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Olympus E-M10 IV vs Sony A7 IV

Portability
81
Imaging
62
Features
83
Overall
70
Olympus OM-D E-M10 IV front
 
Sony Alpha A7 IV front
Portability
61
Imaging
80
Features
92
Overall
84

Olympus E-M10 IV vs Sony A7 IV 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
  • Launched August 2020
  • Superseded the Olympus E-M10 III
Sony A7 IV
(Full Review)
  • 33MP - Full frame Sensor
  • 3" Fully Articulated Display
  • ISO 100 - 51200 (Push to 204800)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 699g - 129 x 97 x 81mm
  • Announced October 2021
  • Superseded the Sony A7 III
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Olympus E-M10 IV vs Sony A7 IV Overview

Its time to look more in depth at the Olympus E-M10 IV and Sony A7 IV, one is a Entry-Level Mirrorless and the other is a Pro Mirrorless by competitors Olympus and Sony. There exists a crucial gap among the image resolutions of the E-M10 IV (20MP) and A7 IV (33MP) and the E-M10 IV (Four Thirds) and A7 IV (Full frame) offer totally different sensor measurements.

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The E-M10 IV was released 14 months before the A7 IV making them a generation away from one another. Both of the cameras feature the same body design (SLR-style mirrorless).

Before delving into a full comparison, here is a simple overview of how the E-M10 IV matches up versus the A7 IV with regard to portability, imaging, features and an overall mark.

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

 E-M10 IV A7 IV 

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

 A7 IV E-M10 IV 
AnnouncedOctober 2021August 2020Newer by 14 months
Display typeFully articulatedTiltingFully Articulating display
Display resolution1440k1040kSharper display (+400k dot)

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

 E-M10 IV A7 IV 
Focus manually Dial exact focusing
Display size3"3"Same display measurements
Selfie screen Both are selfie friendly
Touch friendly display Easily navigate

Olympus E-M10 IV vs Sony A7 IV Physical Comparison

For anybody who is intending to travel with your camera, you are going to need to consider its weight and volume. The Olympus E-M10 IV comes with exterior dimensions of 122mm x 84mm x 49mm (4.8" x 3.3" x 1.9") having a weight of 383 grams (0.84 lbs) while the Sony A7 IV has sizing of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") and a weight of 699 grams (1.54 lbs).

Look at the Olympus E-M10 IV and Sony A7 IV 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 change based on the lens you are using at the time. Below is a front view proportions comparison of the E-M10 IV vs the A7 IV.

Olympus E-M10 IV vs Sony A7 IV size comparison

Considering dimensions and weight, the portability grade of the E-M10 IV and A7 IV is 81 and 61 respectively.

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

Olympus E-M10 IV vs Sony A7 IV Sensor Comparison

Normally, it can be tough to visualise the difference in sensor dimensions purely by viewing a spec sheet. The picture here will provide you a more clear sense of the sensor sizes in the E-M10 IV and A7 IV.

As you can see, both of these cameras come with different resolutions and different sensor dimensions. The E-M10 IV featuring a smaller sensor will make shooting shallow depth of field more challenging and the Sony A7 IV will result in greater detail as a result of its extra 13MP. Greater resolution will let you crop photos a good deal more aggressively. The more aged E-M10 IV will be disadvantaged when it comes to sensor technology.

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

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

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

Portrait Comparison

Olympus E-M10 IV Portrait photography highlights
Sony A7 IV Portrait photography highlights
77
you can focus manually
MP count decent (20 megapixels)
sensor size is nice (Four Thirds)
supports face detection focusing
supports RAW files
81
manual focus
excellent MP (33 megapixels)
large sensor size (Full frame)
offers face detection focus
delivers RAW formats
no liveview feature
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Street Comparison

Olympus E-M10 IV Street photography information
Sony A7 IV Street photography information
84
has a tilting screen
has image stabilization (Sensor based 5-axis)
sensor size is nice (Four Thirds)
supports RAW files
supports touch focus
above average high ISO (25,600)
79
image stabilization (Sensor based 5-axis)
large sensor size (Full frame)
delivers RAW formats
provides touch to focus
environment proofing
above average high ISO (51,200)
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Sports Comparison

Olympus E-M10 IV Sports photography info
Sony A7 IV Sports photography info
72
silent mode (1/16,000 seconds)
has image stabilization (Sensor based 5-axis)
MP count decent (20 megapixels)
sensor size is nice (Four Thirds)
supports tracking autofocus
lacks phase detect AF
84
great max shutter speed (1/8,000 seconds)
image stabilization (Sensor based 5-axis)
excellent MP (33MP)
large sensor size (Full frame)
offers tracking autofocus
environment proofing
great battery life (600 per charge)
comes with phase detect auto focus
no liveview feature
Photography Glossary

Travel Comparison

Olympus E-M10 IV Travel photography details
Sony A7 IV Travel photography details
84
connects via bluetooth
supports touch focus
MP count decent (20 megapixels)
flash built-in
selfie friendly screen
80
great battery life (600 per charge)
environment proofing
supports bluetooth
provides touch to focus
excellent MP (33 megapixels)
selfie friendly screen
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Landscape Comparison

