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Olympus E-M10 II vs Sony A7R IV

Portability
82
Imaging
54
Features
77
Overall
63
Olympus OM-D E-M10 II front
 
Sony Alpha A7R IV front
Portability
62
Imaging
81
Features
93
Overall
85

Olympus E-M10 II vs Sony A7R IV Key Specs

Olympus E-M10 II
(Full Review)
  • 16MP - Four Thirds Sensor
  • 3" Tilting Display
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • 1920 x 1080 video
  • Micro Four Thirds Mount
  • 390g - 120 x 83 x 47mm
  • Announced August 2015
  • Earlier Model is Olympus E-M10
  • Refreshed by Olympus E-M10 III
Sony A7R IV
(Full Review)
  • 61MP - Full frame Sensor
  • 3" Tilting Screen
  • ISO 100 - 32000 (Bump 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
  • Succeeded the Sony A7R III
  • Replacement is Sony A7R V
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Olympus E-M10 II vs Sony A7R IV Overview

Let's take a more detailed look at the Olympus E-M10 II and Sony A7R IV, former is a Entry-Level Mirrorless while the latter is a Pro Mirrorless by rivals Olympus and Sony. There is a considerable difference between the resolutions of the E-M10 II (16MP) and A7R IV (61MP) and the E-M10 II (Four Thirds) and A7R IV (Full frame) come with totally different sensor dimensions.

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The E-M10 II was announced 4 years before the A7R IV which is quite a large difference as far as tech is concerned. Each of these cameras offer the identical body type (SLR-style mirrorless).

Before we go straight into a comprehensive comparison, below is a brief view of how the E-M10 II matches up versus the A7R IV with respect to portability, imaging, features and an overall mark.

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

 E-M10 II A7R IV 

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

 A7R IV E-M10 II 
RevealedJuly 2019August 2015Newer by 47 months
Screen resolution1440k1040kSharper screen (+400k dot)

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

 E-M10 II A7R IV 
Manual focus Dial accurate focus
Screen typeTiltingTiltingTilting screen
Screen sizing3"3"Equivalent screen sizing
Selfie screen Neither comes with selfie screen
Touch friendly screen Quickly navigate

Olympus E-M10 II vs Sony A7R IV Physical Comparison

When you are intending to travel with your camera frequently, you'll have to take into account its weight and volume. The Olympus E-M10 II comes with physical dimensions of 120mm x 83mm x 47mm (4.7" x 3.3" x 1.9") having a weight of 390 grams (0.86 lbs) while the Sony A7R IV has sizing of 129mm x 96mm x 78mm (5.1" x 3.8" x 3.1") and a weight of 665 grams (1.47 lbs).

Examine the Olympus E-M10 II and Sony A7R IV in our newest Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Don't forget, the weight of an ILC will vary depending on the lens you have chosen during that time. Here is the front view overall size comparison of the E-M10 II and the A7R IV.

Olympus E-M10 II vs Sony A7R IV size comparison

Taking into account size and weight, the portability score of the E-M10 II and A7R IV is 82 and 62 respectively.

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

Olympus E-M10 II vs Sony A7R IV Sensor Comparison

Generally, it is very tough to visualise the contrast between sensor dimensions merely by reading through specs. The picture below should offer you a more clear sense of the sensor sizes in the E-M10 II and A7R IV.

All in all, both the cameras enjoy different megapixel count and different sensor dimensions. The E-M10 II with its tinier sensor will make getting shallower depth of field more difficult and the Sony A7R IV will give greater detail with its extra 45MP. Higher resolution will also make it easier to crop photographs far more aggressively. The more aged E-M10 II is going to be behind when it comes to sensor innovation.

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

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

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

Portrait Comparison

Olympus E-M10 II Portrait photography info
Sony A7R IV Portrait photography info
72
manual focus
MP count decent (16 megapixels)
sensor size is nice (Four Thirds)
offers face detection focusing
saves RAW files
88
manual focus
MP count excellent (61 megapixels)
large sensor size (Full frame)
features face detect autofocus
supports RAW formats
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Street Comparison

Olympus E-M10 II as a Street photography camera
Sony A7R IV as a Street photography camera
83
screen tilts
built in image stabilization (Sensor based 5-axis)
sensor size is nice (Four Thirds)
saves RAW files
offers focus via touch
great high ISO (25,600)
79
screen tilts
has image stabilization (Sensor based 5-axis)
large sensor size (Full frame)
supports RAW formats
provides focus via touch
weather proof
great high ISO (32,000)
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Sports Comparison

Sports photography with Olympus E-M10 II
Sports photography with Sony A7R IV
67
built in image stabilization (Sensor based 5-axis)
MP count decent (16 megapixels)
sensor size is nice (Four Thirds)
offers tracking autofocus
lack of phase detect AF
90
maximum shutter speed is high (1/8,000 seconds)
has image stabilization (Sensor based 5-axis)
MP count excellent (61MP)
large sensor size (Full frame)
features tracking focus
weather proof
better than average battery pack (670 shots)
comes with phase detect autofocus
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Travel Comparison

