS-C Sensor
  • 3" Tilting Screen
  • ISO 100 - 32000 (Expand to 102400)
  • 3840 x 2160 video
  • Sony E Mount
  • 403g - 120 x 67 x 50mm
  • Launched January 2019
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Sony A9 II vs Sony A6400 Overview

Here is a complete overview of the Sony A9 II versus Sony A6400, one being a Pro Mirrorless and the latter is a Advanced Mirrorless and both of them are created by Sony. The resolution of the A9 II (24MP) and the A6400 (24MP) is pretty close but the A9 II (Full frame) and A6400 (APS-C) feature different sensor size.

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The A9 II was revealed 9 months later than the A6400 and they are both of a similar generation. Both the cameras come with different body type with the Sony A9 II being a SLR-style mirrorless camera and the Sony A6400 being a Rangefinder-style mirrorless camera.

Before getting straight into a thorough comparison, below is a short highlight of how the A9 II matches up versus the A6400 for portability, imaging, features and an overall rating.

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Reasons to pick Sony A9 II over the Sony A6400

 A9 II A6400 
LaunchedOctober 2019January 2019Fresher by 9 months
Screen resolution1440k922kCrisper screen (+518k dot)

Reasons to pick Sony A6400 over the Sony A9 II

 A6400 A9 II 
Selfie screen Easy selfies

Common features in the Sony A9 II and Sony A6400

 A9 II A6400 
Manually focus Dial exact focus
Screen typeTiltingTiltingTilting screen
Screen dimension3"3"Identical screen size
Touch screen Quickly navigate

Sony A9 II vs Sony A6400 Physical Comparison

For those who are going to carry your camera frequently, you will need to think about its weight and measurements. The Sony A9 II features outside measurements of 129mm x 96mm x 76mm (5.1" x 3.8" x 3.0") along with a weight of 678 grams (1.49 lbs) and the Sony A6400 has proportions of 120mm x 67mm x 50mm (4.7" x 2.6" x 2.0") with a weight of 403 grams (0.89 lbs).

Compare the Sony A9 II versus Sony A6400 in the new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an Interchangeable Lens Camera will differ based on the lens you have at the time. Here is the front view measurements comparison of the A9 II against the A6400.

Sony A9 II vs Sony A6400 size comparison

Using dimensions and weight, the portability grade of the A9 II and A6400 is 62 and 83 respectively.

Sony A9 II vs Sony A6400 top view buttons comparison

Sony A9 II vs Sony A6400 Sensor Comparison

Normally, it's tough to imagine the difference in sensor sizing just by looking through technical specs. The visual here will help give you a stronger sense of the sensor sizing in the A9 II and A6400.

As you have seen, the two cameras have got the exact same megapixels albeit different sensor sizing. The A9 II provides the bigger sensor which is going to make obtaining bokeh simpler. The newer A9 II should have an edge when it comes to sensor innovation.

Sony A9 II vs Sony A6400 sensor size comparison

Sony A9 II vs Sony A6400 Screen and ViewFinder

Sony A9 II vs Sony A6400 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with Sony A9 II
Portrait photography with Sony A6400
85
manual focus
decent MP (24MP)
great sensor size (Full frame)
comes with face detect focus
supports RAW files
81
focusing manually
decent sensor resolution (24 megapixels)
decent sensor size (APS-C)
offers face detect autofocus
exports RAW formats
Photography Glossary

Street Comparison

Street photography with Sony A9 II
Street photography with Sony A6400
78
screen tilts up and down
has image stabilization (Sensor based 5-axis)
great sensor size (Full frame)
supports RAW files
comes with touch to focus
weather sealing
good high ISO (51,200)
81
tilting screen
decent sensor size (APS-C)
exports RAW formats
comes with focus by touch
environment proofing
good ISO range (32,000)
lack of image stabilization
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Sports Comparison

Sports photography with Sony A9 II
Sports photography with Sony A6400
87
max shutter speed is good (1/8,000s)
silent mode (1/32,000s)
fast shooting (20.0 fps)
has image stabilization (Sensor based 5-axis)
decent MP (24MP)
great sensor size (Full frame)
comes with tracking focus
weather sealing
better than average battery pack (690 CIPA)
comes with phase detect auto focus
76
decent sensor resolution (24MP)
decent sensor size (APS-C)
offers tracking focus
environment proofing
comes with phase detect autofocus
lack of image stabilization
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Travel Comparison

Travel photography with Sony A9 II
Travel photography with Sony A6400
73
better than average battery pack (690 per charge)
weather sealing
has bluetooth
comes with touch to focus
decent MP (24MP)
screen isn't selfie friendly
87
environment proofing
supports bluetooth
comes with focus by touch
decent sensor resolution (24MP)
has built in flash
selfie friendly screen
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Landscape Comparison

