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Sony A7R III vs Sony A77

Portability
63
Imaging
78
Features
93
Overall
84
Sony Alpha A7R III front
 
Sony SLT-A77 front
Portability
59
Imaging
63
Features
83
Overall
71

Sony A7R III vs Sony A77 Key Specs

Sony A7R III
(Full Review)
  • 42MP - Full frame Sensor
  • 3" Tilting Screen
  • ISO 100 - 32000 (Increase to 102400)
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 657g - 127 x 96 x 74mm
  • Launched October 2017
  • Older Model is Sony A7R II
  • Successor is Sony A7R IV
Sony A77
(Full Review)
  • 24MP - APS-C Sensor
  • 3" Fully Articulated Screen
  • ISO 50 - 16000 (Raise to 25600)
  • Sensor based Image Stabilization
  • 1/8000s Max Shutter
  • 1920 x 1080 video
  • Sony/Minolta Alpha Mount
  • 732g - 143 x 104 x 81mm
  • Launched October 2011
  • Old Model is Sony A700
  • Renewed by Sony A77 II
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Sony A7R III vs Sony A77 Overview

Let's look much closer at the Sony A7R III vs Sony A77, one is a Pro Mirrorless and the latter is a Advanced DSLR and both are produced by Sony. There exists a significant gap among the image resolutions of the A7R III (42MP) and A77 (24MP) and the A7R III (Full frame) and A77 (APS-C) provide different sensor size.

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The A7R III was released 6 years after the A77 which is a fairly sizable gap as far as camera technology is concerned. Both of these cameras feature different body design with the Sony A7R III being a SLR-style mirrorless camera and the Sony A77 being a Mid-size SLR camera.

Before we go straight to a thorough comparison, here is a short summary of how the A7R III grades versus the A77 in regards to portability, imaging, features and an overall score.

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Reasons to pick Sony A7R III over the Sony A77

 A7R III A77 
LaunchedOctober 2017October 2011More modern by 74 months
Screen resolution1440k921kClearer screen (+519k dot)
Touch screen Quickly navigate

Reasons to pick Sony A77 over the Sony A7R III

 A77 A7R III 
Screen typeFully ArticulatedTiltingFully Articulating screen
Selfie screen Take selfies

Common features in the Sony A7R III and Sony A77

 A7R III A77 
Manual focus Very accurate focusing
Screen size3"3"Same screen size

Sony A7R III vs Sony A77 Physical Comparison

For those who are going to carry around your camera regularly, you need to factor its weight and volume. The Sony A7R III comes with outside dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") with a weight of 657 grams (1.45 lbs) while the Sony A77 has sizing of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") along with a weight of 732 grams (1.61 lbs).

Check out the Sony A7R III vs Sony A77 in the new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember, the weight of an Interchangeable Lens Camera will change depending on the lens you choose at that time. Here is a front view dimensions comparison of the A7R III versus the A77.

Sony A7R III vs Sony A77 size comparison

Considering dimensions and weight, the portability grade of the A7R III and A77 is 63 and 59 respectively.

Sony A7R III vs Sony A77 top view buttons comparison

Sony A7R III vs Sony A77 Sensor Comparison

Typically, it is very tough to visualize the difference in sensor sizes purely by looking through technical specs. The picture here will give you a better sense of the sensor dimensions in the A7R III and A77.

As you have seen, each of these cameras come with different megapixels and different sensor sizes. The A7R III due to its bigger sensor is going to make shooting shallower DOF less difficult and the Sony A7R III will result in greater detail as a result of its extra 18 Megapixels. Higher resolution can also make it easier to crop pictures a good deal more aggressively. The more recent A7R III should have a benefit in sensor tech.

Sony A7R III vs Sony A77 sensor size comparison

Sony A7R III vs Sony A77 Screen and ViewFinder

Sony A7R III vs Sony A77 Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Sony A7R III Portrait photography details
Sony A77 Portrait photography details
86
has manual focus
MP count great (42MP)
great sensor size (Full frame)
features face detect focusing
supports RAW formats
77
you can focus manually
decent megapixels (24MP)
good sensor size (APS-C)
offers face detect focus
delivers RAW formats
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Street Comparison

Street photography with Sony A7R III
Street photography with Sony A77
79
has a tilting screen
has image stabilization (Sensor based 5-axis)
great sensor size (Full frame)
supports RAW formats
has touch focus
environment sealing
above average ISO range (32,000)
74
screen articulates
image stabilization (Sensor based)
good sensor size (APS-C)
delivers RAW formats
environment sealing
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Sports Comparison

Sony A7R III as a Sports photography camera
Sony A77 as a Sports photography camera
89
max shutter speed is good (1/8,000 seconds)
has image stabilization (Sensor based 5-axis)
MP count great (42MP)
great sensor size (Full frame)
features tracking focus
environment sealing
great battery pack (650 CIPA)
has phase detect AF
74
high shutter speed (1/8,000s)
image stabilization (Sensor based)
decent megapixels (24 megapixels)
good sensor size (APS-C)
environment sealing
supports phase detect auto focus
low battery life (470 CIPA)
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Travel Comparison

