Olympus OM-D E-M1 vs Sony Alpha A7S II

Olympus OM-D E-M1
Sony Alpha A7S II

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Reasons For

8 Reasons For
26% higher megapixel count Edit
The Olympus OM-D E-M1 is a 16.3MP digital camera. That's 4.1MP higher than the Sony Alpha A7S II (12.2MP). Read more

The resolution of the images a digital camera produces is measured in megapixels (MP). One megapixel is equal to 1 million pixels and is a result of the pixel width multiplied by the pixel height of the image. While a higher image resolution generally results in sharper images, only a relatively low megapixel count is required when printing the image at a small size or to display it on a computer screen.

A sensor with more megapixels will be able to capture more detailed photos and the image will appear sharper. Images with more megapixels can also be printed at a larger size.

27% more total megapixel count Edit
The Olympus OM-D E-M1 is a 16.8MP digital camera. That's 4.4MP more than the Sony Alpha A7S II (12.4MP).
800.00 auto focus points Edit
The Olympus OM-D E-M1 is an 800.00 auto focus point digital camera, whereas the Sony Alpha A7S II only has 169.00 auto focus points.
Longer maximum camera shutter speed Edit
Olympus OM-D E-M1 is 60s maximum shutter speed. That's 30s longer than the Sony Alpha A7S II (30s). Read more

The maximum time which the camera shutter is open when taking a photo.

Larger screen size Edit
The Olympus OM-D E-M1 is a 3" screen digital camera. That's 0.05" larger than the Sony Alpha A7S II (2.95"). Read more

The display diagonal is the size the size of the screen integrated in to the back of the camera. A larger display diagonal makes it easier to see if a shot has turned out as intended. Pocket cameras have smaller display diagonals as full size digital SLRs.

A larger display diagonal makes it easier to take photos and to see if a shot has turned out as intended.

A lot lighter Edit
The Olympus OM-D E-M1 has a weight of 443g, but the Sony Alpha A7S II is a 584g digital camera (141g heavier). Read more

The camera's weight will depend on the type and size of camera. Compact cameras are usually the lightest while digital SLRs will be heavier. Also consider the number and weight of lenses to take when using a SLR.

The lower the camera weight, the easier it will be to carry around and it will also reduce your hand luggage weight when flying.

Shorter Edit
Olympus OM-D E-M1 is 63.1mm tall. That's 32.6mm shorter than the Sony Alpha A7S II (95.7mm).
Cheaper by £1,023
The Olympus OM-D E-M1 costs £1,023.19 less than the Sony Alpha A7S II.
14 Reasons For
Bigger digital zoom Edit
The Sony Alpha A7S II has a digital zoom of 4x, but the Olympus OM-D E-M1 is only a unknownx digital zoom digital camera (4x smaller). Read more

The digital zoom of a camera is a measure of how much the camera can zoom in by cropping the image received by the camera's sensor. A digital zoom is not as good as an optical zoom as it will result in a reduction in image quality the further you zoom in. This is because fewer of the camera's pixels are being used to capture the image.

A digital zoom allows you to enlarge the subject but this can result in the image becoming blurry. A digital zoom can be used if an optical zoom is not available.

Bigger extra / smart zoom Edit
The Sony Alpha A7S II is a 2x extra / smart zoom digital camera. That's 2x bigger than the Olympus OM-D E-M1 (2x).
384,000 higher maximum ISO speed Edit
The Sony Alpha A7S II has a maximum ISO speed of 409,600, but the Olympus OM-D E-M1 is only a 25,600 maximum ISO speed digital camera (384,000 lower).
Three times smaller minimum ISO speed Edit
The Sony Alpha A7S II has a minimum ISO speed of 50, whereas the Olympus OM-D E-M1 is a 200 minimum ISO speed digital camera (150 bigger).
191,800 pixels higher display resolution Edit
The Sony Alpha A7S II has a display resolution of 1,228,800 pixels, whereas the Olympus OM-D E-M1 is only a 1,037,000 pixels display resolution digital camera (191,800 pixels lower).
0.5" larger viewfinder screen size Edit
The Sony Alpha A7S II has a viewfinder screen size of 0.5", whereas the Olympus OM-D E-M1 is only a unknown" viewfinder screen size digital camera (0.5" smaller).
Higher lens magnification ratio Edit
The Sony Alpha A7S II has a lens magnification ratio of 0.78x, but the Olympus OM-D E-M1 is only a unknownx lens magnification ratio digital camera (0.78x lower). Read more

The lens magnification ratio is the ratio between the true size of the object being photographed and the size of the object when projected on to the camera's sensor.

