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Olympus E-M10 III vs Sony A7 III

Portability
80
Imaging
55
Features
75
Overall
63
Olympus OM-D E-M10 Mark III front
 
Sony Alpha A7 III front
Portability
63
Imaging
74
Features
92
Overall
81

Olympus E-M10 III vs Sony A7 III 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
  • Released August 2017
  • Older Model is Olympus E-M10 II
  • Later Model is Olympus E-M10 IV
Sony A7 III
(Full Review)
  • 24MP - Full frame Sensor
  • 3" Tilting Display
  • ISO 100 - 51200 (Bump to 204800)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Maximum Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 650g - 127 x 96 x 74mm
  • Introduced February 2018
  • Previous Model is Sony A7 II
  • Replacement is Sony A7 IV
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Olympus E-M10 III vs Sony A7 III Overview

Its time to take a more detailed look at the Olympus E-M10 III vs Sony A7 III, former is a Entry-Level Mirrorless while the other is a Pro Mirrorless by rivals Olympus and Sony. There exists a considerable gap among the resolutions of the E-M10 III (16MP) and A7 III (24MP) and the E-M10 III (Four Thirds) and A7 III (Full frame) use totally different sensor measurements.

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The E-M10 III was introduced 6 months earlier than the A7 III which means that they are of a similar age. The two cameras come with the identical body type (SLR-style mirrorless).

Before delving in to a more detailed comparison, below is a brief summary of how the E-M10 III matches up versus the A7 III when considering portability, imaging, features and an overall mark.

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Reasons to pick Olympus E-M10 III over the Sony A7 III

 E-M10 III A7 III 
Display resolution1040k922kClearer display (+118k dot)

Reasons to pick Sony A7 III over the Olympus E-M10 III

 A7 III E-M10 III 

Common features in the Olympus E-M10 III and Sony A7 III

 E-M10 III A7 III 
IntroducedAugust 2017February 2018Same age
Manually focus More exact focus
Display typeTiltingTiltingTilting display
Display dimension3"3"Identical display measurements
Selfie screen Lacking selfie screen
Touch friendly display Easily navigate

Olympus E-M10 III vs Sony A7 III Physical Comparison

In case you're intending to travel with your camera regularly, you're going to have to think about its weight and size. The Olympus E-M10 III features outside dimensions of 122mm x 84mm x 50mm (4.8" x 3.3" x 2.0") and a weight of 410 grams (0.90 lbs) whilst the Sony A7 III has specifications of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 650 grams (1.43 lbs).

See the Olympus E-M10 III vs Sony A7 III in our brand new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an ILC will differ based on the lens you select at the time. Below is the front view over all size comparison of the E-M10 III compared to the A7 III.

Olympus E-M10 III vs Sony A7 III size comparison

Taking into account dimensions and weight, the portability score of the E-M10 III and A7 III is 80 and 63 respectively.

Olympus E-M10 III vs Sony A7 III top view buttons comparison

Olympus E-M10 III vs Sony A7 III Sensor Comparison

Sometimes, it can be tough to visualise the contrast in sensor dimensions purely by seeing a spec sheet. The pic below may give you a greater sense of the sensor sizes in the E-M10 III and A7 III.

Clearly, both of those cameras have got different megapixel count and different sensor dimensions. The E-M10 III with its smaller sensor will make shooting shallower depth of field more challenging and the Sony A7 III will produce extra detail using its extra 8 Megapixels. Greater resolution can also help you crop photos much more aggressively.

Olympus E-M10 III vs Sony A7 III sensor size comparison

Olympus E-M10 III vs Sony A7 III Screen and ViewFinder

Olympus E-M10 III vs Sony A7 III Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with Olympus E-M10 III
Portrait photography with Sony A7 III
73
focusing manually
good megapixels (16 megapixels)
nice sensor size (Four Thirds)
supports face detection focusing
delivers RAW files
84
manual focus
good MP (24 megapixels)
big sensor size (Full frame)
features face detection focus
exports RAW formats
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Street Comparison

Olympus E-M10 III Street photography factors
Sony A7 III Street photography factors
77
screen tilts up and down
has image stabilization (Sensor based 5-axis)
nice sensor size (Four Thirds)
delivers RAW files
comes with touch to focus
great ISO range (25,600)
more heavy than competition (410g)
78
has a tilting screen
built in image stabilization (Sensor based 5-axis)
big sensor size (Full frame)
exports RAW formats
features touch focus
environment proofing
great high ISO (51,200)
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Sports Comparison

Olympus E-M10 III Sports photography features
Sony A7 III Sports photography features
69
quiet shooting (1/16,000s)
has image stabilization (Sensor based 5-axis)
good megapixels (16MP)
nice sensor size (Four Thirds)
supports tracking autofocus
lack of phase detect AF
87
maximum shutter speed is high (1/8,000 seconds)
built in image stabilization (Sensor based 5-axis)
good MP (24 megapixels)
big sensor size (Full frame)
features tracking autofocus
environment proofing
good battery power (610 CIPA)
supports phase detect auto focus
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Travel Comparison