Travel photography with Sony A7R III
Travel photography with Sony A77
74
great battery pack (650 CIPA)
environment sealing
has bluetooth
has touch focus
MP count great (42 megapixels)
does not posses selfie friendly display
62
environment sealing
decent megapixels (24 megapixels)
built-in flash
selfie friendly screen
no Timelapse mode
low battery life (470 per charge)
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Landscape Comparison

Sony A7R III as a Landscape photography camera
Sony A77 as a Landscape photography camera
87
has manual focus
interchangeable lenses (Sony E mount)
pretty good screen size (3")
has image stabilization (Sensor based 5-axis)
MP count great (42 megapixels)
great sensor size (Full frame)
no low pass filter
above average ISO range (32,000)
supports RAW formats
environment sealing
great battery pack (650 per charge)
two card slots
71
you can focus manually
swap lenses (Sony/Minolta Alpha mount)
pretty good screen size (3 inch)
image stabilization (Sensor based)
decent megapixels (24MP)
good sensor size (APS-C)
delivers RAW formats
environment sealing
low battery life (470 CIPA)
no Timelapse mode
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Vlogging Comparison

Vlogging with Sony A7R III
Vlogging with Sony A77
37
built-in touchscreen
has image stabilization (Sensor based 5-axis)
features face detect focusing
video resolution high (3840 x 2160 resolution)
has microphone socket
does not posses selfie friendly display
76
selfie friendly screen
image stabilization (Sensor based)
offers face detect focus
high quality video (1920 x 1080 pxls)
comes with microphone support
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Sony A7R III vs Sony A77 Specifications

Detailed spec comparison table for Sony A7R III and Sony A77
 Sony Alpha A7R IIISony SLT-A77
General Information
Manufacturer Sony Sony
Model type Sony Alpha A7R III Sony SLT-A77
Type Pro Mirrorless Advanced DSLR
Launched 2017-10-25 2011-10-25
Physical type SLR-style mirrorless Mid-size SLR
Sensor Information
Processor Chip Bionz X Bionz
Sensor type BSI-CMOS CMOS
Sensor size Full frame APS-C
Sensor measurements 35.9 x 24mm 23.5 x 15.6mm
Sensor area 861.6mm² 366.6mm²
Sensor resolution 42 megapixels 24 megapixels
Anti alias filter
Aspect ratio 3:2 and 16:9 3:2 and 16:9
Highest Possible resolution 7952 x 5304 6000 x 4000
Maximum native ISO 32000 16000
Maximum enhanced ISO 102400 25600
Min native ISO 100 50
RAW pictures
Min enhanced ISO 50 -
Autofocusing
Focus manually
Autofocus touch
Continuous autofocus
Single autofocus
Tracking autofocus
Autofocus selectice
Center weighted autofocus
Autofocus multi area
Live view autofocus
Face detection focus
Contract detection focus
Phase detection focus
Total focus points 425 19
Cross type focus points - 11
Lens
Lens support Sony E Sony/Minolta Alpha
Total lenses 121 143
Focal length multiplier 1 1.5
Screen
Type of screen Tilting Fully Articulated
Screen size 3" 3"
Resolution of screen 1,440 thousand dots 921 thousand dots
Selfie friendly
Liveview
Touch functionality
Viewfinder Information
Viewfinder Electronic Electronic
Viewfinder resolution 3,686 thousand dots 2,359 thousand dots
Viewfinder coverage 100% 100%
Viewfinder magnification 0.78x 0.73x
Features
Minimum shutter speed 30 secs 30 secs
Fastest shutter speed 1/8000 secs 1/8000 secs
Continuous shutter rate 10.0fps 12.0fps
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Custom white balance
Image stabilization
Integrated flash
Flash distance no built-in flash 12.00 m
Flash modes Off, Auto, Fill-flash, Slow Sync, Rear Sync, Red-eye reduction, Wireless, Hi-speed sync Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless
Hot shoe
AE bracketing
White balance bracketing
Fastest flash synchronize - 1/250 secs
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions 3840 x 2160 (30p, 25p, 24p), 1920 x 1080 (60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p) 1920 x 1080 (60, 24 fps), 1440 x 1080 (30fps), 640 x 424 (29.97 fps)
Maximum video resolution 3840x2160 1920x1080
Video file format MPEG-4, AVCHD, XAVC S MPEG-4, AVCHD, H.264
Microphone support
Headphone support
Connectivity
Wireless Built-In Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 3.1 Gen 1(5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS None BuiltIn
Physical
Environmental sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 657 gr (1.45 pounds) 732 gr (1.61 pounds)
Physical dimensions 127 x 96 x 74mm (5.0" x 3.8" x 2.9") 143 x 104 x 81mm (5.6" x 4.1" x 3.2")
DXO scores
DXO Overall rating 100 78
DXO Color Depth rating 26.0 24.0
DXO Dynamic range rating 14.7 13.2
DXO Low light rating 3523 801
Other
Battery life 650 photographs 470 photographs
Type of battery Battery Pack Battery Pack
Battery ID NP-FZ100 NP-FM500H
Self timer Yes (2 or 10 sec; continuous (3 or 5 exposures)) Yes (2 or 10 sec)
Time lapse shooting
Type of storage Two SD/SDHC/SDXC slots (UHS-II support on one) SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo
Card slots 2 One
Launch cost $2,800 $900