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Olympus E-M5 III vs Sony RX100

Portability
80
Imaging
62
Features
88
Overall
72
Olympus OM-D E-M5 III front
 
Sony Cyber-shot DSC-RX100 front
Portability
91
Imaging
50
Features
68
Overall
57

Olympus E-M5 III vs Sony RX100 Key Specs

Olympus E-M5 III
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Fully Articulated Display
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Maximum Shutter
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 414g - 125 x 85 x 50mm
  • Released October 2019
  • Older Model is Olympus E-M5 II
  • Replacement is OM System OM-5
Sony RX100
(Full Review)
  • 20MP - 1" Sensor
  • 3" Fixed Display
  • ISO 100 - 25600
  • Optical Image Stabilization
  • 1920 x 1080 video
  • 28-100mm (F1.8-4.9) lens
  • 240g - 102 x 58 x 36mm
  • Introduced August 2012
  • Successor is Sony RX100 II
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Olympus E-M5 III vs Sony RX100 Overview

Its time to look more closely at the Olympus E-M5 III vs Sony RX100, one being a Advanced Mirrorless and the other is a Large Sensor Compact by competitors Olympus and Sony. The image resolution of the E-M5 III (20MP) and the RX100 (20MP) is very similar but the E-M5 III (Four Thirds) and RX100 (1") offer different sensor measurements.

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The E-M5 III was announced 7 years later than the RX100 and that is quite a serious gap as far as technology is concerned. Both of the cameras have different body design with the Olympus E-M5 III being a SLR-style mirrorless camera and the Sony RX100 being a Large Sensor Compact camera.

Before diving straight to a complete comparison, here is a concise summary of how the E-M5 III matches up vs the RX100 with respect to portability, imaging, features and an overall grade.

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Reasons to pick Olympus E-M5 III over the Sony RX100

 E-M5 III RX100 
IntroducedOctober 2019August 2012More recent by 87 months
Display typeFully ArticulatedFixed Fully Articulating display
Selfie screen Take selfies
Touch display Easily navigate

Reasons to pick Sony RX100 over the Olympus E-M5 III

 RX100 E-M5 III 
Display resolution1229k1040kCrisper display (+189k dot)

Common features in the Olympus E-M5 III and Sony RX100

 E-M5 III RX100 
Focus manually Dial precise focus
Display dimensions3"3"Equal display measurements

Olympus E-M5 III vs Sony RX100 Physical Comparison

When you are looking to lug around your camera often, you'll need to consider its weight and proportions. The Olympus E-M5 III provides physical dimensions of 125mm x 85mm x 50mm (4.9" x 3.3" x 2.0") and a weight of 414 grams (0.91 lbs) and the Sony RX100 has measurements of 102mm x 58mm x 36mm (4.0" x 2.3" x 1.4") with a weight of 240 grams (0.53 lbs).

See the Olympus E-M5 III vs Sony RX100 in the all new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Bear in mind, the weight of an Interchangeable Lens Camera will vary based on the lens you are using at that time. Following is a front view dimensions comparison of the E-M5 III and the RX100.

Olympus E-M5 III vs Sony RX100 size comparison

Taking into consideration dimensions and weight, the portability rating of the E-M5 III and RX100 is 80 and 91 respectively.

Olympus E-M5 III vs Sony RX100 top view buttons comparison

Olympus E-M5 III vs Sony RX100 Sensor Comparison

Sometimes, it is tough to picture the contrast between sensor measurements just by reviewing specifications. The visual here might give you a much better sense of the sensor sizes in the E-M5 III and RX100.

Plainly, both of these cameras have the same megapixel count but different sensor measurements. The E-M5 III features the larger sensor which will make obtaining shallow depth of field easier. The newer E-M5 III should have an edge when it comes to sensor innovation.

Olympus E-M5 III vs Sony RX100 sensor size comparison

Olympus E-M5 III vs Sony RX100 Screen and ViewFinder

Olympus E-M5 III vs Sony RX100 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with Olympus E-M5 III
Portrait photography with Sony RX100
77
focusing manually
good megapixels (20MP)
decent sensor size (Four Thirds)
includes face detect autofocus
supports RAW files
64
has manual focus
high flash sync (1/2,000 seconds)
megapixel count good (20 megapixels)
sensor size is nice (1")
supports face detection autofocus
supports RAW formats
no external flash support
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Street Comparison

Street photography with Olympus E-M5 III
Street photography with Sony RX100
83
screen articulates
image stabilization (Sensor based 5-axis)
decent sensor size (Four Thirds)
supports RAW files
includes focus via touch
environment sealing
good ISO range (25,600)
79
image stabilization (Optical)
sensor size is nice (1")
supports RAW formats
lighter than competition (240 grams)
above average ISO range (25,600)
screen does not articulate
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Sports Comparison

Olympus E-M5 III as a Sports photography camera
Sony RX100 as a Sports photography camera
76
great max shutter speed (1/8,000s)
quiet shooting (1/32,000s)
max fps high (30.0 frames/s)
image stabilization (Sensor based 5-axis)
good megapixels (20 megapixels)
decent sensor size (Four Thirds)
includes tracking focus
environment sealing
has phase detect autofocus
not so great battery pack (310 CIPA)
65
image stabilization (Optical)
megapixel count good (20MP)
sensor size is nice (1")
supports tracking autofocus
no phase detect autofocus
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Travel Comparison

