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Sony A7S II vs YI M1

Portability
68
Imaging
61
Features
76
Overall
67
Sony Alpha A7S II front
 
YI M1 front
Portability
87
Imaging
59
Features
66
Overall
61

Sony A7S II vs YI M1 Key Specs

Sony A7S II
(Full Review)
  • 12MP - Full frame Sensor
  • 3" Tilting Screen
  • ISO 100 - 102400 (Boost to 409600)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 627g - 127 x 96 x 60mm
  • Announced October 2015
  • Superseded the Sony A7S
  • Updated by Sony A7S III
YI M1
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Fixed Display
  • ISO 100 - 25600
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 350g - 114 x 64 x 34mm
  • Launched September 2016
Photography Glossary

Sony A7S II vs YI M1 Overview

Lets take a closer look at the Sony A7S II versus YI M1, one being a Pro Mirrorless and the other is a Entry-Level Mirrorless by brands Sony and YI. There exists a sizeable gap between the sensor resolutions of the A7S II (12MP) and M1 (20MP) and the A7S II (Full frame) and M1 (Four Thirds) offer totally different sensor dimensions.

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The A7S II was launched 11 months before the M1 which means that they are both of a similar generation. Both of these cameras feature different body design with the Sony A7S II being a SLR-style mirrorless camera and the YI M1 being a Rangefinder-style mirrorless camera.

Before getting into a step-by-step comparison, here is a quick overview of how the A7S II matches up against the M1 in relation to portability, imaging, features and an overall grade.

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Reasons to pick Sony A7S II over the YI M1

 A7S II M1 
Display typeTiltingFixed Tilting display
Display resolution1229k1040kCrisper display (+189k dot)

Reasons to pick YI M1 over the Sony A7S II

 M1 A7S II 
LaunchedSeptember 2016October 2015More recent by 11 months
Touch display Easily navigate

Common features in the Sony A7S II and YI M1

 A7S II M1 
Focus manually Dial precise focusing
Display size3"3"Same display sizing
Selfie screen Neither has selfie screen

Sony A7S II vs YI M1 Physical Comparison

In case you're aiming to lug around your camera, you will want to factor in its weight and volume. The Sony A7S II has physical measurements of 127mm x 96mm x 60mm (5.0" x 3.8" x 2.4") along with a weight of 627 grams (1.38 lbs) and the YI M1 has sizing of 114mm x 64mm x 34mm (4.5" x 2.5" x 1.3") with a weight of 350 grams (0.77 lbs).

Examine the Sony A7S II versus YI M1 in the latest Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an Interchangeable Lens Camera will change depending on the lens you are working with during that time. Below is a front view measurement comparison of the A7S II compared to the M1.

Sony A7S II vs YI M1 size comparison

Considering dimensions and weight, the portability rating of the A7S II and M1 is 68 and 87 respectively.

Sony A7S II vs YI M1 top view buttons comparison

Sony A7S II vs YI M1 Sensor Comparison

Quite often, it is very hard to see the difference between sensor measurements purely by reading through specifications. The graphic here might provide you a better sense of the sensor measurements in the A7S II and M1.

Plainly, each of the cameras feature different resolutions and different sensor measurements. The A7S II because of its larger sensor will make shooting shallow depth of field easier and the YI M1 will resolve extra detail utilizing its extra 8MP. Greater resolution can also help you crop pics way more aggressively. The older A7S II is going to be disadvantaged when it comes to sensor innovation.

Sony A7S II vs YI M1 sensor size comparison

Sony A7S II vs YI M1 Screen and ViewFinder

Sony A7S II vs YI M1 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Sony A7S II Portrait photography features
YI M1 Portrait photography features
68
manual focus
sensor size is large (Full frame)
comes with face detect focus
exports RAW files
sensor resolution low (12 megapixels)
75
manual focus
decent MP (20MP)
sensor size is decent (Four Thirds)
offers face detect focusing
exports RAW formats
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Street Comparison

Sony A7S II Street photography information
YI M1 Street photography information
78
screen tilts up and down
has image stabilization (Sensor based 5-axis)
sensor size is large (Full frame)
exports RAW files
environment proof
good high ISO (102,400)
73
sensor size is decent (Four Thirds)
exports RAW formats
offers touch to focus
above average ISO range (25,600)
fixed screen
lack of image stabilization
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Sports Comparison

Sports photography with Sony A7S II
Sports photography with YI M1
58
high shutter speed (1/8,000s)
has image stabilization (Sensor based 5-axis)
sensor size is large (Full frame)
comes with tracking focus
environment proof
painfully slow continuous shooting (5.0 frames/s)
sensor resolution low (12 megapixels)
terrible battery power (370 per charge)
does not have phase detect auto focus
54
decent MP (20MP)
sensor size is decent (Four Thirds)
great battery power (450 per charge)
max frames per second very slow (5.0 frames/s)
lack of image stabilization
lacks phase detect AF
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Travel Comparison

