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Olympus E-M1 II vs Sony A7R IV

Portability
68
Imaging
59
Features
93
Overall
72
Olympus OM-D E-M1 Mark II front
 
Sony Alpha A7R IV front
Portability
62
Imaging
81
Features
93
Overall
85

Olympus E-M1 II vs Sony A7R IV Key Specs

Olympus E-M1 II
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Fully Articulated Display
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 574g - 134 x 91 x 67mm
  • Announced September 2016
  • Replaced the Olympus E-M1
  • Later Model is Olympus E-M1 III
Sony A7R IV
(Full Review)
  • 61MP - Full frame Sensor
  • 3" Tilting Screen
  • ISO 100 - 32000 (Increase 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
  • Released July 2019
  • Older Model is Sony A7R III
  • Later Model is Sony A7R V
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Olympus E-M1 II vs Sony A7R IV Overview

Here is a complete assessment of the Olympus E-M1 II and Sony A7R IV, both Pro Mirrorless cameras by manufacturers Olympus and Sony. There exists a considerable gap among the resolutions of the E-M1 II (20MP) and A7R IV (61MP) and the E-M1 II (Four Thirds) and A7R IV (Full frame) come with different sensor sizes.

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The E-M1 II was introduced 3 years before the A7R IV and that is a fairly large difference as far as camera technology is concerned. Both of the cameras come with the identical body type (SLR-style mirrorless).

Before going straight into a more detailed comparison, below is a concise overview of how the E-M1 II matches up versus the A7R IV in terms of portability, imaging, features and an overall rating.

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Reasons to pick Olympus E-M1 II over the Sony A7R IV

 E-M1 II A7R IV 
Screen typeFully ArticulatedTiltingFully Articulating screen
Selfie screen Easy selfies

Reasons to pick Sony A7R IV over the Olympus E-M1 II

 A7R IV E-M1 II 
ReleasedJuly 2019September 2016Fresher by 34 months
Screen resolution1440k1037kSharper screen (+403k dot)

Common features in the Olympus E-M1 II and Sony A7R IV

 E-M1 II A7R IV 
Focus manually Very precise focus
Screen dimension3"3"Identical screen dimensions
Touch screen Quickly navigate

Olympus E-M1 II vs Sony A7R IV Physical Comparison

If you're intending to carry your camera often, you need to factor in its weight and size. The Olympus E-M1 II provides exterior dimensions of 134mm x 91mm x 67mm (5.3" x 3.6" x 2.6") along with a weight of 574 grams (1.27 lbs) and the Sony A7R IV has specifications of 129mm x 96mm x 78mm (5.1" x 3.8" x 3.1") and a weight of 665 grams (1.47 lbs).

Compare the Olympus E-M1 II and Sony A7R IV in our newest Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember, the weight of an ILC will vary dependant on the lens you are utilising during that time. Here is the front view physical size comparison of the E-M1 II against the A7R IV.

Olympus E-M1 II vs Sony A7R IV size comparison

Using dimensions and weight, the portability grade of the E-M1 II and A7R IV is 68 and 62 respectively.

Olympus E-M1 II vs Sony A7R IV top view buttons comparison

Olympus E-M1 II vs Sony A7R IV Sensor Comparison

Typically, it's difficult to picture the difference in sensor sizing only by seeing specifications. The visual below should offer you a much better sense of the sensor sizes in the E-M1 II and A7R IV.

Plainly, both of the cameras posses different megapixel count and different sensor sizing. The E-M1 II having a smaller sensor is going to make getting shallower depth of field harder and the Sony A7R IV will show greater detail using its extra 41MP. Higher resolution can also make it easier to crop pictures somewhat more aggressively. The older E-M1 II will be disadvantaged when it comes to sensor tech.

Olympus E-M1 II vs Sony A7R IV sensor size comparison

Olympus E-M1 II vs Sony A7R IV Screen and ViewFinder

Olympus E-M1 II vs Sony A7R IV Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus E-M1 II Portrait photography details
Sony A7R IV Portrait photography details
75
focusing manually
decent megapixels (20MP)
good sensor size (Four Thirds)
has face detect autofocus
saves RAW formats
88
focusing manually
resolution is amazing (61 megapixels)
sensor size is big (Full frame)
includes face detection autofocus
supports RAW files
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Street Comparison

Olympus E-M1 II Street photography information
Sony A7R IV Street photography information
78
fully articulated screen
has image stabilization (Sensor based 5-axis)
good sensor size (Four Thirds)
saves RAW formats
has focus via touch
environment proofing
lighter than others (574g)
good ISO range (25,600)
79
screen tilts
has image stabilization (Sensor based 5-axis)
sensor size is big (Full frame)
supports RAW files
comes with focus via touch
environment proof
above average high ISO (32,000)
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Sports Comparison

Olympus E-M1 II Sports photography info
Sony A7R IV Sports photography info
74
max shutter speed is good (1/8,000s)
silent shooting (1/32,000s)
high fps (60.0 frames/s)
has image stabilization (Sensor based 5-axis)
decent megapixels (20 megapixels)
good sensor size (Four Thirds)
has tracking focus
environment proofing
has phase detect autofocus
bad battery (350 shots)
90
maximum shutter speed is high (1/8,000 seconds)
has image stabilization (Sensor based 5-axis)
resolution is amazing (61 megapixels)
sensor size is big (Full frame)
includes tracking autofocus
environment proof
good battery pack (670 CIPA)
comes with phase detect autofocus
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Travel Comparison