Olympus E-M10 IV as a Landscape photography camera
Sony A7 IV as a Landscape photography camera
82
you can focus manually
change lenses (Micro Four Thirds mount)
screen size is decent (3")
has image stabilization (Sensor based 5-axis)
MP count decent (20MP)
sensor size is nice (Four Thirds)
above average high ISO (25,600)
supports RAW files
83
manual focus
swap lenses (Sony E mount)
screen is a decent size (3 inch)
image stabilization (Sensor based 5-axis)
excellent MP (33 megapixels)
large sensor size (Full frame)
above average high ISO (51,200)
delivers RAW formats
environment proofing
great battery life (600 per charge)
two card slots
no liveview feature
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Vlogging Comparison

Olympus E-M10 IV Vlogging details
Sony A7 IV Vlogging details
78
selfie friendly screen
touchscreen capability
has image stabilization (Sensor based 5-axis)
supports face detection focusing
video resolution high (3840 x 2160 pxls)
does not have external mic socket
80
selfie friendly screen
built-in touchscreen
image stabilization (Sensor based 5-axis)
offers face detection focus
video res high (3840 x 2160 resolution)
does have external mic socket
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Olympus E-M10 IV vs Sony A7 IV Specifications

Detailed spec comparison table for Olympus E-M10 IV and Sony A7 IV
 Olympus OM-D E-M10 IVSony Alpha A7 IV
General Information
Brand Name Olympus Sony
Model type Olympus OM-D E-M10 IV Sony Alpha A7 IV
Type Entry-Level Mirrorless Pro Mirrorless
Launched 2020-08-04 2021-10-21
Physical type SLR-style mirrorless SLR-style mirrorless
Sensor Information
Powered by TruePic VIII -
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 33MP
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 1:1, 4:3, 3:2 and 16:9
Max resolution 5184 x 3888 7008 x 4672
Max native ISO 25600 51200
Max enhanced ISO - 204800
Min native ISO 200 100
RAW support
Min enhanced ISO 100 50
Autofocusing
Manual focusing
AF touch
AF continuous
AF single
AF tracking
AF selectice
Center weighted AF
Multi area AF
Live view AF
Face detection focusing
Contract detection focusing
Phase detection focusing
Total focus points 121 759
Lens
Lens mount type Micro Four Thirds Sony E
Number of lenses 107 172
Focal length multiplier 2.1 1
Screen
Screen type Tilting Fully articulated
Screen diagonal 3 inch 3 inch
Screen resolution 1,040k dots 1,440k dots
Selfie friendly
Liveview
Touch screen
Viewfinder Information
Viewfinder Electronic Electronic
Viewfinder resolution 2,360k dots 3,690k dots
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.62x 0.78x
Features
Minimum shutter speed 60 secs 30 secs
Fastest shutter speed 1/4000 secs 1/8000 secs
Fastest silent shutter speed 1/16000 secs -
Continuous shutter rate 8.7 frames/s 10.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Change WB
Image stabilization
Integrated 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
External flash
Auto exposure bracketing
WB bracketing
Fastest flash synchronize 1/250 secs 1/200 secs
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Supported 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 3843840 x 2160 @ 60p / 200 Mbps, XAVC HS, MP4, H.265, Linear PCM3840 x 2160 @ 50p / 200 Mbps, XAVC HS, MP4, H.265, Linear PCM3840 x 2160 @ 30p / 140 Mbps, XAVC HS, MP4, H.265, Linear PCM3840 x 2160 @ 25p / 140 Mbps, XAVC HS, MP4, H.265, Linear PCM3840 x 2160 @ 24p / 100 Mbps, XAVC HS, MP4, H.265, Linear PCM3840 x 2160 @ 60p / 600 Mbps, XAVC S-I, MP4, H.264, Linear PCM3840 x 2160 @ 50p / 500 Mbps, XAVC S-I, MP4, H.264, Linear PCM3840 x 2160 @ 30p / 300 Mbps, XAVC S-I, MP4, H.264, Linear PCM3840 x 2160 @ 25p / 250 Mbps, XAVC S-I, MP4, H.264, Linear PCM3840 x 2160 @ 24p / 240 Mbps, XAVC S-I, MP4, H.264, Linear PCM3840 x 2160 @ 120p / 280 Mbps, XAVC S, MP4, H.264, Linear PCM3840 x 2160 @ 100p / 280 Mbps, XAVC S, MP4, H.264, Linear PCM3840 x 2160 @ 60p / 200 Mbps, XAVC S, MP4, H.264, Linear PCM3840 x 2160 @ 50p / 200 Mbps, XAVC S, MP4, H.264, Linear PCM3840 x 2160 @ 30p /
Max video resolution 3840x2160 3840x2160
Video file format MPEG-4, H.264 MPEG-4, XAVC S, XAVC HS, XAVC S-I, H.264, H.265
Mic port
Headphone port
Connectivity
Wireless Built-In Built-In
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) Yes (USB PD supported)
GPS None None
Physical
Environmental sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 383 grams (0.84 lb) 699 grams (1.54 lb)
Physical dimensions 122 x 84 x 49mm (4.8" x 3.3" x 1.9") 129 x 97 x 81mm (5.1" x 3.8" x 3.2")
DXO scores
DXO Overall rating not tested not tested
DXO Color Depth rating not tested not tested
DXO Dynamic range rating not tested not tested
DXO Low light rating not tested not tested
Other
Battery life 360 images 600 images
Style 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
Storage type SD/SDHC/SDXC (UHS-II supported) Dual SD/CFexpress Type A slots
Card slots Single 2
Launch cost $699 $2,500