Sony A77 vs YI M1

Sony SLT-A77 front
YI M1 front

Sony A77 vs YI M1 Key Specs

Sony A77
(Full Review)
  • 24MP - APS-C Sensor
  • 3" Fully Articulated Display
  • ISO 50 - 16000 (Expand to 25600)
  • Sensor based Image Stabilization
  • 1/8000s Maximum Shutter
  • 1920 x 1080 video
  • Sony/Minolta Alpha Mount
  • 732g - 143 x 104 x 81mm
  • Announced October 2011
  • Earlier Model is Sony A700
  • Successor is Sony A77 II
(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
  • Released September 2016
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Sony A77 vs YI M1 Overview

Below, we are reviewing the Sony A77 vs YI M1, former is a Advanced DSLR while the other is a Entry-Level Mirrorless by rivals Sony and YI. The sensor resolution of the A77 (24MP) and the M1 (20MP) is very well matched but the A77 (APS-C) and M1 (Four Thirds) possess different sensor size.

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The A77 was brought out 5 years earlier than the M1 which is quite a serious difference as far as tech is concerned. Both the cameras come with different body type with the Sony A77 being a Mid-size SLR camera and the YI M1 being a Rangefinder-style mirrorless camera.

Before going straight into a detailed comparison, below is a brief introduction of how the A77 grades vs the M1 in terms of portability, imaging, features and an overall score.

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Reasons to pick Sony A77 over the YI M1

 A77 M1 
Display typeFully ArticulatedFixed Fully Articulating display
Selfie screen Easy selfies

Reasons to pick YI M1 over the Sony A77

 M1 A77 
ReleasedSeptember 2016October 2011More modern by 59 months
Display resolution1040k921kCrisper display (+119k dot)
Touch friendly display Easily navigate

Common features in the Sony A77 and YI M1

 A77 M1 
Manual focus More accurate focusing
Display dimension3"3"Identical display size

Sony A77 vs YI M1 Physical Comparison

For anybody who is looking to carry around your camera regularly, you're going to have to think about its weight and measurements. The Sony A77 features external measurements of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") with a weight of 732 grams (1.61 lbs) while the YI M1 has proportions of 114mm x 64mm x 34mm (4.5" x 2.5" x 1.3") having a weight of 350 grams (0.77 lbs).

Compare the Sony A77 vs YI M1 in our completely new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an ILC will change dependant on the lens you use during that time. The following is the front view physical size comparison of the A77 vs the M1.

Sony A77 vs YI M1 size comparison

Considering size and weight, the portability score of the A77 and M1 is 59 and 87 respectively.

Sony A77 vs YI M1 top view buttons comparison

Sony A77 vs YI M1 Sensor Comparison

Oftentimes, it is tough to picture the contrast between sensor sizes purely by looking at a spec sheet. The image here may provide you a stronger sense of the sensor measurements in the A77 and M1.

As you can see, each of the cameras have got different megapixels and different sensor sizes. The A77 featuring a larger sensor is going to make achieving shallow depth of field less difficult and the Sony A77 will give you extra detail having its extra 4 Megapixels. Greater resolution will make it easier to crop images much more aggressively. The more aged A77 is going to be behind in sensor technology.

Sony A77 vs YI M1 sensor size comparison

Sony A77 vs YI M1 Screen and ViewFinder

Sony A77 vs YI M1 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Sony A77 Portrait photography features
YI M1 Portrait photography features
has manual focus
good MP (24MP)
sensor size is good (APS-C)
offers face detection autofocus
supports RAW formats
manual focus
megapixel count good (20 megapixels)
sensor size is good (Four Thirds)
includes face detect focusing
saves RAW formats
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Street Comparison

Street photography with Sony A77
Street photography with YI M1
screen can move to multiple angles
has image stabilization (Sensor based)
sensor size is good (APS-C)
supports RAW formats
weather proofing
sensor size is good (Four Thirds)
saves RAW formats
comes with touch to focus
very good ISO range (25,600)
no moving screen
does not have image stabilization
400 Megapixel mode coming to Fujifilm GFX 100

Sports Comparison

Sony A77 Sports photography factors
YI M1 Sports photography factors
high shutter speed (1/8,000s)
has image stabilization (Sensor based)
good MP (24MP)
sensor size is good (APS-C)
weather proofing
has phase detect autofocus
terrible battery pack (470 CIPA)
megapixel count good (20MP)
sensor size is good (Four Thirds)
great battery (450 per charge)
slow fps (5.0 frames/s)
does not have image stabilization
lack of phase detect AF
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Travel Comparison

