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Olympus E-M10 III vs Sony A7R IV

Portability
80
Imaging
55
Features
75
Overall
63
Olympus OM-D E-M10 Mark III front
 
Sony Alpha A7R IV front
Portability
62
Imaging
81
Features
93
Overall
85

Olympus E-M10 III vs Sony A7R IV Key Specs

Olympus E-M10 III
(Full Review)
  • 16MP - Four Thirds Sensor
  • 3" Tilting Display
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • 3840 x 2160 video
  • Micro Four Thirds Mount
  • 410g - 122 x 84 x 50mm
  • Revealed August 2017
  • Superseded the Olympus E-M10 II
  • Later Model is Olympus E-M10 IV
Sony A7R IV
(Full Review)
  • 61MP - Full frame Sensor
  • 3" Tilting Screen
  • ISO 100 - 32000 (Raise to 102800)
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 665g - 129 x 96 x 78mm
  • Revealed July 2019
  • Superseded the Sony A7R III
  • Replacement is Sony A7R V
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Olympus E-M10 III vs Sony A7R IV Overview

Lets examine more in depth at the Olympus E-M10 III vs Sony A7R IV, former is a Entry-Level Mirrorless while the latter is a Pro Mirrorless by companies Olympus and Sony. There is a noticeable difference among the sensor resolutions of the E-M10 III (16MP) and A7R IV (61MP) and the E-M10 III (Four Thirds) and A7R IV (Full frame) use totally different sensor sizes.

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The E-M10 III was unveiled 22 months before the A7R IV which makes the cameras a generation away from each other. Both of the cameras offer the identical body type (SLR-style mirrorless).

Before diving through a in-depth comparison, below is a simple synopsis of how the E-M10 III grades versus the A7R IV in regards to portability, imaging, features and an overall score.

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Reasons to pick Olympus E-M10 III over the Sony A7R IV

 E-M10 III A7R IV 

Reasons to pick Sony A7R IV over the Olympus E-M10 III

 A7R IV E-M10 III 
RevealedJuly 2019August 2017More modern by 22 months
Screen resolution1440k1040kCrisper screen (+400k dot)

Common features in the Olympus E-M10 III and Sony A7R IV

 E-M10 III A7R IV 
Focus manually Very exact focus
Screen typeTiltingTiltingTilting screen
Screen sizing3"3"Equivalent screen dimensions
Selfie screen Missing selfie screen
Touch friendly screen Quickly navigate

Olympus E-M10 III vs Sony A7R IV Physical Comparison

When you are planning to carry around your camera frequently, you'll have to think about its weight and dimensions. The Olympus E-M10 III has got outside dimensions of 122mm x 84mm x 50mm (4.8" x 3.3" x 2.0") with a weight of 410 grams (0.90 lbs) and the Sony A7R IV has dimensions of 129mm x 96mm x 78mm (5.1" x 3.8" x 3.1") along with a weight of 665 grams (1.47 lbs).

Examine the Olympus E-M10 III vs Sony A7R IV in our brand new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an ILC will change dependant on the lens you have chosen during that time. Below is the front view measurement comparison of the E-M10 III vs the A7R IV.

Olympus E-M10 III vs Sony A7R IV size comparison

Looking at size and weight, the portability rating of the E-M10 III and A7R IV is 80 and 62 respectively.

Olympus E-M10 III vs Sony A7R IV top view buttons comparison

Olympus E-M10 III vs Sony A7R IV Sensor Comparison

Oftentimes, it can be hard to visualise the difference in sensor sizes merely by looking through a spec sheet. The picture underneath might give you a greater sense of the sensor dimensions in the E-M10 III and A7R IV.

As you can see, both the cameras offer different megapixels and different sensor sizes. The E-M10 III using its smaller sensor will make getting shallow DOF trickier and the Sony A7R IV will result in more detail having an extra 45 Megapixels. Higher resolution will also help you crop photographs a little more aggressively. The more aged E-M10 III will be behind in sensor tech.

Olympus E-M10 III vs Sony A7R IV sensor size comparison

Olympus E-M10 III vs Sony A7R IV Screen and ViewFinder

Olympus E-M10 III vs Sony A7R IV Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus E-M10 III Portrait photography advice
Sony A7R IV Portrait photography advice
73
has manual focus
good MP (16 megapixels)
decent sensor size (Four Thirds)
offers face detect autofocus
delivers RAW formats
88
has manual focus
excellent megapixels (61 megapixels)
sensor size is large (Full frame)
has face detect focus
supports RAW formats
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Street Comparison

Street photography with Olympus E-M10 III
Street photography with Sony A7R IV
77
screen tilts
image stabilization (Sensor based 5-axis)
decent sensor size (Four Thirds)
delivers RAW formats
features focus via touch
good ISO range (25,600)
more heavy than competition in class (410g)
79
screen tilts up and down
built in image stabilization (Sensor based 5-axis)
sensor size is large (Full frame)
supports RAW formats
offers touch to focus
weather proofing
above average high ISO (32,000)
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Sports Comparison

Olympus E-M10 III Sports photography factors
Sony A7R IV Sports photography factors
69
quiet shooting (1/16,000s)
image stabilization (Sensor based 5-axis)
good MP (16 megapixels)
decent sensor size (Four Thirds)
offers tracking focus
has no phase detect autofocus
90
maximum shutter speed is high (1/8,000s)
built in image stabilization (Sensor based 5-axis)
excellent megapixels (61 megapixels)
sensor size is large (Full frame)
has tracking focus
weather proofing
good battery pack (670 shots)
sensor has phase detect auto focus
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Travel Comparison