Olympus E-M1 II Travel photography info
Sony A7R IV Travel photography info
72
lighter than others (574 grams)
environment proofing
has focus via touch
decent megapixels (20 megapixels)
screen is selfie friendly
bad battery (350 CIPA)
74
good battery pack (670 shots)
environment proof
supports bluetooth
comes with focus via touch
resolution is amazing (61MP)
does not have a selfie friendly display
Photography Glossary

Landscape Comparison

Olympus E-M1 II Landscape photography factors
Sony A7R IV Landscape photography factors
76
focusing manually
change lenses (Micro Four Thirds mount)
screen size is decent (3 inch)
has image stabilization (Sensor based 5-axis)
decent megapixels (20MP)
good sensor size (Four Thirds)
doesnt have anti-alias filter
good ISO range (25,600)
saves RAW formats
environment proofing
has dual storage slots
bad battery (350 shots)
88
focusing manually
switch lenses (Sony E mount)
screen is a good size (3 inch)
has image stabilization (Sensor based 5-axis)
resolution is amazing (61 megapixels)
sensor size is big (Full frame)
doesnt have low pass filter
above average high ISO (32,000)
supports RAW files
environment proof
good battery pack (670 per charge)
two card slots
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Vlogging Comparison

Vlogging with Olympus E-M1 II
Vlogging with Sony A7R IV
79
screen is selfie friendly
built-in touchscreen
has image stabilization (Sensor based 5-axis)
has face detect autofocus
video resolution high (4096 x 2160 pxls)
has mic jack
lighter than others (574 grams)
37
touchscreen
has image stabilization (Sensor based 5-axis)
includes face detection autofocus
great video quality (3840 x 2160 pxls)
does have external mic socket
does not have a selfie friendly display
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Olympus E-M1 II vs Sony A7R IV Specifications

Detailed spec comparison table for Olympus E-M1 II and Sony A7R IV
 Olympus OM-D E-M1 Mark IISony Alpha A7R IV
General Information
Brand Olympus Sony
Model Olympus OM-D E-M1 Mark II Sony Alpha A7R IV
Class Pro Mirrorless Pro Mirrorless
Announced 2016-09-19 2019-07-16
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 dimensions 17.4 x 13mm 35.8 x 23.8mm
Sensor surface area 226.2mm² 852.0mm²
Sensor resolution 20MP 61MP
Anti aliasing filter
Aspect ratio 4:3 1:1, 4:3, 3:2 and 16:9
Peak resolution 5184 x 3888 9504 x 6336
Highest native ISO 25600 32000
Highest enhanced ISO - 102800
Minimum native ISO 200 100
RAW photos
Minimum enhanced ISO 64 50
Autofocusing
Focus manually
Autofocus touch
Autofocus continuous
Single autofocus
Autofocus tracking
Selective autofocus
Center weighted autofocus
Multi area autofocus
Autofocus live view
Face detect autofocus
Contract detect autofocus
Phase detect autofocus
Number of focus points 121 567
Lens
Lens mounting type Micro Four Thirds Sony E
Amount of lenses 107 121
Focal length multiplier 2.1 1
Screen
Type of display Fully Articulated Tilting
Display sizing 3 inches 3 inches
Resolution of display 1,037k dots 1,440k dots
Selfie friendly
Liveview
Touch friendly
Viewfinder Information
Viewfinder type Electronic Electronic
Viewfinder resolution 2,360k dots 5,760k dots
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.74x 0.78x
Features
Min shutter speed 60 seconds 30 seconds
Max shutter speed 1/8000 seconds 1/8000 seconds
Max quiet shutter speed 1/32000 seconds -
Continuous shutter rate 60.0fps 10.0fps
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change white balance
Image stabilization
Integrated flash
Flash range 9.10 m (at ISO 100) no built-in flash
Flash modes Redeye, Fill-in, Flash Off, Red-eye Slow sync.(1st curtain), Slow sync.(1st curtain), Slow sync.(2nd curtain), Manual Flash off, Autoflash, Fill-flash, Slow Sync., Rear Sync., Red-eye reduction, Wireless, Hi-speed sync.
Hot shoe
AEB
White balance bracketing
Max flash synchronize 1/250 seconds 1/250 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, 3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM 3840 x 2160 @ 30p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM
Highest video resolution 4096x2160 3840x2160
Video format MOV, H.264 MPEG-4, XAVC S, H.264
Mic port
Headphone port
Connectivity
Wireless Built-In Built-In
Bluetooth
NFC
HDMI
USB USB 3.0 (5 GBit/sec) USB 3.1 Gen 1(5 GBit/sec)
GPS None None
Physical
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 574g (1.27 lbs) 665g (1.47 lbs)
Dimensions 134 x 91 x 67mm (5.3" x 3.6" x 2.6") 129 x 96 x 78mm (5.1" x 3.8" x 3.1")
DXO scores
DXO Overall score 80 99
DXO Color Depth score 23.7 26.0
DXO Dynamic range score 12.8 14.8
DXO Low light score 1312 3344
Other
Battery life 350 pictures 670 pictures
Battery type Battery Pack Battery Pack
Battery model BLH-1 NP-FZ100
Self timer Yes (2 or 12 secs, custom) Yes
Time lapse shooting
Storage type Dual SD/SDHC/SDXC slots Dual SD/SDHC/SDXC (UHS-II compatible)
Card slots 2 2
Price at release $1,700 $3,498