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Olympus E-M5 II vs Sony A7S

Portability
80 Imaging
53 Features
84 Overall
65
Olympus OM-D E-M5 II front
 
Sony Alpha A7S front
Portability
77 Imaging
60 Features
73 Overall
65

Olympus E-M5 II vs Sony A7S Key Specs

Olympus E-M5 II
(Full Review)
  • 16MP - Four Thirds Sensor
  • 3" Fully Articulated Display
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Maximum Shutter
  • 1920 x 1080 video
  • Micro Four Thirds Mount
  • 469g - 124 x 85 x 45mm
  • Revealed February 2015
  • Succeeded the Olympus E-M5
  • Newer Model is Olympus E-M5 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
  • Revealed April 2014
  • Newer Model is Sony A7S II
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Olympus E-M5 II vs Sony A7S Overview

Here, we are contrasting the Olympus E-M5 II versus Sony A7S, former being a Advanced Mirrorless while the other is a Pro Mirrorless by competitors Olympus and Sony. There is a substantial difference among the resolutions of the E-M5 II (16MP) and A7S (12MP) and the E-M5 II (Four Thirds) and A7S (Full frame) offer different sensor sizes.

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The E-M5 II was introduced 11 months later than the A7S and they are both of a similar age. Both the cameras feature the same body design (SLR-style mirrorless).

Before getting into a full comparison, here is a quick introduction of how the E-M5 II grades against the A7S with regard to portability, imaging, features and an overall rating.

Photography Glossary 

				

					

						
Reasons to pick Olympus E-M5 II over the Sony A7S

					

					

						
 E-M5 II A7S 
RevealedFebruary 2015April 2014Fresher by 11 months
Display typeFully ArticulatedTiltingFully Articulating display
Selfie screen  Take selfies
Touch friendly display  Easily navigate
					

				


				

					

						
Reasons to pick Sony A7S over the Olympus E-M5 II

					

					

						
 A7S E-M5 II 
Display resolution1230k1037kSharper display (+193k dot)
					

				


				

					

						
Common features in the Olympus E-M5 II and Sony A7S

					

					

						
 E-M5 II A7S 
Manual focus  Very precise focus
Display size3"3"Same display dimensions
					

				

				

	
	
	
	

				

					

						
Olympus E-M5 II vs Sony A7S Physical Comparison

					

					

						
If you are planning to carry your camera, you are going to need to consider its weight and proportions. The Olympus E-M5 II features physical dimensions of 124mm x 85mm x 45mm (4.9" x 3.3" x 1.8") having a weight of 469 grams (1.03 lbs) whilst the Sony A7S has measurements of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") with a weight of 489 grams (1.08 lbs).
See the Olympus E-M5 II versus Sony A7S in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses
Keep in mind, the weight of an ILC will vary based on the lens you are utilising at that moment. Below is a front view dimension comparison of the E-M5 II versus the A7S.
Olympus E-M5 II vs Sony A7S size comparison
Considering size and weight, the portability grade of the E-M5 II and A7S is 80 and 77 respectively.
Olympus E-M5 II vs Sony A7S top view buttons comparison					

				


				

					

						
Olympus E-M5 II vs Sony A7S Sensor Comparison

					

					

						
Usually, it is tough to visualize the difference in sensor sizing only by seeing a spec sheet. The photograph underneath will offer you a stronger sense of the sensor dimensions in the E-M5 II and A7S.
Clearly, the 2 cameras feature different resolutions and different sensor sizing. The E-M5 II using its smaller sensor is going to make getting bokeh trickier and the Olympus E-M5 II will provide greater detail using its extra 4 Megapixels. Greater resolution can also help you crop images way more aggressively. The more recent E-M5 II provides an edge when it comes to sensor innovation.

						Olympus E-M5 II vs Sony A7S sensor size comparison
					

				


				

					

						
Olympus E-M5 II vs Sony A7S Screen and ViewFinder

					

					

											

					Olympus E-M5 II vs Sony A7S Screen and Viewfinder comparison				


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Photography Type Scores

					

				