Olympus E-M5 III as a Travel photography camera
Sony RX100 as a Travel photography camera
77
environment sealing
supports bluetooth
includes focus via touch
good megapixels (20MP)
screen is selfie friendly
not so great battery pack (310 shots)
79
lighter than competition (240g)
megapixel count good (20MP)
has built in flash
relatively wide (28mm)
fast maximum aperture (f1.8)
does not offer selfie friendly display
Photography Glossary

Landscape Comparison

Landscape photography with Olympus E-M5 III
Landscape photography with Sony RX100
77
focusing manually
switch lenses (Micro Four Thirds mount)
screen size is good (3 inch)
image stabilization (Sensor based 5-axis)
good megapixels (20 megapixels)
decent sensor size (Four Thirds)
good ISO range (25,600)
supports RAW files
environment sealing
not so great battery pack (310 shots)
74
has manual focus
relatively wide (28mm)
fast maximum aperture (f1.8)
screen is a good size (3")
image stabilization (Optical)
megapixel count good (20 megapixels)
sensor size is nice (1")
above average ISO range (25,600)
supports RAW formats
fixed lens (fixed lens mount)
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Vlogging Comparison

Olympus E-M5 III Vlogging features
Sony RX100 Vlogging features
84
screen is selfie friendly
touchscreen functionality
image stabilization (Sensor based 5-axis)
includes face detect autofocus
high quality video (4096 x 2160 pixels)
has mic jack
38
relatively wide (28mm)
fast maximum aperture (f1.8)
image stabilization (Optical)
supports face detection autofocus
high quality video (1920 x 1080 pixels)
lighter than competition (240g)
does not offer selfie friendly display
does not have external microphone socket
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Olympus E-M5 III vs Sony RX100 Specifications

Detailed spec comparison table for Olympus E-M5 III and Sony RX100
 Olympus OM-D E-M5 IIISony Cyber-shot DSC-RX100
General Information
Make Olympus Sony
Model type Olympus OM-D E-M5 III Sony Cyber-shot DSC-RX100
Class Advanced Mirrorless Large Sensor Compact
Released 2019-10-17 2012-08-28
Physical type SLR-style mirrorless Large Sensor Compact
Sensor Information
Chip TruePic VIII -
Sensor type MOS CMOS
Sensor size Four Thirds 1"
Sensor measurements 17.4 x 13mm 13.2 x 8.8mm
Sensor surface area 226.2mm² 116.2mm²
Sensor resolution 20 megapixels 20 megapixels
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 1:1, 4:3, 3:2 and 16:9
Peak resolution 5184 x 3888 5472 x 3648
Highest native ISO 25600 25600
Lowest native ISO 200 100
RAW format
Lowest enhanced ISO 64 -
Autofocusing
Manual focusing
Touch focus
Autofocus continuous
Autofocus single
Tracking autofocus
Autofocus selectice
Center weighted autofocus
Multi area autofocus
Live view autofocus
Face detect focus
Contract detect focus
Phase detect focus
Total focus points 121 25
Lens
Lens support Micro Four Thirds fixed lens
Lens zoom range - 28-100mm (3.6x)
Highest aperture - f/1.8-4.9
Macro focusing range - 5cm
Amount of lenses 107 -
Crop factor 2.1 2.7
Screen
Type of display Fully Articulated Fixed Type
Display diagonal 3 inches 3 inches
Display resolution 1,040k dots 1,229k dots
Selfie friendly
Liveview
Touch friendly
Display tech - WhiteMagic TFT LCD
Viewfinder Information
Viewfinder Electronic None
Viewfinder resolution 2,360k dots -
Viewfinder coverage 100 percent -
Viewfinder magnification 0.68x -
Features
Min shutter speed 60 seconds 30 seconds
Max shutter speed 1/8000 seconds 1/2000 seconds
Max quiet shutter speed 1/32000 seconds -
Continuous shutter rate 30.0fps 10.0fps
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change white balance
Image stabilization
Inbuilt flash
Flash distance no built-in flash -
Flash options Auto, redeye, fill, off, redeye slow sync, slow sync, 2nd-curtain slow sync, manual Auto, On, Off, Slow Sync
Hot shoe
AEB
WB bracketing
Max flash synchronize 1/250 seconds 1/2000 seconds
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported video resolutions 4096 x 2160 @ 24p / 237 Mbps, MOV, H.264, Linear PCM 1920 x 1080 (60 fps), 1440 x 1080 (30 fps), 1280 x 720 (30 fps), 640 x 480 (30 fps)
Highest video resolution 4096x2160 1920x1080
Video file format MPEG-4, H.264 MPEG-4, AVCHD
Microphone port
Headphone port
Connectivity
Wireless Built-In Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 414g (0.91 lb) 240g (0.53 lb)
Physical dimensions 125 x 85 x 50mm (4.9" x 3.3" x 2.0") 102 x 58 x 36mm (4.0" x 2.3" x 1.4")
DXO scores
DXO Overall rating not tested 66
DXO Color Depth rating not tested 22.6
DXO Dynamic range rating not tested 12.4
DXO Low light rating not tested 390
Other
Battery life 310 shots 330 shots
Form of battery Battery Pack Battery Pack
Battery ID BLN-1 NP-BX1
Self timer Yes (2 or 10 secs, custom) Yes (2 or 10 sec, Portrait 1/2)
Time lapse shooting With downloadable app
Storage type SD/SDHC/SDXC (UHS-II supported) SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
Card slots Single Single
Pricing at release $1,199 $448