Olympus E-M10 II Travel photography details
Sony A7R IV Travel photography details
73
offers focus via touch
MP count decent (16 megapixels)
has built in flash
screen isn't selfie friendly
74
better than average battery pack (670 per charge)
weather proof
connects via bluetooth
provides focus via touch
MP count excellent (61MP)
display is not selfie friendly
Photography Glossary

Landscape Comparison

Olympus E-M10 II Landscape photography info
Sony A7R IV Landscape photography info
79
manual focus
swap lenses (Micro Four Thirds mount)
decent sized screen (3 inch)
built in image stabilization (Sensor based 5-axis)
MP count decent (16 megapixels)
sensor size is nice (Four Thirds)
great high ISO (25,600)
saves RAW files
88
manual focus
interchangeable lenses (Sony E mount)
pretty good screen size (3")
has image stabilization (Sensor based 5-axis)
MP count excellent (61MP)
large sensor size (Full frame)
doesnt have anti aliasing filter
great high ISO (32,000)
supports RAW formats
weather proof
better than average battery pack (670 shots)
2 card slots
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Vlogging Comparison

Vlogging with Olympus E-M10 II
Vlogging with Sony A7R IV
35
has touchscreen
built in image stabilization (Sensor based 5-axis)
offers face detection focusing
video res high (1920 x 1080 pxls)
screen isn't selfie friendly
does not have external mic support
37
touchscreen functionality
has image stabilization (Sensor based 5-axis)
features face detect autofocus
good video quality (3840 x 2160 resolution)
does have microphone support
display is not selfie friendly
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Olympus E-M10 II vs Sony A7R IV Specifications

Detailed spec comparison table for Olympus E-M10 II and Sony A7R IV
 Olympus OM-D E-M10 IISony Alpha A7R IV
General Information
Make Olympus Sony
Model type Olympus OM-D E-M10 II Sony Alpha A7R IV
Class Entry-Level Mirrorless Pro Mirrorless
Announced 2015-08-25 2019-07-16
Physical type SLR-style mirrorless SLR-style mirrorless
Sensor Information
Processor TruePic VII Bionz X
Sensor type CMOS BSI-CMOS
Sensor size Four Thirds Full frame
Sensor measurements 17.3 x 13mm 35.8 x 23.8mm
Sensor area 224.9mm² 852.0mm²
Sensor resolution 16 megapixel 61 megapixel
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 1:1, 4:3, 3:2 and 16:9
Highest Possible resolution 4608 x 3456 9504 x 6336
Maximum native ISO 25600 32000
Maximum enhanced ISO - 102800
Min native ISO 200 100
RAW files
Min enhanced ISO 100 50
Autofocusing
Focus manually
AF touch
AF continuous
Single AF
Tracking AF
Selective AF
AF center weighted
Multi area AF
AF live view
Face detect AF
Contract detect AF
Phase detect AF
Total focus points 81 567
Lens
Lens mount type Micro Four Thirds Sony E
Available lenses 107 121
Crop factor 2.1 1
Screen
Display type Tilting Tilting
Display size 3" 3"
Resolution of display 1,040 thousand dots 1,440 thousand dots
Selfie friendly
Liveview
Touch capability
Viewfinder Information
Viewfinder type Electronic Electronic
Viewfinder resolution 2,360 thousand dots 5,760 thousand dots
Viewfinder coverage 100% 100%
Viewfinder magnification 0.62x 0.78x
Features
Min shutter speed 60s 30s
Max shutter speed 1/4000s 1/8000s
Continuous shutter rate 8.0 frames/s 10.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change WB
Image stabilization
Inbuilt flash
Flash distance 5.80 m (ISO 100) no built-in flash
Flash options Auto, redeye reduction, fill flash, flash off, 1st-curtain slow sync w/redeye, 1st-curtain slow sync, 2nd-curtain slow sync, manual Flash off, Autoflash, Fill-flash, Slow Sync., Rear Sync., Red-eye reduction, Wireless, Hi-speed sync.
Hot shoe
AEB
WB bracketing
Max flash synchronize - 1/250s
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 1920 x 1080 (60p/30p/24p), 1280 x 720 (60p/30p/24p), 640 x 480 (30 fps) 3840 x 2160 @ 30p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM
Maximum video resolution 1920x1080 3840x2160
Video file format H.264, Motion JPEG MPEG-4, XAVC S, H.264
Microphone support
Headphone support
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 390 gr (0.86 lb) 665 gr (1.47 lb)
Dimensions 120 x 83 x 47mm (4.7" x 3.3" x 1.9") 129 x 96 x 78mm (5.1" x 3.8" x 3.1")
DXO scores
DXO Overall rating 73 99
DXO Color Depth rating 23.1 26.0
DXO Dynamic range rating 12.5 14.8
DXO Low light rating 842 3344
Other
Battery life 320 photographs 670 photographs
Style of battery Battery Pack Battery Pack
Battery ID BLS-50 NP-FZ100
Self timer Yes (12 sec., 2 sec, custom) Yes
Time lapse feature
Type of storage SD/SDHC/SDXC Dual SD/SDHC/SDXC (UHS-II compatible)
Card slots One 2
Cost at release $499 $3,498