A higher lens magnification ratio is important for macro photography as it allows you to focus on very small object very close to the lens.

Bigger eye relief Edit
Sony Alpha A7S II is 23mm Eye relief. That's 2mm bigger than the Olympus OM-D E-M1 (23mm). Read more

Eye relief (also known as eye point) refers to how far away from the eye piece your eye can be and you can still see the full frame of the image that will be taken.

A larger eye relief distance is useful for people who wear glasses, meaning that they can't put their eye directly on the eye piece.

Vastly thinner Edit
The Sony Alpha A7S II has a depth of 60.3mm, however the Olympus OM-D E-M1 is a 93.5mm deep digital camera (33.2mm thicker).
3.5mm narrower Edit
The Sony Alpha A7S II has a width of 126.9mm, however the Olympus OM-D E-M1 is a 130.4mm wide digital camera (3.5mm wider).
1h longer maximum battery life Edit
The Sony Alpha A7S II is a 1h battery life digital camera. That's 1h longer than the Olympus OM-D E-M1 (1h). Read more

The maximum battery life is the maximum length of time that the camera could run for if not excessively using the playback features.

A longer battery life allows you use the camera for more days before you need to change the battery or recharge it.

Fourty more shots per battery charge Edit
The Sony Alpha A7S II is a digital camera that takes 370.00 shots per battery charge, whereas the Olympus OM-D E-M1 only takes 330.00 shots per battery charge. Read more

The number of shots per battery charge is the number of photos that the camera will typically take on a single charge of the battery.

More shots per battery charge means you will have to recharge the battery less frequently and reduces the need to carry a second back up battery.

Available from 13 shops
The more retailers stock this digital camera, the greater competition amongst retailers to keep prices low.
More popular
The Sony Alpha A7S II is a more popular choice amongst buyers. It ranks No. 23777 by sales volume in our digital cameras, but the Olympus OM-D E-M1 ranks No. 66042.

Reasons Against

10 Reasons Against
15x lower maximum ISO speed Edit
The Olympus OM-D E-M1 is a 25,600 maximum ISO speed digital camera. That's 384,000 lower than the Sony Alpha A7S II (409,600).
75% bigger minimum ISO speed Edit
The Olympus OM-D E-M1 is a 200 minimum ISO speed digital camera. That's 150 bigger than the Sony Alpha A7S II (50).
Lower display resolution Edit
The Olympus OM-D E-M1 is a 1,037,000 pixels display resolution digital camera. That's 191,800 pixels lower than the Sony Alpha A7S II (1,228,800 pixels).
2mm smaller eye relief Edit
The Olympus OM-D E-M1 has an eye relief of 21mm, however the Sony Alpha A7S II is a 23mm Eye relief digital camera (2mm bigger). Read more

Eye relief (also known as eye point) refers to how far away from the eye piece your eye can be and you can still see the full frame of the image that will be taken.

A larger eye relief distance is useful for people who wear glasses, meaning that they can't put their eye directly on the eye piece.

Thicker Edit
The Olympus OM-D E-M1 is a 93.5mm deep digital camera. That's 33.2mm thicker than the Sony Alpha A7S II (60.3mm).
3% wider Edit
The Olympus OM-D E-M1 is a 130.4mm wide digital camera. That's 3.5mm wider than the Sony Alpha A7S II (126.9mm).
Only 330.00 shots per battery charge Edit
The number of shots per battery charge on the Olympus OM-D E-M1 is 330.00, but the Sony Alpha A7S II only takes 370.00 shots per battery charge. Read more

The number of shots per battery charge is the number of photos that the camera will typically take on a single charge of the battery.

More shots per battery charge means you will have to recharge the battery less frequently and reduces the need to carry a second back up battery.

Less retailers
The Olympus OM-D E-M1 is only stocked by 16 stores, whereas the Sony Alpha A7S II is stocked by 29 stores. Read more
Fewer numbers of sellers reduces the price competition amongst retailers for the product and also reduces the chances of this digital camera remaining in stock.
Older by over two years
The Olympus OM-D E-M1 is two years older than the Sony Alpha A7S II.
Less popular
The Olympus OM-D E-M1 is a less popular choice amongst buyers. It ranks No. 66042 by number of sales in our digital cameras, however the Sony Alpha A7S II ranks No. 23777.
8 Reasons Against
4.1MP lower megapixel count Edit
The Sony Alpha A7S II has a megapixel count of 12.2MP, however the Olympus OM-D E-M1 is a 16.3MP digital camera (4.1MP higher). Read more

The resolution of the images a digital camera produces is measured in megapixels (MP). One megapixel is equal to 1 million pixels and is a result of the pixel width multiplied by the pixel height of the image. While a higher image resolution generally results in sharper images, only a relatively low megapixel count is required when printing the image at a small size or to display it on a computer screen.

