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OM System OM-5 vs Sony A7S III

Portability
80 Imaging
63 Features
88 Overall
73
OM System OM-5 front
 
Sony Alpha A7S III front
Portability
61 Imaging
63 Features
92 Overall
74

OM System OM-5 vs Sony A7S III Key Specs

OM System OM-5
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3.00" Fully Articulated Screen
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Max Shutter
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 414g - 125 x 85 x 50mm
  • Announced October 2022
  • Previous Model is Olympus E-M5 III
Sony A7S III
(Full Review)
  • 12MP - Full frame Sensor
  • 3" Fully Articulated Screen
  • ISO 80 - 102400 (Push to 409600)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Maximum Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 699g - 129 x 97 x 81mm
  • Revealed July 2020
  • Succeeded the Sony A7S II
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OM System OM-5 vs Sony A7S III Overview

On this page, we will be looking at the OM System OM-5 versus Sony A7S III, former is a Advanced Mirrorless while the latter is a Pro Mirrorless by manufacturers Olympus and Sony. There exists a considerable gap among the image resolutions of the OM System OM-5 (20MP) and A7S III (12MP) and the OM System OM-5 (Four Thirds) and A7S III (Full frame) posses different sensor size.

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The OM System OM-5 was manufactured 2 years after the A7S III which is a fairly large difference as far as camera technology is concerned. Each of the cameras have the same body design (SLR-style mirrorless).

Before we go into a more detailed comparison, here is a simple highlight of how the OM System OM-5 scores vs the A7S III in terms of portability, imaging, features and an overall score.

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Reasons to pick OM System OM-5 over the Sony A7S III

          

          

            
 OM System OM-5 A7S III 
RevealedOctober 2022July 2020More modern by 28 months
          

        


        

          

            
Reasons to pick Sony A7S III over the OM System OM-5

          

          

            
 A7S III OM System OM-5 
Screen resolution1440k1040kClearer screen (+400k dot)
          

        


        

          

            
Common features in the OM System OM-5 and Sony A7S III

          

          

            
 OM System OM-5 A7S III 
Focus manually  Dial precise focusing
Screen typeFully ArticulatedFully articulatedFully Articulated screen
Screen dimensions3.00"3"Equal screen size
Selfie screen  Both are selfie friendly
Touch screen  Quickly navigate
          

        

        

	
	
	
	

        

          

            
OM System OM-5 vs Sony A7S III Physical Comparison

          

          

            
In case you're going to carry around your camera regularly, you will want to consider its weight and size. The OM System OM-5 has got physical measurements of 125mm x 85mm x 50mm (4.9" x 3.3" x 2.0") with a weight of 414 grams (0.91 lbs) whilst the Sony A7S III has specifications of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") having a weight of 699 grams (1.54 lbs).
Take a look at the OM System OM-5 versus Sony A7S III in our completely new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses
Bear in mind, the weight of an ILC will differ based on the lens you are utilizing during that time. Underneath is a front view sizing comparison of the OM System OM-5 compared to the A7S III.
OM System OM-5 vs Sony A7S III size comparison
Taking into account dimensions and weight, the portability rating of the OM System OM-5 and A7S III is 80 and 61 respectively.
OM System OM-5 vs Sony A7S III top view buttons comparison          

        


        

          

            
OM System OM-5 vs Sony A7S III Sensor Comparison

          

          

            
Normally, it can be difficult to visualize the contrast in sensor sizes only by going through specifications. The image here may provide you a greater sense of the sensor sizing in the OM System OM-5 and A7S III.
To sum up, the two cameras have different megapixels and different sensor sizes. The OM System OM-5 due to its smaller sensor is going to make shooting shallow depth of field harder and the OM System OM-5 will show greater detail due to its extra 8MP. Higher resolution can also make it easier to crop pictures a bit more aggressively. The more recent OM System OM-5 should have an edge in sensor innovation.

