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Olympus E-M10 IV vs Sony A7 III

Portability
81
Imaging
62
Features
83
Overall
70
Olympus OM-D E-M10 IV front
 
Sony Alpha A7 III front
Portability
63
Imaging
74
Features
92
Overall
81

Olympus E-M10 IV vs Sony A7 III Key Specs

Olympus E-M10 IV
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Tilting Screen
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • 3840 x 2160 video
  • Micro Four Thirds Mount
  • 383g - 122 x 84 x 49mm
  • Revealed August 2020
  • Earlier Model is Olympus E-M10 III
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 Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 650g - 127 x 96 x 74mm
  • Launched February 2018
  • Succeeded the Sony A7 II
  • Renewed by Sony A7 IV
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Olympus E-M10 IV vs Sony A7 III Overview

Here, we are reviewing the Olympus E-M10 IV and Sony A7 III, one is a Entry-Level Mirrorless and the other is a Pro Mirrorless by rivals Olympus and Sony. The image resolution of the E-M10 IV (20MP) and the A7 III (24MP) is very similar but the E-M10 IV (Four Thirds) and A7 III (Full frame) provide totally different sensor dimensions.

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The E-M10 IV was released 2 years after the A7 III which is quite a big gap as far as technology is concerned. Each of the cameras feature the same body design (SLR-style mirrorless).

Before diving right into a step-by-step comparison, here is a quick summation of how the E-M10 IV scores versus the A7 III when it comes to portability, imaging, features and an overall score.

Photography Glossary
	
	

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

 E-M10 IV A7 III 
LaunchedAugust 2020February 2018More modern by 30 months
Display resolution1040k922kCrisper display (+118k dot)
Selfie screen Take selfies

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

 A7 III E-M10 IV 

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

 E-M10 IV A7 III 
Manual focus Very exact focusing
Display typeTiltingTiltingTilting display
Display size3"3"Same display sizing
Touch display Easily navigate

Olympus E-M10 IV vs Sony A7 III Physical Comparison

In case you're going to carry around your camera regularly, you need to factor in its weight and volume. The Olympus E-M10 IV comes with external dimensions of 122mm x 84mm x 49mm (4.8" x 3.3" x 1.9") with a weight of 383 grams (0.84 lbs) and the Sony A7 III has sizing of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 650 grams (1.43 lbs).

Check the Olympus E-M10 IV and Sony A7 III in the new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an Interchangeable Lens Camera will differ based on the lens you are utilizing at that moment. Underneath is a front view sizing comparison of the E-M10 IV and the A7 III.

Olympus E-M10 IV vs Sony A7 III size comparison

Using dimensions and weight, the portability grade of the E-M10 IV and A7 III is 81 and 63 respectively.

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

Olympus E-M10 IV vs Sony A7 III Sensor Comparison

Sometimes, it can be difficult to visualise the contrast between sensor sizes just by reading specifications. The image underneath should offer you a better sense of the sensor dimensions in the E-M10 IV and A7 III.

Plainly, the 2 cameras feature different megapixel count and different sensor sizes. The E-M10 IV because of its tinier sensor will make getting shallow DOF more difficult and the Sony A7 III will offer you greater detail as a result of its extra 4MP. Greater resolution will enable you to crop photos way more aggressively. The more modern E-M10 IV is going to have an advantage in sensor innovation.

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

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

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

Portrait Comparison

Olympus E-M10 IV Portrait photography details
Sony A7 III Portrait photography details
77
manual focus
good MP (20 megapixels)
sensor size is nice (Four Thirds)
features face detection focusing
exports RAW files
84
focusing manually
decent MP (24 megapixels)
big sensor size (Full frame)
comes with face detect focus
supports RAW formats
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Street Comparison

Olympus E-M10 IV Street photography information
Sony A7 III Street photography information
84
screen tilts
built in image stabilization (Sensor based 5-axis)
sensor size is nice (Four Thirds)
exports RAW files
features focus via touch
very good ISO range (25,600)
78
screen tilts
image stabilization (Sensor based 5-axis)
big sensor size (Full frame)
supports RAW formats
has focus via touch
environment sealing
great high ISO (51,200)
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Sports Comparison

Sports photography with Olympus E-M10 IV
Sports photography with Sony A7 III
72
quiet shooting (1/16,000s)
built in image stabilization (Sensor based 5-axis)
good MP (20MP)
sensor size is nice (Four Thirds)
features tracking autofocus
lack of phase detect AF
87
high shutter speed (1/8,000 seconds)
image stabilization (Sensor based 5-axis)
decent MP (24MP)
big sensor size (Full frame)
comes with tracking focus
environment sealing
better than average battery pack (610 per charge)
has phase detect auto focus
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Travel Comparison

