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Olympus E-M1 III vs Sony A7R III

Portability
67
Imaging
62
Features
96
Overall
75
Olympus OM-D E-M1 Mark III front
 
Sony Alpha A7R III front
Portability
63
Imaging
78
Features
93
Overall
84

Olympus E-M1 III vs Sony A7R III Key Specs

Olympus E-M1 III
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Fully Articulated Display
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Max Shutter
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 580g - 134 x 91 x 69mm
  • Released February 2020
  • Older Model is Olympus E-M1 II
Sony A7R III
(Full Review)
  • 42MP - Full frame Sensor
  • 3" Tilting Screen
  • ISO 100 - 32000 (Increase to 102400)
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 657g - 127 x 96 x 74mm
  • Announced October 2017
  • Older Model is Sony A7R II
  • Updated by Sony A7R IV
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Olympus E-M1 III vs Sony A7R III Overview

Here is a extended comparison of the Olympus E-M1 III and Sony A7R III, both Pro Mirrorless cameras by competitors Olympus and Sony. There is a crucial difference among the sensor resolutions of the E-M1 III (20MP) and A7R III (42MP) and the E-M1 III (Four Thirds) and A7R III (Full frame) offer totally different sensor sizes.

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The E-M1 III was unveiled 2 years later than the A7R III and that is a fairly serious gap as far as camera tech is concerned. Each of these cameras have the same body design (SLR-style mirrorless).

Before diving straight to a detailed comparison, here is a simple highlight of how the E-M1 III matches up vs the A7R III in terms of portability, imaging, features and an overall rating.

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Reasons to pick Olympus E-M1 III over the Sony A7R III

 E-M1 III A7R III 
AnnouncedFebruary 2020October 2017Fresher by 28 months
Screen typeFully ArticulatedTiltingFully Articulating screen
Selfie screen Take selfies

Reasons to pick Sony A7R III over the Olympus E-M1 III

 A7R III E-M1 III 
Screen resolution1440k1037kCrisper screen (+403k dot)

Common features in the Olympus E-M1 III and Sony A7R III

 E-M1 III A7R III 
Manually focus More precise focus
Screen dimensions3"3"Equal screen dimensions
Touch screen Quickly navigate

Olympus E-M1 III vs Sony A7R III Physical Comparison

If you're looking to carry your camera regularly, you will have to take into account its weight and measurements. The Olympus E-M1 III features outer dimensions of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") along with a weight of 580 grams (1.28 lbs) whilst the Sony A7R III has proportions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") along with a weight of 657 grams (1.45 lbs).

Contrast the Olympus E-M1 III and Sony A7R III in the all new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are utilising during that time. Below is a front view sizing comparison of the E-M1 III compared to the A7R III.

Olympus E-M1 III vs Sony A7R III size comparison

Factoring in size and weight, the portability rating of the E-M1 III and A7R III is 67 and 63 respectively.

Olympus E-M1 III vs Sony A7R III top view buttons comparison

Olympus E-M1 III vs Sony A7R III Sensor Comparison

Usually, it's tough to envision the contrast in sensor sizing merely by looking through technical specs. The photograph underneath will provide you a far better sense of the sensor sizes in the E-M1 III and A7R III.

As you can tell, both of the cameras have different megapixel count and different sensor sizing. The E-M1 III having a smaller sensor will make achieving bokeh trickier and the Sony A7R III will render greater detail having an extra 22MP. Higher resolution can also enable you to crop pictures a bit more aggressively. The newer E-M1 III will have a benefit with regard to sensor innovation.

Olympus E-M1 III vs Sony A7R III sensor size comparison

Olympus E-M1 III vs Sony A7R III Screen and ViewFinder

Olympus E-M1 III vs Sony A7R III Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Olympus E-M1 III Portrait photography info
Sony A7R III Portrait photography info
77
manual focus
megapixel count good (20 megapixels)
sensor size is nice (Four Thirds)
offers face detect focusing
supports RAW files
86
focusing manually
megapixel count fantastic (42MP)
large sensor size (Full frame)
features face detect focusing
saves RAW formats
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Street Comparison

Olympus E-M1 III as a Street photography camera
Sony A7R III as a Street photography camera
78
screen articulates
image stabilization (Sensor based 5-axis)
sensor size is nice (Four Thirds)
supports RAW files
has focus by touch
weather sealing
very good ISO range (25,600)
79
screen tilts
built in image stabilization (Sensor based 5-axis)
large sensor size (Full frame)
saves RAW formats
offers focus via touch
environment proof
good high ISO (32,000)
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Sports Comparison

Olympus E-M1 III Sports photography features
Sony A7R III Sports photography features
81
maximum shutter speed is high (1/8,000 seconds)
quiet shooting (1/32,000 seconds)
high fps (60.0 frames per second)
image stabilization (Sensor based 5-axis)
megapixel count good (20MP)
sensor size is nice (Four Thirds)
offers tracking focus
weather sealing
has phase detect AF
89
great max shutter speed (1/8,000 seconds)
built in image stabilization (Sensor based 5-axis)
megapixel count fantastic (42 megapixels)
large sensor size (Full frame)
features tracking focus
environment proof
good battery (650 per charge)
sensor has phase detect AF
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Travel Comparison

