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Olympus E-M1 III vs Sony A6400

Portability
67
Imaging
62
Features
96
Overall
75
Olympus OM-D E-M1 Mark III front
 
Sony Alpha a6400 front
Portability
83
Imaging
69
Features
88
Overall
76

Olympus E-M1 III vs Sony A6400 Key Specs

Olympus E-M1 III
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Fully Articulated Screen
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 580g - 134 x 91 x 69mm
  • Launched February 2020
  • Older Model is Olympus E-M1 II
Sony A6400
(Full Review)
  • 24MP - APS-C Sensor
  • 3" Tilting Screen
  • ISO 100 - 32000 (Boost to 102400)
  • 3840 x 2160 video
  • Sony E Mount
  • 403g - 120 x 67 x 50mm
  • Revealed January 2019
Photography Glossary

Olympus E-M1 III vs Sony A6400 Overview

Below is a extended overview of the Olympus E-M1 III and Sony A6400, former being a Pro Mirrorless while the latter is a Advanced Mirrorless by companies Olympus and Sony. The image resolution of the E-M1 III (20MP) and the A6400 (24MP) is pretty similar but the E-M1 III (Four Thirds) and A6400 (APS-C) enjoy totally different sensor sizing.

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The E-M1 III was launched 14 months later than the A6400 which makes the cameras a generation apart from each other. Both the cameras come with different body type with the Olympus E-M1 III being a SLR-style mirrorless camera and the Sony A6400 being a Rangefinder-style mirrorless camera.

Before going straight into a full comparison, below is a short synopsis of how the E-M1 III scores versus the A6400 with respect to portability, imaging, features and an overall grade.

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Reasons to pick Olympus E-M1 III over the Sony A6400

 E-M1 III A6400 
RevealedFebruary 2020January 2019More recent by 14 months
Screen typeFully ArticulatedTiltingFully Articulating screen
Screen resolution1037k922kClearer screen (+115k dot)

Reasons to pick Sony A6400 over the Olympus E-M1 III

 A6400 E-M1 III 

Common features in the Olympus E-M1 III and Sony A6400

 E-M1 III A6400 
Manually focus Very accurate focusing
Screen dimension3"3"Identical screen measurement
Selfie screen Both are selfie friendly
Touch screen Quickly navigate

Olympus E-M1 III vs Sony A6400 Physical Comparison

If you're intending to lug around your camera regularly, you need to factor in its weight and proportions. The Olympus E-M1 III has got exterior dimensions of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") having a weight of 580 grams (1.28 lbs) while the Sony A6400 has measurements of 120mm x 67mm x 50mm (4.7" x 2.6" x 2.0") having a weight of 403 grams (0.89 lbs).

Check out the Olympus E-M1 III and Sony A6400 in our completely new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into account, the weight of an ILC will change based on the lens you choose at that time. Underneath is the front view measurements comparison of the E-M1 III against the A6400.

Olympus E-M1 III vs Sony A6400 size comparison

Looking at size and weight, the portability rating of the E-M1 III and A6400 is 67 and 83 respectively.

Olympus E-M1 III vs Sony A6400 top view buttons comparison

Olympus E-M1 III vs Sony A6400 Sensor Comparison

Generally, its tough to see the gap between sensor measurements only by reading specifications. The photograph here may give you a stronger sense of the sensor dimensions in the E-M1 III and A6400.

Plainly, both cameras posses different megapixel count and different sensor measurements. The E-M1 III due to its tinier sensor will make getting shallower depth of field more difficult and the Sony A6400 will offer extra detail utilizing its extra 4 Megapixels. Higher resolution will allow you to crop photographs somewhat more aggressively. The more modern E-M1 III will have an edge when it comes to sensor technology.

Olympus E-M1 III vs Sony A6400 sensor size comparison

Olympus E-M1 III vs Sony A6400 Screen and ViewFinder

Olympus E-M1 III vs Sony A6400 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus E-M1 III Portrait photography details
Sony A6400 Portrait photography details
77
manual focus
decent MP (20MP)
sensor size is decent (Four Thirds)
has face detection focusing
saves RAW formats
81
has manual focus
megapixel count decent (24MP)
sensor size is good (APS-C)
provides face detect autofocus
exports RAW formats
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Street Comparison

Street photography with Olympus E-M1 III
Street photography with Sony A6400
78
screen articulates fully
built in image stabilization (Sensor based 5-axis)
sensor size is decent (Four Thirds)
saves RAW formats
supports touch to focus
environment sealing
above average ISO range (25,600)
81
screen tilts
sensor size is good (APS-C)
exports RAW formats
includes focus via touch
weather proofing
above average ISO range (32,000)
does not have image stabilization
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Sports Comparison

Olympus E-M1 III Sports photography information
Sony A6400 Sports photography information
81
high shutter speed (1/8,000s)
silent shooting (1/32,000s)
max frames per second high (60.0 frames/s)
built in image stabilization (Sensor based 5-axis)
decent MP (20MP)
sensor size is decent (Four Thirds)
has tracking autofocus
environment sealing
supports phase detect AF
76
megapixel count decent (24 megapixels)
sensor size is good (APS-C)
provides tracking focus
weather proofing
has phase detect autofocus
does not have image stabilization
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Travel Comparison