A sensor with more megapixels will be able to capture more detailed photos and the image will appear sharper. Images with more megapixels can also be printed at a larger size.

4.4MP less total megapixel count Edit
The Sony Alpha A7S II has a total megapixel count of 12.4MP, whereas the Olympus OM-D E-M1 is a 16.8MP digital camera (4.4MP more).
Six hundred and thirty-one less auto focus points Edit
The Sony Alpha A7S II has 169.00 auto focus points, however the Olympus OM-D E-M1 only has 800.00 auto focus points.
30s shorter maximum camera shutter speed Edit
The Sony Alpha A7S II is a 30s maximum shutter speed digital camera, whereas the Olympus OM-D E-M1 is a 60s maximum shutter speed digital camera (30s longer). Read more

The maximum time which the camera shutter is open when taking a photo.

A little smaller screen size Edit
The Sony Alpha A7S II has a screen size of 2.95", however the Olympus OM-D E-M1 is a 3" screen digital camera (0.05" larger). Read more

The display diagonal is the size the size of the screen integrated in to the back of the camera. A larger display diagonal makes it easier to see if a shot has turned out as intended. Pocket cameras have smaller display diagonals as full size digital SLRs.

A larger display diagonal makes it easier to take photos and to see if a shot has turned out as intended.

141g heavier Edit
The Sony Alpha A7S II is a 584g digital camera. That's 141g heavier than the Olympus OM-D E-M1 (584g). Read more

The camera's weight will depend on the type and size of camera. Compact cameras are usually the lightest while digital SLRs will be heavier. Also consider the number and weight of lenses to take when using a SLR.

The lower the camera weight, the easier it will be to carry around and it will also reduce your hand luggage weight when flying.

A lot taller Edit
The Sony Alpha A7S II is a 95.7mm tall digital camera, whereas the Olympus OM-D E-M1 is a 63.1mm tall digital camera (32.6mm shorter).
£1,023 more expensive
The Sony Alpha A7S II is more expensive than the Olympus OM-D E-M1 by £1,023.19.

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Date Released

38 months Ago 15 months Ago

Picture Quality

Camera Type
 MILC
 MILC
Megapixel Count
16.3MP
BEST
12.2MP
Image Stabiliser
 Image stabiliser
 Image stabiliser
Sensor Type
 CMOS
 CMOS
BEST
Still Image Resolution
 4608 x 3456
 2560 x 1920
 1024 x 768
 4240 x 2832
BEST
 4608 x 3456
 2560 x 1920
 1024 x 768
 4240 x 2832
Maximum Image Resolution
 4608 x 3456
BEST
 4608 x 3456
Image Format
 RAW
 JPG
 RAW
 JPG
Full-Frame Sensor Size
17.3 x 13 35.6 x 23.8
Total Megapixel Count
16.8MP
BEST
12.4MP
Image Stabilizer
 Body
 Body
Sensor Format
 Full-frame
 Full-frame
Aspect Ratio
 16:9
 4:3
 3:2
 3:4
 16:9
 4:3
 3:2
 3:4
Image Sensor Size
 4/3
BEST
 4/3

Design

Colour
 Black
 Black

Lens System

Digital Zoom
Unknown - Click to provide data 4x
Extra / Smart Zoom
Unknown - Click to provide data 2x
Lens Mount Interface
 Sony E
 Sony E

Focusing

Auto Focus
 single
 continuous
 tracking
 Single Auto Focus
 Continuous Auto Focus
 Tracking Auto Focus
 contrast detection
 Face detection
 Contrast Detection Auto Focus
 single
 continuous
 tracking
 Single Auto Focus
 Continuous Auto Focus
 Tracking Auto Focus
 contrast detection
 Face detection
 Contrast Detection Auto Focus
Auto Focus Lock
 Auto focus lock
 Auto focus lock
Auto Focus Assist Beam
Unknown - Click to provide data
 Auto focus assist beam
Auto Focus Point
800
BEST
169
Focus
 Auto
 Manual
 Auto/Manual
 Auto
 Manual
 Auto/Manual
Focus Mode
 TTL
 TTL