Olympus E-M10 III Travel photography details
Sony A7R IV Travel photography details
67
features focus via touch
good MP (16MP)
flash built-in
more heavy than competition in class (410 grams)
display is not selfie friendly
74
good battery pack (670 CIPA)
weather proofing
connects via bluetooth
offers touch to focus
excellent megapixels (61 megapixels)
display is not selfie friendly
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Landscape Comparison

Olympus E-M10 III Landscape photography info
Sony A7R IV Landscape photography info
80
has manual focus
interchangeable lenses (Micro Four Thirds mount)
screen size is good (3 inches)
image stabilization (Sensor based 5-axis)
good MP (16MP)
decent sensor size (Four Thirds)
good ISO range (25,600)
delivers RAW formats
88
has manual focus
interchangeable lenses (Sony E mount)
good sized screen (3 inches)
built in image stabilization (Sensor based 5-axis)
excellent megapixels (61MP)
sensor size is large (Full frame)
no anti-alias filter
above average high ISO (32,000)
supports RAW formats
weather proofing
good battery pack (670 shots)
two card slots
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Vlogging Comparison

Vlogging with Olympus E-M10 III
Vlogging with Sony A7R IV
32
screen is touchscreen
image stabilization (Sensor based 5-axis)
offers face detect autofocus
high quality video (3840 x 2160 resolution)
display is not selfie friendly
does not have microphone jack
more heavy than competition in class (410 grams)
37
touchscreen enabled
built in image stabilization (Sensor based 5-axis)
has face detect focus
video resolution high (3840 x 2160 pxls)
includes mic socket
display is not selfie friendly
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Olympus E-M10 III vs Sony A7R IV Specifications

Detailed spec comparison table for Olympus E-M10 III and Sony A7R IV
 Olympus OM-D E-M10 Mark IIISony Alpha A7R IV
General Information
Brand Name Olympus Sony
Model type Olympus OM-D E-M10 Mark III Sony Alpha A7R IV
Category Entry-Level Mirrorless Pro Mirrorless
Revealed 2017-08-31 2019-07-16
Physical type SLR-style mirrorless SLR-style mirrorless
Sensor Information
Processor Chip TruePic VIII Bionz X
Sensor type CMOS BSI-CMOS
Sensor size Four Thirds Full frame
Sensor dimensions 17.4 x 13mm 35.8 x 23.8mm
Sensor surface area 226.2mm² 852.0mm²
Sensor resolution 16 megapixels 61 megapixels
Anti alias filter
Aspect ratio 4:3 1:1, 4:3, 3:2 and 16:9
Max resolution 4608 x 3456 9504 x 6336
Max native ISO 25600 32000
Max enhanced ISO - 102800
Minimum native ISO 200 100
RAW files
Minimum enhanced ISO 100 50
Autofocusing
Focus manually
Touch focus
Continuous autofocus
Autofocus single
Autofocus tracking
Selective autofocus
Autofocus center weighted
Autofocus multi area
Autofocus live view
Face detect autofocus
Contract detect autofocus
Phase detect autofocus
Total focus points 121 567
Lens
Lens support Micro Four Thirds Sony E
Total lenses 107 121
Crop factor 2.1 1
Screen
Display type Tilting Tilting
Display sizing 3" 3"
Resolution of display 1,040k dots 1,440k dots
Selfie friendly
Liveview
Touch function
Viewfinder Information
Viewfinder Electronic Electronic
Viewfinder resolution 2,360k dots 5,760k dots
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.62x 0.78x
Features
Min shutter speed 60 secs 30 secs
Max shutter speed 1/4000 secs 1/8000 secs
Max quiet shutter speed 1/16000 secs -
Continuous shutter rate 8.6 frames per sec 10.0 frames per sec
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Set white balance
Image stabilization
Built-in flash
Flash distance 5.80 m (at ISO 100) no built-in flash
Flash options Auto, redeye, slow sync, 2nd-curtain slow sync, redeye slow sync, fill-in, manual, off Flash off, Autoflash, Fill-flash, Slow Sync., Rear Sync., Red-eye reduction, Wireless, Hi-speed sync.
External flash
AE bracketing
WB bracketing
Max flash synchronize 1/250 secs 1/250 secs
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions 3840 x 2160 @ 30p / 102 Mbps, MOV, 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, H.264 MPEG-4, XAVC S, H.264
Mic port
Headphone port
Connectivity
Wireless Built-In Built-In
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 3.1 Gen 1(5 GBit/sec)
GPS None None
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 410 grams (0.90 lb) 665 grams (1.47 lb)
Dimensions 122 x 84 x 50mm (4.8" x 3.3" x 2.0") 129 x 96 x 78mm (5.1" x 3.8" x 3.1")
DXO scores
DXO Overall rating not tested 99
DXO Color Depth rating not tested 26.0
DXO Dynamic range rating not tested 14.8
DXO Low light rating not tested 3344
Other
Battery life 330 images 670 images
Battery type Battery Pack Battery Pack
Battery ID BLS-50 NP-FZ100
Self timer Yes (2 or 12 secs, custom) Yes
Time lapse feature
Type of storage SD/SDHC/SDXC (UHS-I/II supported) Dual SD/SDHC/SDXC (UHS-II compatible)
Card slots 1 2
Pricing at release $650 $3,498