Olympus E-M10 III Travel photography factors
Sony A7 III Travel photography factors
67
comes with touch to focus
good megapixels (16MP)
flash built-in
more heavy than competition (410 grams)
display isn't selfie friendly
73
good battery power (610 shots)
environment proofing
connects via bluetooth
features touch focus
good MP (24MP)
display is not selfie friendly
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Landscape Comparison

Olympus E-M10 III Landscape photography factors
Sony A7 III Landscape photography factors
80
focusing manually
switch lenses (Micro Four Thirds mount)
pretty good screen size (3 inches)
has image stabilization (Sensor based 5-axis)
good megapixels (16 megapixels)
nice sensor size (Four Thirds)
great ISO range (25,600)
delivers RAW files
85
manual focus
interchangeable lenses (Sony E mount)
nice screen size (3")
built in image stabilization (Sensor based 5-axis)
good MP (24 megapixels)
big sensor size (Full frame)
great high ISO (51,200)
exports RAW formats
environment proofing
good battery power (610 CIPA)
2 card slots
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Vlogging Comparison

Vlogging with Olympus E-M10 III
Vlogging with Sony A7 III
32
built-in touchscreen
has image stabilization (Sensor based 5-axis)
supports face detection focusing
high quality video (3840 x 2160 pixels)
display isn't selfie friendly
doesn't have external microphone support
more heavy than competition (410 grams)
36
touchscreen capability
built in image stabilization (Sensor based 5-axis)
features face detection focus
video resolution high (3840 x 2160 pixels)
comes with external microphone support
display is not selfie friendly
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Olympus E-M10 III vs Sony A7 III Specifications

Detailed spec comparison table for Olympus E-M10 III and Sony A7 III
 Olympus OM-D E-M10 Mark IIISony Alpha A7 III
General Information
Manufacturer Olympus Sony
Model type Olympus OM-D E-M10 Mark III Sony Alpha A7 III
Category Entry-Level Mirrorless Pro Mirrorless
Released 2017-08-31 2018-02-27
Physical type SLR-style mirrorless SLR-style mirrorless
Sensor Information
Chip TruePic VIII Bionz X
Sensor type CMOS BSI-CMOS
Sensor size Four Thirds Full frame
Sensor measurements 17.4 x 13mm 35.8 x 23.8mm
Sensor surface area 226.2mm² 852.0mm²
Sensor resolution 16MP 24MP
Anti alias filter
Aspect ratio 4:3 3:2 and 16:9
Highest resolution 4608 x 3456 6000 x 4000
Highest native ISO 25600 51200
Highest boosted ISO - 204800
Minimum native ISO 200 100
RAW pictures
Minimum boosted ISO 100 50
Autofocusing
Focus manually
AF touch
AF continuous
AF single
AF tracking
AF selectice
AF center weighted
Multi area AF
Live view AF
Face detect focusing
Contract detect focusing
Phase detect focusing
Total focus points 121 693
Lens
Lens support Micro Four Thirds Sony E
Amount of lenses 107 121
Focal length multiplier 2.1 1
Screen
Display type Tilting Tilting
Display sizing 3 inch 3 inch
Resolution of display 1,040 thousand dots 922 thousand dots
Selfie friendly
Liveview
Touch display
Viewfinder Information
Viewfinder Electronic Electronic
Viewfinder resolution 2,360 thousand dots 2,359 thousand dots
Viewfinder coverage 100% 100%
Viewfinder magnification 0.62x 0.78x
Features
Lowest shutter speed 60 seconds 30 seconds
Highest shutter speed 1/4000 seconds 1/8000 seconds
Highest quiet shutter speed 1/16000 seconds -
Continuous shooting rate 8.6 frames per sec 10.0 frames per sec
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Set WB
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 no built-in flash
Hot shoe
AE bracketing
WB bracketing
Highest flash synchronize 1/250 seconds -
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM 3840 x 2160 (30p, 24p) 1920 x 1080 (120p, 60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p)
Highest video resolution 3840x2160 3840x2160
Video file format MPEG-4, H.264 MPEG-4, AVCHD, 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
Environmental sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 410 gr (0.90 lb) 650 gr (1.43 lb)
Dimensions 122 x 84 x 50mm (4.8" x 3.3" x 2.0") 127 x 96 x 74mm (5.0" x 3.8" x 2.9")
DXO scores
DXO All around rating not tested 96
DXO Color Depth rating not tested 25.0
DXO Dynamic range rating not tested 14.7
DXO Low light rating not tested 3730
Other
Battery life 330 images 610 images
Style of battery Battery Pack Battery Pack
Battery ID BLS-50 NP-FZ100
Self timer Yes (2 or 12 secs, custom) Yes (2 or 10 sec; continuous (3 or 5 exposures))
Time lapse recording
Type of storage SD/SDHC/SDXC (UHS-I/II supported) SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
Card slots Single 2
Retail cost $650 $1,998