Olympus E-M1 III Travel photography highlights
Sony A6400 Travel photography highlights
79
environment sealing
has bluetooth
supports touch to focus
decent MP (20 megapixels)
display is selfie friendly
87
weather proofing
connects via bluetooth
includes focus via touch
megapixel count decent (24 megapixels)
built-in flash
display is selfie friendly
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Landscape Comparison

Olympus E-M1 III Landscape photography factors
Sony A6400 Landscape photography factors
81
manual focus
swap lenses (Micro Four Thirds mount)
screen size is decent (3")
built in image stabilization (Sensor based 5-axis)
decent MP (20MP)
sensor size is decent (Four Thirds)
does not have anti aliasing filter
above average ISO range (25,600)
saves RAW formats
environment sealing
two card slots
80
has manual focus
change lenses (Sony E mount)
nice screen size (3")
megapixel count decent (24 megapixels)
sensor size is good (APS-C)
above average ISO range (32,000)
exports RAW formats
weather proofing
does not have image stabilization
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Vlogging Comparison

Olympus E-M1 III Vlogging details
Sony A6400 Vlogging details
79
display is selfie friendly
screen is touchscreen
built in image stabilization (Sensor based 5-axis)
has face detection focusing
video res high (4096 x 2160 resolution)
comes with external mic socket
80
display is selfie friendly
touchscreen capability
provides face detect autofocus
high res video (3840 x 2160 pxls)
has mic socket
does not have image stabilization
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Olympus E-M1 III vs Sony A6400 Specifications

Detailed spec comparison table for Olympus E-M1 III and Sony A6400
 Olympus OM-D E-M1 Mark IIISony Alpha a6400
General Information
Brand Olympus Sony
Model type Olympus OM-D E-M1 Mark III Sony Alpha a6400
Class Pro Mirrorless Advanced Mirrorless
Launched 2020-02-11 2019-01-15
Physical type SLR-style mirrorless Rangefinder-style mirrorless
Sensor Information
Processor TruePic IX Bionz X
Sensor type CMOS CMOS
Sensor size Four Thirds APS-C
Sensor dimensions 17.4 x 13mm 23.5 x 15.6mm
Sensor surface area 226.2mm² 366.6mm²
Sensor resolution 20 megapixels 24 megapixels
Anti alias filter
Aspect ratio 4:3 1:1, 3:2 and 16:9
Maximum resolution 5184 x 3888 6000 x 4000
Maximum native ISO 25600 32000
Maximum boosted ISO - 102400
Minimum native ISO 200 100
RAW images
Minimum boosted ISO 64 -
Autofocusing
Focus manually
AF touch
AF continuous
Single AF
Tracking AF
AF selectice
AF center weighted
Multi area AF
Live view AF
Face detection focusing
Contract detection focusing
Phase detection focusing
Total focus points 121 425
Cross type focus points 121 -
Lens
Lens support Micro Four Thirds Sony E
Available lenses 107 121
Crop factor 2.1 1.5
Screen
Type of screen Fully Articulated Tilting
Screen size 3 inch 3 inch
Resolution of screen 1,037 thousand dots 922 thousand dots
Selfie friendly
Liveview
Touch operation
Viewfinder Information
Viewfinder type Electronic Electronic
Viewfinder resolution 2,360 thousand dots 2,359 thousand dots
Viewfinder coverage 100% 100%
Viewfinder magnification 0.74x 0.7x
Features
Lowest shutter speed 60s 30s
Highest shutter speed 1/8000s 1/4000s
Highest silent shutter speed 1/32000s -
Continuous shooting rate 60.0 frames per second 11.0 frames per second
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Change WB
Image stabilization
Inbuilt flash
Flash distance no built-in flash 6.00 m (at ISO 100)
Flash options Redeye, Fill-in, Flash Off, Red-eye Slow sync.(1st curtain), Slow sync.(1st curtain), Slow sync.(2nd curtain), Manual Off, auto, on, slow sync, rear sync, redeye reduction, wireless, hi-speed sync
Hot shoe
Auto exposure bracketing
WB bracketing
Highest flash synchronize 1/250s -
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions 4096 x 2160 @ 24p / 237 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 25p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 23.98p / 102 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 60p, MOV, H.264, Linear PCM1920 x 1080 @ 50p, MOV, H.264, Linear PCM1920 x 1080 @ 30p, MOV, H.264, Linear PCM1920 x 1080 @ 25p, MOV, H.264, Linear PCM1920 x 1080 @ 23.98p, MOV, H.264, Linear PCM 3840 x 2160 @ 30p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM
Maximum video resolution 4096x2160 3840x2160
Video file format MPEG-4, H.264 MPEG-4, H.264, XAVC-S
Mic port
Headphone port
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
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 580 grams (1.28 lb) 403 grams (0.89 lb)
Dimensions 134 x 91 x 69mm (5.3" x 3.6" x 2.7") 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 420 images 410 images
Type of battery Battery Pack Battery Pack
Battery ID BLH-1 NP-FW50
Self timer Yes (2 or 12 secs, custom) Yes
Time lapse feature
Type of storage Dual SD/SDHC/SDXC slots (UHS-II on first slot) SD/SDHC/SDXC/Memory Stick DUO (UHS-I compliant)
Card slots Dual One
Price at launch $1,800 $898