				
Portrait Comparison
Portrait photography with Olympus E-M5 II
Portrait photography with Sony A7S
71
 has manual focus
 megapixel count decent (16MP)
 sensor size is nice (Four Thirds)
 features face detection focus
 saves RAW formats
68
 has manual focus
 sensor size is big (Full frame)
 supports face detect focus
 supports RAW files
 low megapixels (12MP)
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Street Comparison
Olympus E-M5 II Street photography features
Sony A7S Street photography features
82
 screen articulates fully
 image stabilization (Sensor based 5-axis)
 sensor size is nice (Four Thirds)
 saves RAW formats
 comes with focus via touch
 environment proof
 great high ISO (25,600)
76
 tilting screen
 sensor size is big (Full frame)
 supports RAW files
 weather proof
 lighter than competition in class (489 grams)
 above average high ISO (409,600)
 no image stabilization
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Sports Comparison
Olympus E-M5 II Sports photography information
Sony A7S Sports photography information
65
 high shutter speed (1/8,000 seconds)
 silent mode (1/16,000 seconds)
 image stabilization (Sensor based 5-axis)
 megapixel count decent (16MP)
 sensor size is nice (Four Thirds)
 features tracking autofocus
 environment proof
 bad battery (310 CIPA)
 doesn't have phase detect auto focus
52
 max shutter speed is good (1/8,000 seconds)
 sensor size is big (Full frame)
 supports tracking focus
 weather proof
 very slow continuous shooting (5.0 frames/s)
 no image stabilization
 low megapixels (12MP)
 bad battery pack (360 CIPA)
 lack of phase detect auto focus
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Travel Comparison
 Olympus E-M5 II as a Travel photography camera
 Sony A7S as a Travel photography camera
74
 environment proof
 comes with focus via touch
 megapixel count decent (16MP)
 selfie friendly screen
 bad battery (310 per charge)
58
 lighter than competition in class (489g)
 weather proof
 bad battery pack (360 shots)
 low megapixels (12MP)
 display isn't selfie friendly
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Landscape Comparison
Olympus E-M5 II Landscape photography advice
Sony A7S Landscape photography advice
74
 has manual focus
 swap lenses (Micro Four Thirds mount)
 decent sized screen (3 inch)
 image stabilization (Sensor based 5-axis)
 megapixel count decent (16MP)
 sensor size is nice (Four Thirds)
 great high ISO (25,600)
 saves RAW formats
 environment proof
 bad battery (310 CIPA)
66
 has manual focus
 switch lenses (Sony E mount)
 nice screen size (3")
 sensor size is big (Full frame)
 above average high ISO (409,600)
 supports RAW files
 weather proof
 no image stabilization
 low megapixels (12 megapixels)
 bad battery pack (360 per charge)
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Vlogging Comparison
Olympus E-M5 II Vlogging details
Sony A7S Vlogging details
82
 selfie friendly screen
 has touchscreen
 image stabilization (Sensor based 5-axis)
 features face detection focus
 video res high (1920 x 1080 pixels)
 does have external mic support
34
 supports face detect focus
 video resolution high (3840 x 2160 pixels)
 does have microphone socket
 lighter than competition in class (489g)
 display isn't selfie friendly
 no image stabilization
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Olympus E-M5 II vs Sony A7S Specifications

					

					

											


					

						Detailed spec comparison table for Olympus E-M5 II and Sony A7S
 Olympus OM-D E-M5 IISony Alpha A7S
General Information
Brand Name Olympus Sony
Model Olympus OM-D E-M5 II Sony Alpha A7S
Class Advanced Mirrorless Pro Mirrorless
Revealed 2015-02-06 2014-04-06
Physical type SLR-style mirrorless SLR-style mirrorless
Sensor Information
Processor Chip TruePic VII Bionz X
Sensor type MOS CMOS
Sensor size Four Thirds Full frame
Sensor measurements 17.3 x 13mm 35.8 x 23.9mm
Sensor area 224.9mm² 855.6mm²
Sensor resolution 16 megapixel 12 megapixel
Anti aliasing filter    
Aspect ratio 1:1, 4:3, 3:2 and  16:9 3:2 and  16:9
Max resolution 4608 x 3456 4240 x 2832
Max native ISO 25600 409600
Lowest native ISO 200 100
RAW files    
Lowest enhanced ISO 100 -
Autofocusing
Manual focus    
Touch to focus    
Continuous AF    
Single AF    
Tracking AF    
Selective AF    
AF center weighted    
AF multi area    
AF live view    
Face detect focusing    
Contract detect focusing    
Phase detect focusing    
Number of focus points 81 25
Lens
Lens mounting type Micro Four Thirds Sony E
Total lenses 107 121
Crop factor 2.1 1
Screen
Type of display Fully Articulated Tilting
Display diagonal 3" 3"
Resolution of display 1,037k dots 1,230k dots
Selfie friendly    
Liveview    
Touch capability    
Viewfinder Information
Viewfinder type Electronic Electronic
Viewfinder resolution 2,360k dots 2,359k dots
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.74x 0.71x
Features
Min shutter speed 60 secs 30 secs
Max shutter speed 1/8000 secs 1/8000 secs
Max quiet shutter speed 1/16000 secs -
Continuous shutter rate 10.0 frames per second 5.0 frames per second
Shutter priority    
Aperture priority    
Manually set exposure    
Exposure compensation Yes Yes
Custom WB    
Image stabilization    
Integrated 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
External flash    
Auto exposure bracketing    
White balance bracketing    
Max flash synchronize 1/250 secs -
Exposure
Multisegment exposure    
Average exposure    
Spot exposure    
Partial exposure    
AF area exposure    
Center weighted exposure    
Video features
Supported video resolutions 1920 x 1080 (60p, 50p, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p, 24p), 640 x 480 (30p) 3840 x 2160, XAVC S 1080 60p(50Mbps), 30p (50Mbps), 24p (50Mbps). 720 120p (50Mbps). AVCHD 60p (28Mbps), 60i (24Mbps/17Mbps), 24p (24Mbps/17Mbps)
Max video resolution 1920x1080 3840x2160
Video format MPEG-4, H.264, Motion JPEG MPEG-4, AVCHD, XAVC
Microphone port    
Headphone port    
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
Environment sealing    
Water proof    
Dust proof    
Shock proof    
Crush proof    
Freeze proof    
Weight 469 grams (1.03 lb) 489 grams (1.08 lb)
Physical dimensions 124 x 85 x 45mm (4.9" x 3.3" x 1.8") 127 x 94 x 48mm (5.0" x 3.7" x 1.9")
DXO scores
DXO Overall score 73 87
DXO Color Depth score 23.0 23.9
DXO Dynamic range score 12.4 13.2
DXO Low light score 896 3702
Other
Battery life 310 pictures 360 pictures
Form of battery Battery Pack Battery Pack
Battery model BLN-1 NP-FW50
Self timer Yes (2 or 10 secs, custom) Yes (2 or 10 sec; continuous (3 or 5 exposures))
Time lapse feature   With downloadable app
Storage type SD/SDHC/SDXC SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
Card slots One One
Retail price $699 $1,998