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Olympus E-M5 II vs Sony A7S

Portability
80
Imaging
54
Features
84
Overall
66
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.

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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
72
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