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Olympus E-M10 IV vs Sony A7S

Portability
81 Imaging
63 Features
83 Overall
71
Olympus OM-D E-M10 IV front
 
Sony Alpha A7S front
Portability
77 Imaging
60 Features
73 Overall
65

Olympus E-M10 IV vs Sony A7S Key Specs

Olympus E-M10 IV
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Tilting Display
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • 3840 x 2160 video
  • Micro Four Thirds Mount
  • 383g - 122 x 84 x 49mm
  • Introduced August 2020
  • Superseded the Olympus E-M10 III
Sony A7S
(Full Review)
  • 12MP - Full frame Sensor
  • 3" Tilting Display
  • ISO 100 - 409600
  • 1/8000s Maximum Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 489g - 127 x 94 x 48mm
  • Announced April 2014
  • Refreshed by Sony A7S II
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Olympus E-M10 IV vs Sony A7S Overview

The following is a extensive assessment of the Olympus E-M10 IV and Sony A7S, former is a Entry-Level Mirrorless while the other is a Pro Mirrorless by manufacturers Olympus and Sony. There is a large difference among the image resolutions of the E-M10 IV (20MP) and A7S (12MP) and the E-M10 IV (Four Thirds) and A7S (Full frame) feature different sensor sizing.

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The E-M10 IV was released 6 years after the A7S which is a fairly serious difference as far as camera tech is concerned. Both of these cameras come with the identical body type (SLR-style mirrorless).

Before delving in to a thorough comparison, below is a concise highlight of how the E-M10 IV matches up versus the A7S when considering portability, imaging, features and an overall mark.

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Reasons to pick Olympus E-M10 IV over the Sony A7S

		

		

			
 E-M10 IV A7S 
AnnouncedAugust 2020April 2014Newer by 78 months
Selfie screen  Easy selfies
Touch display  Easily navigate
		

	

	
	

		

		
Reasons to pick Sony A7S over the Olympus E-M10 IV

		

		

			
 A7S E-M10 IV 
Display resolution1230k1040kClearer display (+190k dot)
		

	

	
	

		

		
Common features in the Olympus E-M10 IV and Sony A7S

		

		

			
 E-M10 IV A7S 
Manually focus  Very accurate focusing
Display typeTiltingTiltingTilting display
Display dimension3"3"Identical display measurement
		

	

	

	
	
	
	

	

		

		
Olympus E-M10 IV vs Sony A7S Physical Comparison

		

		

			
For those who are going to travel with your camera regularly, you have to factor its weight and dimensions. The Olympus E-M10 IV comes with external measurements of 122mm x 84mm x 49mm (4.8" x 3.3" x 1.9") and a weight of 383 grams (0.84 lbs) whilst the Sony A7S has dimensions of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") having a weight of 489 grams (1.08 lbs).
Contrast the Olympus E-M10 IV and Sony A7S in our newest Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses
Remember that, the weight of an ILC will differ based on the lens you use at that moment. The following is the front view size comparison of the E-M10 IV compared to the A7S.
Olympus E-M10 IV vs Sony A7S size comparison
Considering size and weight, the portability score of the E-M10 IV and A7S is 81 and 77 respectively.
Olympus E-M10 IV vs Sony A7S top view buttons comparison		

	

	
	

		

		
Olympus E-M10 IV vs Sony A7S Sensor Comparison

		

		

			
In many cases, it's hard to imagine the difference in sensor dimensions purely by checking out specifications. The picture here might provide you a much better sense of the sensor sizing in the E-M10 IV and A7S.
Plainly, both the cameras posses different megapixel count and different sensor dimensions. The E-M10 IV because of its smaller sensor is going to make getting shallower DOF more difficult and the Olympus E-M10 IV will show more detail as a result of its extra 8 Megapixels. Greater resolution can also make it easier to crop images somewhat more aggressively. The more recent E-M10 IV should have an edge with regard to sensor technology.
	
			Olympus E-M10 IV vs Sony A7S sensor size comparison			
		

	

	
	

		

		
Olympus E-M10 IV vs Sony A7S Screen and ViewFinder

		

		

					

		Olympus E-M10 IV vs Sony A7S Screen and Viewfinder comparison	

	
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Photography Type Scores

		

	