Light Exposure

Light Exposure Mode
 shutter priority
 aperture priority
 Shutter priority AE
 Aperture priority AE
 Auto
 shutter priority
 aperture priority
 Shutter priority AE
 Aperture priority AE
 Auto
ISO Speed
 160
 200
 1600
 25600
 25
 50
 80
 100
 400
 800
 12800
 409600
 102400
 160
 200
 1600
 25600
 25
 50
 80
 100
 400
 800
 12800
 409600
 102400
Maximum ISO Speed
25,600 409,600
BEST
Minimum ISO Speed
200 50
BEST
Auto Exposure Lock
Unknown - Click to provide data
 Auto exposure lock
Light Metering Mode
 Centre-weighted
 Spot
 Evaluative (Multi-pattern)
 Centre-weighted
 Spot
 Evaluative (Multi-pattern)
Light Exposure Correction
 ±5EV (1/2; 1/3 EV step)
 ±5EV (1/2; 1/3 EV step)
Light Exposure Control
 Program AE
 Program AE

Shutter

Maximum Camera Shutter Speed
60s
BEST
30s
Minimum Camera Shutter Speed
1s 1s
Camera Shutter
 Electronic
 Electronic

Flash

Flash Mode
 Red-eye reduction
 Slow synchronization
 Auto
 Manual
 Fill-in
 Flash off
 Second curtain synchro
 Red-eye reduction
 Slow synchronization
 Auto
 Manual
 Fill-in
 Flash off
 Second curtain synchro
Flash Guide
10m Unknown - Click to provide data
Flash Sync-Speed
1s 1s
External Flash Connector
Unknown - Click to provide data
 External flash connector
Flash Exposure Compensation
 Flash exposure compensation
 Flash exposure compensation
Flash Exposure Correction
 ±3EV (1/2; 1/3 EV step)
 ±3EV (1/2; 1/3 EV step)
BEST
Shoe Mounting Point
Unknown - Click to provide data
 Shoe mounting point

Video

Full HD Video
Unknown - Click to provide data
 Full HD video
Maximum Video Resolution
 3840 x 2160
 3840 x 2160
BEST
JPEG Frame Rate
30fps Unknown - Click to provide data
Video Format
 AVI
 MOV
 AVCHD
 AVC
 MP4
 MPEG
 MPEG4
 H.264
 XAVC-I
 AVI
 MOV
 AVCHD
 AVC
 MP4
 MPEG
 MPEG4
 H.264
 XAVC-I
Analog Signal Format
 PAL
 NTSC
 PAL
 NTSC
Video Resolution
 1920 x 1080
 1280 x 720
 640 x 480
 3840 x 2160
 1920 x 1080
 1280 x 720
 640 x 480
 3840 x 2160
BEST
Resolution and Capture Speed
 1920x1080@120fps
 3840x2160@25fps
 3840x2160@24fps
 3840x2160@30fps
 1920x1080@60fps
 1920x1080@50fps
 1920x1080@30fps
 1920x1080@25fps
 1920x1080@120fps
 3840x2160@25fps
 3840x2160@24fps
 3840x2160@30fps
 1920x1080@60fps
 1920x1080@50fps
 1920x1080@30fps
 1920x1080@25fps
BEST
Video Recording
 Video recording
 Video recording
HD Type
 Full HD
 4K Ultra HD
 Full HD
 4K Ultra HD

Audio

Built-In Microphone
 Built-in microphone
 Built-in microphone
Audio Format
 LPCM
 AC3
 PCM
 LC-AAC
 AAC++
 LPCM
 AC3
 PCM
 LC-AAC
 AAC++
BEST
Voice Recording
 Voice recording
 Voice recording
Noise Reduction
 Noise reduction
Unknown - Click to provide data

Memory

Memory Card
 SDXC
 SDHC
 SD
 MS PRO
 MS Micro (M2)
 MS Duo
 MS PRO Duo
 MS Pro-HG
 MS Pro-HG Duo
 SDXC
 SDHC
 SD
 MS PRO
 MS Micro (M2)
 MS Duo
 MS PRO Duo
 MS Pro-HG
 MS Pro-HG Duo
Memory Slot
1 1

Display

Screen Size
3"
BEST
2.95"
Display
 LCD
 LCD
Vari-Angle LCD Display
 Vari-angle LCD display
 Vari-angle LCD display
Touch Sensitive Screen
 Touch sensitive screen
Unknown - Click to provide data
Display Resolution
1,037,000 pixels 1,228,800 pixels
BEST

Viewfinder

Viewfinder Screen Size
Unknown - Click to provide data 0.5"
Lens Magnification Ratio
Unknown - Click to provide data 0.78x
Viewfinder
 Electronic
 Electronic