Travel photography with Sony A77
Travel photography with YI M1
weather proofing
good MP (24MP)
has built in flash
display is selfie friendly
no Time Lapse mode
terrible battery pack (470 CIPA)
great battery (450 shots)
has bluetooth
comes with touch to focus
megapixel count good (20 megapixels)
doesn't have selfie friendly display
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Landscape Comparison

Sony A77 as a Landscape photography camera
YI M1 as a Landscape photography camera
has manual focus
switch lenses (Sony/Minolta Alpha mount)
pretty good screen size (3 inches)
has image stabilization (Sensor based)
good MP (24 megapixels)
sensor size is good (APS-C)
supports RAW formats
weather proofing
terrible battery pack (470 per charge)
no Time Lapse mode
manual focus
switch lenses (Micro Four Thirds mount)
good sized screen (3")
megapixel count good (20MP)
sensor size is good (Four Thirds)
very good ISO range (25,600)
saves RAW formats
great battery (450 CIPA)
does not have image stabilization
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Vlogging Comparison

Sony A77 Vlogging details
YI M1 Vlogging details
display is selfie friendly
has image stabilization (Sensor based)
offers face detection autofocus
video res high (1920 x 1080 pixels)
has external mic socket
touchscreen capability
includes face detect focusing
video resolution high (4096 x 2160 pixels)
doesn't have selfie friendly display
does not have image stabilization
missing microphone port
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Sony A77 vs YI M1 Specifications

Detailed spec comparison table for Sony A77 and YI M1
 Sony SLT-A77YI M1
General Information
Manufacturer Sony YI
Model type Sony SLT-A77 YI M1
Class Advanced DSLR Entry-Level Mirrorless
Announced 2011-10-25 2016-09-19
Body design Mid-size SLR Rangefinder-style mirrorless
Sensor Information
Processor Chip Bionz -
Sensor type CMOS CMOS
Sensor size APS-C Four Thirds
Sensor measurements 23.5 x 15.6mm 17.3 x 13mm
Sensor area 366.6mm² 224.9mm²
Sensor resolution 24 megapixel 20 megapixel
Anti alias filter
Aspect ratio 3:2 and 16:9 1:1, 4:3, 3:2 and 16:9
Highest resolution 6000 x 4000 5184 x 3888
Highest native ISO 16000 25600
Highest boosted ISO 25600 -
Minimum native ISO 50 100
RAW support
Focus manually
Touch focus
AF continuous
Single AF
Tracking AF
Selective AF
AF center weighted
Multi area AF
AF live view
Face detect AF
Contract detect AF
Phase detect AF
Total focus points 19 81
Cross type focus points 11 -
Lens mount type Sony/Minolta Alpha Micro Four Thirds
Total lenses 143 107
Crop factor 1.5 2.1
Display type Fully Articulated Fixed Type
Display diagonal 3" 3"
Resolution of display 921 thousand dot 1,040 thousand dot
Selfie friendly
Touch function
Viewfinder Information
Viewfinder Electronic None
Viewfinder resolution 2,359 thousand dot -
Viewfinder coverage 100% -
Viewfinder magnification 0.73x -
Slowest shutter speed 30s 60s
Maximum shutter speed 1/8000s 1/4000s
Continuous shooting speed 12.0 frames/s 5.0 frames/s
Shutter priority
Aperture priority
Manual exposure
Exposure compensation Yes Yes
Custom WB
Image stabilization
Integrated flash
Flash distance 12.00 m no built-in flash
Flash settings Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless Auto, On, Off, Slow Sync, Red-Eye Slow
External flash
Auto exposure bracketing
WB bracketing
Maximum flash sync 1/250s -
AF area
Center weighted
Video features
Video resolutions 1920 x 1080 (60, 24 fps), 1440 x 1080 (30fps), 640 x 424 (29.97 fps) 4096 x 2160 @ 30p / 75 Mbps, MOV, H.264, AAC
Highest video resolution 1920x1080 4096x2160
Video data format MPEG-4, AVCHD, H.264 MPEG-4, H.264
Microphone jack
Headphone jack
Wireless Eye-Fi Connected Built-In
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS BuiltIn None
Environment seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 732 grams (1.61 lbs) 350 grams (0.77 lbs)
Dimensions 143 x 104 x 81mm (5.6" x 4.1" x 3.2") 114 x 64 x 34mm (4.5" x 2.5" x 1.3")
DXO scores
DXO All around rating 78 not tested
DXO Color Depth rating 24.0 not tested
DXO Dynamic range rating 13.2 not tested
DXO Low light rating 801 not tested
Battery life 470 photos 450 photos
Style of battery Battery Pack Battery Pack
Battery ID NP-FM500H -
Self timer Yes (2 or 10 sec) Yes (2 or 10 secs)
Time lapse recording
Type of storage SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo SD/SDHC/SDXC card
Storage slots 1 1
Retail price $900 $320