Landscape photography with Sony A9 II
Landscape photography with Sony A6400
86
manual focus
change lenses (Sony E mount)
screen is a decent size (3 inches)
has image stabilization (Sensor based 5-axis)
decent MP (24 megapixels)
great sensor size (Full frame)
good high ISO (51,200)
supports RAW files
weather sealing
better than average battery pack (690 CIPA)
has dual storage slots
80
focusing manually
change lenses (Sony E mount)
decent sized screen (3 inches)
decent sensor resolution (24 megapixels)
decent sensor size (APS-C)
good ISO range (32,000)
exports RAW formats
environment proofing
lack of image stabilization
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Vlogging Comparison

Sony A9 II Vlogging advice
Sony A6400 Vlogging advice
36
touchscreen functionality
has image stabilization (Sensor based 5-axis)
comes with face detect focus
high res video (3840 x 2160 pxls)
does have mic jack
screen isn't selfie friendly
80
selfie friendly screen
touchscreen functionality
offers face detect autofocus
high quality video (3840 x 2160 pixels)
does have microphone jack
lack of image stabilization
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Sony A9 II vs Sony A6400 Specifications

Detailed spec comparison table for Sony A9 II and Sony A6400
 Sony Alpha A9 Mark IISony Alpha a6400
General Information
Brand Sony Sony
Model type Sony Alpha A9 Mark II Sony Alpha a6400
Type Pro Mirrorless Advanced Mirrorless
Introduced 2019-10-03 2019-01-15
Body design SLR-style mirrorless Rangefinder-style mirrorless
Sensor Information
Processor BIONZ X Bionz X
Sensor type BSI-CMOS CMOS
Sensor size Full frame APS-C
Sensor measurements 35.6 x 23.8mm 23.5 x 15.6mm
Sensor surface area 847.3mm² 366.6mm²
Sensor resolution 24 megapixel 24 megapixel
Anti alias filter
Aspect ratio 3:2 1:1, 3:2 and 16:9
Full resolution 6000 x 4000 6000 x 4000
Max native ISO 51200 32000
Max boosted ISO 204800 102400
Minimum native ISO 100 100
RAW photos
Minimum boosted ISO 50 -
Autofocusing
Focus manually
Autofocus touch
Autofocus continuous
Single autofocus
Tracking autofocus
Selective autofocus
Center weighted autofocus
Multi area autofocus
Autofocus live view
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Total focus points 693 425
Lens
Lens support Sony E Sony E
Available lenses 121 121
Focal length multiplier 1 1.5
Screen
Screen type Tilting Tilting
Screen size 3 inch 3 inch
Resolution of screen 1,440 thousand dot 922 thousand dot
Selfie friendly
Liveview
Touch screen
Viewfinder Information
Viewfinder Electronic Electronic
Viewfinder resolution 3,686 thousand dot 2,359 thousand dot
Viewfinder coverage 100% 100%
Viewfinder magnification 0.78x 0.7x
Features
Lowest shutter speed 30s 30s
Highest shutter speed 1/8000s 1/4000s
Highest silent shutter speed 1/32000s -
Continuous shooting speed 20.0 frames per second 11.0 frames per second
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Set white balance
Image stabilization
Integrated flash
Flash distance no built-in flash 6.00 m (at ISO 100)
Flash settings Flash off, Autoflash, Fill-flash, Slow Sync., Rear Sync., Red-eye reduction, Wireless, Hi-speed sync Off, auto, on, slow sync, rear sync, redeye reduction, wireless, hi-speed sync
External flash
AEB
WB bracketing
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 3840 x 2160 @ 30p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM 3840 x 2160 @ 30p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM
Max video resolution 3840x2160 3840x2160
Video format MPEG-4, AVCHD, H.264 MPEG-4, H.264, XAVC-S
Microphone input
Headphone input
Connectivity
Wireless Built-In Built-In
Bluetooth
NFC
HDMI
USB USB 3.1 Gen 1 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 678g (1.49 lbs) 403g (0.89 lbs)
Dimensions 129 x 96 x 76mm (5.1" x 3.8" x 3.0") 120 x 67 x 50mm (4.7" x 2.6" x 2.0")
DXO scores
DXO All around rating not tested 83
DXO Color Depth rating not tested 24.0
DXO Dynamic range rating not tested 13.6
DXO Low light rating not tested 1431
Other
Battery life 690 images 410 images
Battery format Battery Pack Battery Pack
Battery ID NP-FZ100 NP-FW50
Self timer Yes (2, 5, 10 secs + continuous, 3 or 5 frames) Yes
Time lapse feature
Type of storage Dual SD/SDHC/SDXC slots (UHS-II compatible) SD/SDHC/SDXC/Memory Stick DUO (UHS-I compliant)
Storage slots Dual One
Launch pricing $4,498 $898