Sony A7S II as a Travel photography camera
YI M1 as a Travel photography camera
49
environment proof
terrible battery power (370 CIPA)
sensor resolution low (12MP)
doesn't feature selfie friendly screen
78
great battery power (450 CIPA)
connects via bluetooth
offers touch to focus
decent MP (20MP)
screen is not selfie friendly
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Landscape Comparison

Sony A7S II Landscape photography info
YI M1 Landscape photography info
71
manual focus
change lenses (Sony E mount)
decent sized screen (3 inch)
has image stabilization (Sensor based 5-axis)
sensor size is large (Full frame)
good high ISO (102,400)
exports RAW files
environment proof
sensor resolution low (12 megapixels)
terrible battery power (370 CIPA)
76
manual focus
change lenses (Micro Four Thirds mount)
pretty good screen size (3 inches)
decent MP (20MP)
sensor size is decent (Four Thirds)
above average ISO range (25,600)
exports RAW formats
great battery power (450 shots)
lack of image stabilization
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Vlogging Comparison

Sony A7S II Vlogging features
YI M1 Vlogging features
35
has image stabilization (Sensor based 5-axis)
comes with face detect focus
video res high (3840 x 2160 pxls)
does have microphone jack
doesn't feature selfie friendly screen
33
built-in touchscreen
offers face detect focusing
high res video (4096 x 2160 resolution)
screen is not selfie friendly
lack of image stabilization
lack of mic socket
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Sony A7S II vs YI M1 Specifications

Detailed spec comparison table for Sony A7S II and YI M1
 Sony Alpha A7S IIYI M1
General Information
Brand Name Sony YI
Model type Sony Alpha A7S II YI M1
Type Pro Mirrorless Entry-Level Mirrorless
Announced 2015-10-12 2016-09-19
Physical type SLR-style mirrorless Rangefinder-style mirrorless
Sensor Information
Processor Bionz X -
Sensor type CMOS CMOS
Sensor size Full frame Four Thirds
Sensor dimensions 35.6 x 23.8mm 17.3 x 13mm
Sensor area 847.3mm² 224.9mm²
Sensor resolution 12MP 20MP
Anti alias filter
Aspect ratio 3:2 and 16:9 1:1, 4:3, 3:2 and 16:9
Highest resolution 4240 x 2832 5184 x 3888
Highest native ISO 102400 25600
Highest boosted ISO 409600 -
Minimum native ISO 100 100
RAW files
Minimum boosted ISO 50 -
Autofocusing
Manual focusing
Touch to focus
Autofocus continuous
Autofocus single
Tracking autofocus
Autofocus selectice
Center weighted autofocus
Multi area autofocus
Live view autofocus
Face detection focus
Contract detection focus
Phase detection focus
Total focus points 169 81
Lens
Lens mount type Sony E Micro Four Thirds
Available lenses 121 107
Crop factor 1 2.1
Screen
Screen type Tilting Fixed Type
Screen diagonal 3" 3"
Screen resolution 1,229k dots 1,040k dots
Selfie friendly
Liveview
Touch display
Viewfinder Information
Viewfinder type Electronic None
Viewfinder resolution 2,359k dots -
Viewfinder coverage 100 percent -
Viewfinder magnification 0.78x -
Features
Lowest shutter speed 30 secs 60 secs
Highest shutter speed 1/8000 secs 1/4000 secs
Continuous shooting rate 5.0fps 5.0fps
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes Yes
Custom white balance
Image stabilization
Built-in flash
Flash distance no built-in flash no built-in flash
Flash settings no built-in flash Auto, On, Off, Slow Sync, Red-Eye Slow
External flash
Auto exposure bracketing
White balance bracketing
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 4K (3840 x 2160 @ 30p/24p [60-100Mbps]), Full HD (1920 x 1080 @ 120p/60p/60i/30p/24p [50-100Mbps]), 720p (30p [16Mbps]) 4096 x 2160 @ 30p / 75 Mbps, MOV, H.264, AAC
Highest video resolution 3840x2160 4096x2160
Video format MPEG-4, AVCHD, XAVC S MPEG-4, H.264
Mic 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 proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 627 grams (1.38 lb) 350 grams (0.77 lb)
Physical dimensions 127 x 96 x 60mm (5.0" x 3.8" x 2.4") 114 x 64 x 34mm (4.5" x 2.5" x 1.3")
DXO scores
DXO All around rating 85 not tested
DXO Color Depth rating 23.6 not tested
DXO Dynamic range rating 13.3 not tested
DXO Low light rating 2993 not tested
Other
Battery life 370 shots 450 shots
Battery type Battery Pack Battery Pack
Battery ID NP-FW50 -
Self timer Yes (2 or 10 sec; continuous (3 or 5 exposures)) Yes (2 or 10 secs)
Time lapse feature With downloadable app
Storage type SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo SD/SDHC/SDXC card
Card slots One One
Launch pricing $2,767 $320