Ports & Interfaces

HDMI Port
 HDMI port
 HDMI port
Microphone in Socket
Unknown - Click to provide data
 Microphone in socket
HDMI Connector
 Micro
 Micro
USB Version
 2.0
 2.0
Headphone Out Port
Unknown - Click to provide data
 Headphone out port
USB Connector
 Micro-USB
 Micro-USB

Camera

White Balance Mode
 Tungsten
 Fluorescent
 Shade
 Flash
 Underwater
 Sunny
 Auto
 Cloudy
 Daylight
 Incandescent
 Custom modes
 Tungsten
 Fluorescent
 Shade
 Flash
 Underwater
 Sunny
 Auto
 Cloudy
 Daylight
 Incandescent
 Custom modes
Shooting Mode
 Auto
 Shutter priority
 Aperture priority
 Manual
 Program
 Auto
 Shutter priority
 Aperture priority
 Manual
 Program
Photo Effect
 Art
 Muted
 Vivid
 Black&White
 Neutral
 Sepia
 Art
 Muted
 Vivid
 Black&White
 Neutral
 Sepia
Self-Timer
2,12 2,5,10
Histogram
 Histogram
 Histogram
Dioptre Correction
Unknown - Click to provide data
 Dioptre correction
Anti-Dust Function
Unknown - Click to provide data
 Anti-dust function
Camera File System
 Exif 2.2
 DCF
 DPOF
 PRINT Image Matching III
 Exif
 DCF 2.0
 Exif 2.3
 RAW
 MPF
 Exif 2.2
 DCF
 DPOF
 PRINT Image Matching III
 Exif
 DCF 2.0
 Exif 2.3
 RAW
 MPF
Live View
 Live view
Unknown - Click to provide data
Playback Mode
 Highlights
 Single image
 Slide show
 Thumbnails
 Highlights
 Single image
 Slide show
 Thumbnails
Saturation Adjustment
 Saturation adjustment
 Saturation adjustment
Contrast Adjustment
Unknown - Click to provide data
 Contrast adjustment
Built-In Processor
TruePic VII BIONZ X
Diopter Adjustment
4 - 2 -4 - 3
Eye Relief
21mm 23mm
BEST
Scene Mode
 Beach
 Snow
 Candlelight
 Children
 Fireworks
 Landscape
 Night
 Panorama
 Portrait
 Sports
 Sunrise
 Night portrait
 Sunset
 Twilight
 Beach
 Snow
 Candlelight
 Children
 Fireworks
 Landscape
 Night
 Panorama
 Portrait
 Sports
 Sunrise
 Night portrait
 Sunset
 Twilight

Weight & Dimensions

Weight
443g
BEST
584g
Height
63.1mm
BEST
95.7mm
Depth
93.5mm 60.3mm
BEST
Width
130.4mm 126.9mm
BEST
Weight Including Battery
497g
BEST
627g

Battery

Power Source
 Battery
 Battery
Battery
 Lithium-Ion (Li-Ion)
BEST
 Lithium-Ion (Li-Ion)
Battery Size
Unknown - Click to provide data NP-FW50
Maximum Battery Life
Unknown - Click to provide data 1h
Shot Per Battery Charge
330 shots 370 shots
BEST

Operational Conditions

Relative Humidity Storage Range
10 - 90 Unknown - Click to provide data
Relative Humidity Operating Range
30 - 90 Unknown - Click to provide data
Storage Temperature Range
-20 - 60 Unknown - Click to provide data
Operating Temperature Range
-10 - 40 0 - 40

Packaging Content

AC Adapter Included
Unknown - Click to provide data
 AC adapter included
Included Cable
 USB
 Micro-USB
 USB
 Micro-USB
Battery Included
 Battery included
 Battery included
Included Battery Charger
 Included battery charger
 Included battery charger
Hand Strap
Unknown - Click to provide data
 Hand strap
Quick Start Guide
 Quick start guide
Unknown - Click to provide data

Networking

WiFi Connectivity
 WiFi connectivity
 WiFi connectivity
Near Field Communication
Unknown - Click to provide data
 Near field communication
Bluetooth
 Bluetooth
Unknown - Click to provide data

Other Features

USB Connectivity
 USB connectivity
Unknown - Click to provide data

Technical Details

Built-In Speaker
Unknown - Click to provide data
 Built-in speaker
Self-Timer
 Self-timer
 Self-timer
Memory Function
Unknown - Click to provide data
 Memory function
Video Capture Resolution (max)
Unknown - Click to provide data 3840 x 2160
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