            OM System OM-5 vs Sony A7S III sensor size comparison
          

        


        

          

            
OM System OM-5 vs Sony A7S III Screen and ViewFinder

          

          

                      

          OM System OM-5 vs Sony A7S III Screen and Viewfinder comparison        


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Photography Type Scores

          

        

        
Portrait Comparison
OM System OM-5 Portrait photography advice
Sony A7S III Portrait photography advice
77
 you can focus manually
 MP count decent (20 megapixels)
 nice sensor size (Four Thirds)
 features face detect autofocus
 delivers RAW formats
69
 manual focus
 large sensor size (Full frame)
 has face detection focus
 supports RAW files
 megapixel count low (12 megapixels)
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Street Comparison
OM System OM-5 Street photography details
Sony A7S III Street photography details
84
 fully articulated screen
 built in image stabilization (Sensor based 5-axis)
 nice sensor size (Four Thirds)
 delivers RAW formats
 boasts focus via touch
 environment sealing
 great high ISO (25,600)
75
 image stabilization (Sensor based 5-axis)
 large sensor size (Full frame)
 supports RAW files
 boasts touch focus
 environment proofing
 great high ISO (102,400)
Photography Glossary
Sports Comparison
 OM System OM-5 as a Sports photography camera
 Sony A7S III as a Sports photography camera
75
 max shutter speed is good (1/8,000s)
 silent shutter (1/32,000s)
 built in image stabilization (Sensor based 5-axis)
 MP count decent (20 megapixels)
 nice sensor size (Four Thirds)
 features tracking focus
 environment sealing
 sensor has phase detect autofocus
 low battery life (310 per charge)
75
 maximum shutter speed is high (1/8,000s)
 image stabilization (Sensor based 5-axis)
 large sensor size (Full frame)
 has tracking autofocus
 environment proofing
 good battery pack (600 per charge)
 sensor has phase detect auto focus
 megapixel count low (12 megapixels)
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Travel Comparison
OM System OM-5 Travel photography highlights
Sony A7S III Travel photography highlights
77
 environment sealing
 supports bluetooth
 boasts focus via touch
 MP count decent (20 megapixels)
 display is selfie friendly
 low battery life (310 shots)
70
 good battery pack (600 CIPA)
 environment proofing
 supports bluetooth
 boasts touch focus
 screen is selfie friendly
 megapixel count low (12 megapixels)
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Landscape Comparison
OM System OM-5 Landscape photography factors
Sony A7S III Landscape photography factors
78
 you can focus manually
 change lenses (Micro Four Thirds mount)
 screen size is good (3.00")
 built in image stabilization (Sensor based 5-axis)
 MP count decent (20MP)
 nice sensor size (Four Thirds)
 great high ISO (25,600)
 delivers RAW formats
 environment sealing
 low battery life (310 CIPA)
76
 manual focus
 swap lenses (Sony E mount)
 screen is a decent size (3 inches)
 image stabilization (Sensor based 5-axis)
 large sensor size (Full frame)
 great high ISO (102,400)
 supports RAW files
 environment proofing
 good battery pack (600 per charge)
 2 card slots
 megapixel count low (12 megapixels)
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Vlogging Comparison
OM System OM-5 Vlogging information
Sony A7S III Vlogging information
84
 display is selfie friendly
 touchscreen functionality
 built in image stabilization (Sensor based 5-axis)
 features face detect autofocus
 high quality video (4096 x 2160 pxls)
 includes microphone support
77
 screen is selfie friendly
 touchscreen capability
 image stabilization (Sensor based 5-axis)
 has face detection focus
 high res video (3840 x 2160 pixels)
 includes external mic support
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OM System OM-5 vs Sony A7S III Specifications

          

          

                      


          