Olympus E-M1 III Travel photography highlights
Sony A7R III Travel photography highlights
79
weather sealing
has bluetooth
has focus by touch
megapixel count good (20 megapixels)
display is selfie friendly
74
good battery (650 per charge)
environment proof
connects via bluetooth
offers focus via touch
megapixel count fantastic (42 megapixels)
display is not selfie friendly
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Landscape Comparison

Olympus E-M1 III Landscape photography information
Sony A7R III Landscape photography information
81
manual focus
switch lenses (Micro Four Thirds mount)
good sized screen (3 inches)
image stabilization (Sensor based 5-axis)
megapixel count good (20MP)
sensor size is nice (Four Thirds)
no low pass filter
very good ISO range (25,600)
supports RAW files
weather sealing
has double storage slots
87
focusing manually
switch lenses (Sony E mount)
screen size is good (3")
built in image stabilization (Sensor based 5-axis)
megapixel count fantastic (42 megapixels)
large sensor size (Full frame)
no low pass filter
good high ISO (32,000)
saves RAW formats
environment proof
good battery (650 per charge)
has dual storage slots
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Vlogging Comparison

Olympus E-M1 III Vlogging highlights
Sony A7R III Vlogging highlights
79
display is selfie friendly
touchscreen functionality
image stabilization (Sensor based 5-axis)
offers face detect focusing
video resolution high (4096 x 2160 pixels)
has microphone port
37
has touchscreen
built in image stabilization (Sensor based 5-axis)
features face detect focusing
video resolution high (3840 x 2160 pxls)
includes mic jack
display is not selfie friendly
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Olympus E-M1 III vs Sony A7R III Specifications

Detailed spec comparison table for Olympus E-M1 III and Sony A7R III
 Olympus OM-D E-M1 Mark IIISony Alpha A7R III
General Information
Company Olympus Sony
Model type Olympus OM-D E-M1 Mark III Sony Alpha A7R III
Class Pro Mirrorless Pro Mirrorless
Released 2020-02-11 2017-10-25
Body design SLR-style mirrorless SLR-style mirrorless
Sensor Information
Processor TruePic IX Bionz X
Sensor type CMOS BSI-CMOS
Sensor size Four Thirds Full frame
Sensor dimensions 17.4 x 13mm 35.9 x 24mm
Sensor surface area 226.2mm² 861.6mm²
Sensor resolution 20 megapixels 42 megapixels
Anti alias filter
Aspect ratio 4:3 3:2 and 16:9
Full resolution 5184 x 3888 7952 x 5304
Max native ISO 25600 32000
Max boosted ISO - 102400
Lowest native ISO 200 100
RAW support
Lowest boosted ISO 64 50
Autofocusing
Focus manually
Autofocus touch
Autofocus continuous
Single autofocus
Tracking autofocus
Autofocus selectice
Autofocus center weighted
Multi area autofocus
Live view autofocus
Face detect autofocus
Contract detect autofocus
Phase detect autofocus
Total focus points 121 425
Cross type focus points 121 -
Lens
Lens support Micro Four Thirds Sony E
Available lenses 107 121
Focal length multiplier 2.1 1
Screen
Range of display Fully Articulated Tilting
Display sizing 3 inch 3 inch
Display resolution 1,037k dot 1,440k dot
Selfie friendly
Liveview
Touch function
Viewfinder Information
Viewfinder Electronic Electronic
Viewfinder resolution 2,360k dot 3,686k dot
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.74x 0.78x
Features
Slowest shutter speed 60s 30s
Maximum shutter speed 1/8000s 1/8000s
Maximum quiet shutter speed 1/32000s -
Continuous shooting speed 60.0 frames/s 10.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Set white balance
Image stabilization
Inbuilt flash
Flash distance no built-in flash no built-in flash
Flash settings Redeye, Fill-in, Flash Off, Red-eye Slow sync.(1st curtain), Slow sync.(1st curtain), Slow sync.(2nd curtain), Manual Off, Auto, Fill-flash, Slow Sync, Rear Sync, Red-eye reduction, Wireless, Hi-speed sync
Hot shoe
AEB
White balance bracketing
Maximum flash sync 1/250s -
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
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, 25p, 24p), 1920 x 1080 (60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p)
Max video resolution 4096x2160 3840x2160
Video file format MPEG-4, H.264 MPEG-4, AVCHD, XAVC S
Mic input
Headphone input
Connectivity
Wireless Built-In Built-In
Bluetooth
NFC
HDMI
USB USB 3.1 Gen 1 (5 GBit/sec) USB 3.1 Gen 1(5 GBit/sec)
GPS None None
Physical
Environmental seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 580 gr (1.28 lb) 657 gr (1.45 lb)
Physical dimensions 134 x 91 x 69mm (5.3" x 3.6" x 2.7") 127 x 96 x 74mm (5.0" x 3.8" x 2.9")
DXO scores
DXO All around rating not tested 100
DXO Color Depth rating not tested 26.0
DXO Dynamic range rating not tested 14.7
DXO Low light rating not tested 3523
Other
Battery life 420 shots 650 shots
Type of battery Battery Pack Battery Pack
Battery ID BLH-1 NP-FZ100
Self timer Yes (2 or 12 secs, custom) Yes (2 or 10 sec; continuous (3 or 5 exposures))
Time lapse shooting
Type of storage Dual SD/SDHC/SDXC slots (UHS-II on first slot) Two SD/SDHC/SDXC slots (UHS-II support on one)
Storage slots Two Two
Pricing at launch $1,800 $2,800