Olympus E-M10 IV Travel photography highlights
Sony A7 III Travel photography highlights
84
connects via bluetooth
features focus via touch
good MP (20MP)
built-in flash
display is selfie friendly
73
better than average battery pack (610 per charge)
environment sealing
connects via bluetooth
has focus via touch
decent MP (24 megapixels)
screen is not selfie friendly
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Landscape Comparison

Olympus E-M10 IV Landscape photography highlights
Sony A7 III Landscape photography highlights
82
manual focus
interchangeable lenses (Micro Four Thirds mount)
screen size is good (3 inch)
built in image stabilization (Sensor based 5-axis)
good MP (20MP)
sensor size is nice (Four Thirds)
very good ISO range (25,600)
exports RAW files
85
focusing manually
swap lenses (Sony E mount)
pretty good screen size (3 inch)
image stabilization (Sensor based 5-axis)
decent MP (24 megapixels)
big sensor size (Full frame)
great high ISO (51,200)
supports RAW formats
environment sealing
better than average battery pack (610 per charge)
2 card slots
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Vlogging Comparison

Vlogging with Olympus E-M10 IV
Vlogging with Sony A7 III
78
display is selfie friendly
touchscreen enabled
built in image stabilization (Sensor based 5-axis)
features face detection focusing
high res video (3840 x 2160 pixels)
missing external mic port
36
touchscreen capability
image stabilization (Sensor based 5-axis)
comes with face detect focus
video resolution high (3840 x 2160 pixels)
has microphone support
screen is not selfie friendly
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Olympus E-M10 IV vs Sony A7 III Specifications

Detailed spec comparison table for Olympus E-M10 IV and Sony A7 III
 Olympus OM-D E-M10 IVSony Alpha A7 III
General Information
Manufacturer Olympus Sony
Model type Olympus OM-D E-M10 IV Sony Alpha A7 III
Class Entry-Level Mirrorless Pro Mirrorless
Revealed 2020-08-04 2018-02-27
Physical type SLR-style mirrorless SLR-style mirrorless
Sensor Information
Processor 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 area 226.2mm² 852.0mm²
Sensor resolution 20 megapixel 24 megapixel
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2 and 16:9
Max resolution 5184 x 3888 6000 x 4000
Max native ISO 25600 51200
Max enhanced ISO - 204800
Lowest native ISO 200 100
RAW format
Lowest enhanced ISO 100 50
Autofocusing
Focus manually
AF touch
Continuous AF
Single AF
AF tracking
Selective AF
Center weighted AF
AF multi area
AF live view
Face detection AF
Contract detection AF
Phase detection AF
Total focus points 121 693
Lens
Lens mount type Micro Four Thirds Sony E
Available lenses 107 121
Focal length multiplier 2.1 1
Screen
Type of screen Tilting Tilting
Screen diagonal 3 inches 3 inches
Screen resolution 1,040 thousand dots 922 thousand dots
Selfie friendly
Liveview
Touch capability
Viewfinder Information
Viewfinder type Electronic Electronic
Viewfinder resolution 2,360 thousand dots 2,359 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
Max silent shutter speed 1/16000s -
Continuous shutter rate 8.7 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 7.20 m (at ISO 200) no built-in flash
Flash options Redeye, fill-in, off, redeye slow-sync (1st-curtain), slow sync (1st-curtain), slow sync (2nd-curtain), manual no built-in flash
Hot shoe
Auto exposure bracketing
White balance 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 3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 25p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 24p / 102 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 60p / 52 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 50p / 52 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 30p / 52 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 25p / 52 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 24p / 52 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)
Max video resolution 3840x2160 3840x2160
Video data 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 383 gr (0.84 lbs) 650 gr (1.43 lbs)
Physical dimensions 122 x 84 x 49mm (4.8" x 3.3" x 1.9") 127 x 96 x 74mm (5.0" x 3.8" x 2.9")
DXO scores
DXO Overall 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 360 photographs 610 photographs
Type of battery Battery Pack Battery Pack
Battery ID BLS-50 NP-FZ100
Self timer Yes (2 or 12 sec, custom) Yes (2 or 10 sec; continuous (3 or 5 exposures))
Time lapse shooting
Type of storage SD/SDHC/SDXC (UHS-II supported) SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
Card slots One Two
Launch cost $699 $1,998