            Detailed spec comparison table for OM System OM-5 and Sony A7S III
 OM System OM-5Sony Alpha A7S III
General Information
Brand Name Olympus Sony
Model OM System OM-5 Sony Alpha A7S III
Type Advanced Mirrorless Pro Mirrorless
Announced 2022-10-26 2020-07-21
Physical type SLR-style mirrorless SLR-style mirrorless
Sensor Information
Powered by - Bionz XR
Sensor type CMOS BSI-CMOS
Sensor size Four Thirds Full frame
Sensor dimensions 17.4 x 13mm 35.6 x 23.8mm
Sensor area 226.2mm² 847.3mm²
Sensor resolution 20 megapixel 12 megapixel
Anti aliasing filter    
Aspect ratio 1:1, 4:3, 3:2 and  16:9 3:2 and  16:9
Max resolution 5184 x 3888 4240 x 2832
Max native ISO 25600 102400
Max enhanced ISO - 409600
Min native ISO 200 80
RAW photos    
Min enhanced ISO 64 50
Autofocusing
Manual focus    
Autofocus touch    
Continuous autofocus    
Autofocus single    
Autofocus tracking    
Autofocus selectice    
Center weighted autofocus    
Autofocus multi area    
Live view autofocus    
Face detection autofocus    
Contract detection autofocus    
Phase detection autofocus    
Number of focus points 121 759
Lens
Lens mount Micro Four Thirds Sony E
Number of lenses 119 121
Focal length multiplier 2.1 1
Screen
Type of screen Fully Articulated Fully articulated
Screen size 3.00" 3"
Screen resolution 1,040 thousand dots 1,440 thousand dots
Selfie friendly    
Liveview    
Touch functionality    
Viewfinder Information
Viewfinder Electronic Electronic
Viewfinder resolution 2,360 thousand dots 9,440 thousand dots
Viewfinder coverage 100% 100%
Viewfinder magnification 0.68x 0.91x
Features
Min shutter speed 60 seconds 30 seconds
Max shutter speed 1/8000 seconds 1/8000 seconds
Max silent shutter speed 1/32000 seconds -
Continuous shutter rate 10.0fps 10.0fps
Shutter priority    
Aperture priority    
Manual mode    
Exposure compensation Yes Yes
Custom white balance    
Image stabilization    
Built-in flash    
Flash range no built-in flash no built-in flash
Flash modes Auto, redeye, fill, off, redeye slow sync, slow sync, 2nd-curtain slow sync, manual no built-in flash
Hot shoe    
Auto exposure bracketing    
White balance bracketing    
Max flash synchronize 1/250 seconds -
Exposure
Multisegment exposure    
Average exposure    
Spot exposure    
Partial exposure    
AF area exposure    
Center weighted exposure    
Video features
Video resolutions 4096 x 2160 @ 24p / 237 Mbps, MOV, H.264, Linear PCM 3840 x 2160 @ 120p / 280 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 100p / 280 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 60p / 200 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 50p / 200 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 30p / 140 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 25p / 140 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 24p / 100 Mbps, XAVC S, MP4, H.265, Linear PCM 1920 x 1080 @ 120p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 100p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 60p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 50p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 25p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 24p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM
Max video resolution 4096x2160 3840x2160
Video file format MPEG-4, H.264 MPEG-4, XAVC S, XAVC HS, XAVC S-1, H.264, H.265
Mic support    
Headphone support    
Connectivity
Wireless Built-In Built-In
Bluetooth    
NFC    
HDMI    
USB USB 2.0 (480 Mbit/sec) USB 3.2 Gen 1 (5 GBit/sec)
GPS None None
Physical
Environmental sealing    
Water proof    
Dust proof    
Shock proof    
Crush proof    
Freeze proof    
Weight 414g (0.91 pounds) 699g (1.54 pounds)
Physical dimensions 125 x 85 x 50mm (4.9" x 3.3" x 2.0") 129 x 97 x 81mm (5.1" x 3.8" x 3.2")
DXO scores
DXO Overall score not tested 85
DXO Color Depth score not tested 23.6
DXO Dynamic range score not tested 13.3
DXO Low light score not tested 2993
Other
Battery life 310 images 600 images
Type of battery Battery Pack Battery Pack
Battery model BLS-50 NP-FZ100
Self timer Yes (2 or 10 secs, custom) Yes (2 or 10 sec; continuous (3 or 5 exposures))
Time lapse shooting   With downloadable app
Type of storage SD/SDHC/SDXC (UHS-II supported) Dual SD/CFexpress Type A slots
Card slots One Dual
Launch price $1,200 $3,499