	
Portrait Comparison
Olympus E-M10 IV Portrait photography features
Sony A7S Portrait photography features
77
 manual focus
 good MP (20 megapixels)
 sensor size is decent (Four Thirds)
 includes face detect focusing
 saves RAW files
68
 focusing manually
 sensor size is large (Full frame)
 includes face detect focus
 supports RAW files
 low megapixels (12MP)
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Street Comparison
Street photography with Olympus E-M10 IV
Street photography with Sony A7S
84
 screen tilts
 built in image stabilization (Sensor based 5-axis)
 sensor size is decent (Four Thirds)
 saves RAW files
 has focus via touch
 above average ISO range (25,600)
76
 tilting screen
 sensor size is large (Full frame)
 supports RAW files
 environment sealing
 lighter than competition in class (489 grams)
 good ISO range (409,600)
 lack of image stabilization
Photography Glossary
Sports Comparison
Olympus E-M10 IV Sports photography advice
Sony A7S Sports photography advice
73
 quiet mode (1/16,000 seconds)
 built in image stabilization (Sensor based 5-axis)
 good MP (20MP)
 sensor size is decent (Four Thirds)
 includes tracking focus
 has no phase detect AF
52
 max shutter speed is good (1/8,000 seconds)
 sensor size is large (Full frame)
 includes tracking focus
 environment sealing
 max fps very slow (5.0 frames/s)
 lack of image stabilization
 low megapixels (12 megapixels)
 not so great battery pack (360 per charge)
 does not have phase detect auto focus
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Travel Comparison
Travel photography with Olympus E-M10 IV
Travel photography with Sony A7S
85
 supports bluetooth
 has focus via touch
 good MP (20 megapixels)
 built-in flash
 display is selfie friendly
58
 lighter than competition in class (489g)
 environment sealing
 not so great battery pack (360 per charge)
 low megapixels (12 megapixels)
 does not have selfie friendly display
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Landscape Comparison
Olympus E-M10 IV Landscape photography features
Sony A7S Landscape photography features
83
 manual focus
 interchangeable lenses (Micro Four Thirds mount)
 nice screen size (3")
 built in image stabilization (Sensor based 5-axis)
 good MP (20 megapixels)
 sensor size is decent (Four Thirds)
 above average ISO range (25,600)
 saves RAW files
66
 focusing manually
 switch lenses (Sony E mount)
 nice screen size (3")
 sensor size is large (Full frame)
 good ISO range (409,600)
 supports RAW files
 environment sealing
 lack of image stabilization
 low megapixels (12 megapixels)
 not so great battery pack (360 shots)
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Vlogging Comparison
Olympus E-M10 IV Vlogging information
Sony A7S Vlogging information
78
 display is selfie friendly
 touchscreen capability
 built in image stabilization (Sensor based 5-axis)
 includes face detect focusing
 high video quality (3840 x 2160 pxls)
 lack of mic socket
34
 includes face detect focus
 video res high (3840 x 2160 pxls)
 has mic jack
 lighter than competition in class (489 grams)
 does not have selfie friendly display
 lack of image stabilization
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Olympus E-M10 IV vs Sony A7S Specifications

		

		

					

		
		

			Detailed spec comparison table for Olympus E-M10 IV and Sony A7S
 Olympus OM-D E-M10 IVSony Alpha A7S
General Information
Brand Olympus Sony
Model Olympus OM-D E-M10 IV Sony Alpha A7S
Category Entry-Level Mirrorless Pro Mirrorless
Introduced 2020-08-04 2014-04-06
Body design SLR-style mirrorless SLR-style mirrorless
Sensor Information
Processor TruePic VIII Bionz X
Sensor type CMOS CMOS
Sensor size Four Thirds Full frame
Sensor dimensions 17.4 x 13mm 35.8 x 23.9mm
Sensor surface area 226.2mm² 855.6mm²
Sensor resolution 20MP 12MP
Anti aliasing filter    
Aspect ratio 1:1, 4:3, 3:2 and  16:9 3:2 and  16:9
Highest Possible resolution 5184 x 3888 4240 x 2832
Maximum native ISO 25600 409600
Lowest native ISO 200 100
RAW support    
Lowest enhanced ISO 100 -
Autofocusing
Focus manually    
Touch to focus    
Continuous autofocus    
Single autofocus    
Autofocus tracking    
Selective autofocus    
Autofocus center weighted    
Autofocus multi area    
Autofocus live view    
Face detect autofocus    
Contract detect autofocus    
Phase detect autofocus    
Number of focus points 121 25
Lens
Lens mounting type Micro Four Thirds Sony E
Available lenses 107 121
Focal length multiplier 2.1 1
Screen
Range of display Tilting Tilting
Display sizing 3" 3"
Resolution of display 1,040 thousand dot 1,230 thousand dot
Selfie friendly    
Liveview    
Touch functionality    
Viewfinder Information
Viewfinder type Electronic Electronic
Viewfinder resolution 2,360 thousand dot 2,359 thousand dot
Viewfinder coverage 100% 100%
Viewfinder magnification 0.62x 0.71x
Features
Min shutter speed 60 seconds 30 seconds
Max shutter speed 1/4000 seconds 1/8000 seconds
Max quiet shutter speed 1/16000 seconds -
Continuous shutter speed 8.7 frames per second 5.0 frames per second
Shutter priority    
Aperture priority    
Manual exposure    
Exposure compensation Yes Yes
Set white balance    
Image stabilization    
Integrated flash    
Flash range 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    
AE bracketing    
WB bracketing    
Max flash sync 1/250 seconds -
Exposure
Multisegment metering    
Average metering    
Spot metering    
Partial metering    
AF area metering    
Center weighted metering    
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, XAVC S 1080 60p(50Mbps), 30p (50Mbps), 24p (50Mbps). 720 120p (50Mbps). AVCHD 60p (28Mbps), 60i (24Mbps/17Mbps), 24p (24Mbps/17Mbps)
Maximum video resolution 3840x2160 3840x2160
Video data format MPEG-4, H.264 MPEG-4, AVCHD, XAVC
Mic input    
Headphone input    
Connectivity
Wireless Built-In Built-In
Bluetooth    
NFC    
HDMI    
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental seal    
Water proof    
Dust proof    
Shock proof    
Crush proof    
Freeze proof    
Weight 383g (0.84 lb) 489g (1.08 lb)
Dimensions 122 x 84 x 49mm (4.8" x 3.3" x 1.9") 127 x 94 x 48mm (5.0" x 3.7" x 1.9")
DXO scores
DXO Overall score not tested 87
DXO Color Depth score not tested 23.9
DXO Dynamic range score not tested 13.2
DXO Low light score not tested 3702
Other
Battery life 360 pictures 360 pictures
Type of battery Battery Pack Battery Pack
Battery model BLS-50 NP-FW50
Self timer Yes (2 or 12 sec, custom) Yes (2 or 10 sec; continuous (3 or 5 exposures))
Time lapse recording   With downloadable app
Type of storage SD/SDHC/SDXC (UHS-II supported) SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
Storage slots Single Single
Price at release $699 $1,998