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Sony A7 III vs Sony A77

Portability
63
Imaging
74
Features
92
Overall
81
Sony Alpha A7 III front
 
Sony SLT-A77 front
Portability
59
Imaging
63
Features
83
Overall
71

Sony A7 III vs Sony A77 Key Specs

Sony A7 III
(Full Review)
  • 24MP - Full frame Sensor
  • 3" Tilting Screen
  • ISO 100 - 51200 (Push to 204800)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 650g - 127 x 96 x 74mm
  • Introduced February 2018
  • Previous Model is Sony A7 II
  • New Model is Sony A7 IV
Sony A77
(Full Review)
  • 24MP - APS-C Sensor
  • 3" Fully Articulated Screen
  • ISO 50 - 16000 (Expand 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
  • Succeeded the Sony A700
  • New Model is Sony A77 II
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Sony A7 III vs Sony A77 Overview

Lets look a bit more closely at the Sony A7 III versus Sony A77, one being a Pro Mirrorless and the latter is a Advanced DSLR and both of them are sold by Sony. The sensor resolution of the A7 III (24MP) and the A77 (24MP) is relatively well matched but the A7 III (Full frame) and A77 (APS-C) feature different sensor size.

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The A7 III was announced 6 years later than the A77 and that is quite a serious gap as far as technology is concerned. Both of these cameras come with different body type with the Sony A7 III being a SLR-style mirrorless camera and the Sony A77 being a Mid-size SLR camera.

Before diving through a more detailed comparison, below is a brief overview of how the A7 III matches up versus the A77 when it comes to portability, imaging, features and an overall rating.

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Reasons to pick Sony A7 III over the Sony A77

 A7 III A77 
LaunchedFebruary 2018October 2011Fresher by 78 months
Screen resolution922k921kClearer screen (+1k dot)
Touch screen Quickly navigate

Reasons to pick Sony A77 over the Sony A7 III

 A77 A7 III 
Screen typeFully ArticulatedTiltingFully Articulating screen
Selfie screen Easy selfies

Common features in the Sony A7 III and Sony A77

 A7 III A77 
Manual focus Very exact focus
Screen dimension3"3"Identical screen size

Sony A7 III vs Sony A77 Physical Comparison

For those who are looking to carry your camera often, you will need to take into account its weight and volume. The Sony A7 III comes with exterior measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") having a weight of 650 grams (1.43 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 the Sony A7 III versus Sony A77 in the latest Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Don't forget, the weight of an Interchangeable Lens Camera will change dependant on the lens you are utilizing at the time. Underneath is the front view proportions comparison of the A7 III vs the A77.

Sony A7 III vs Sony A77 size comparison

Looking at dimensions and weight, the portability rating of the A7 III and A77 is 63 and 59 respectively.

Sony A7 III vs Sony A77 top view buttons comparison

Sony A7 III vs Sony A77 Sensor Comparison

Sometimes, it is very difficult to imagine the gap between sensor sizing simply by reading through specifications. The visual underneath should give you a better sense of the sensor measurements in the A7 III and A77.

To sum up, each of the cameras have got the exact same megapixels albeit different sensor sizing. The A7 III has the bigger sensor which should make obtaining shallower depth of field simpler. The younger A7 III provides an advantage with regard to sensor innovation.

Sony A7 III vs Sony A77 sensor size comparison

Sony A7 III vs Sony A77 Screen and ViewFinder

Sony A7 III vs Sony A77 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with Sony A7 III
Portrait photography with Sony A77
84
manual focus
megapixel count good (24MP)
sensor size is great (Full frame)
has face detection focusing
exports RAW files
77
focusing manually
decent sensor resolution (24 megapixels)
decent sensor size (APS-C)
comes with face detect focusing
delivers RAW files
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Street Comparison

Sony A7 III Street photography factors
Sony A77 Street photography factors
78
has a tilting screen
has image stabilization (Sensor based 5-axis)
sensor size is great (Full frame)
exports RAW files
features touch focus
environment sealing
above average high ISO (51,200)
74
fully articulated screen
image stabilization (Sensor based)
decent sensor size (APS-C)
delivers RAW files
environment proof
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Sports Comparison

Sony A7 III Sports photography advice
Sony A77 Sports photography advice
87
max shutter speed is good (1/8,000s)
has image stabilization (Sensor based 5-axis)
megapixel count good (24MP)
sensor size is great (Full frame)
has tracking autofocus
environment sealing
great battery power (610 shots)
supports phase detect AF
74
great max shutter speed (1/8,000s)
image stabilization (Sensor based)
decent sensor resolution (24 megapixels)
decent sensor size (APS-C)
environment proof
sensor has phase detect AF
not so great battery life (470 shots)
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Travel Comparison

Sony A7 III Travel photography features
Sony A77 Travel photography features
73
great battery power (610 shots)
environment sealing
has bluetooth
features touch focus
megapixel count good (24 megapixels)
doesn't posses selfie friendly display
62
environment proof
decent sensor resolution (24 megapixels)
has built in flash
selfie friendly display
no Time Lapse function
not so great battery life (470 per charge)
Photography Glossary

Landscape Comparison

Sony A7 III Landscape photography highlights
Sony A77 Landscape photography highlights
85
manual focus
interchangeable lenses (Sony E mount)
nice screen size (3 inches)
has image stabilization (Sensor based 5-axis)
megapixel count good (24MP)
sensor size is great (Full frame)
above average high ISO (51,200)
exports RAW files
environment sealing
great battery power (610 per charge)
two card slots
71
focusing manually
change lenses (Sony/Minolta Alpha mount)
screen size is good (3 inch)
image stabilization (Sensor based)
decent sensor resolution (24MP)
decent sensor size (APS-C)
delivers RAW files
environment proof
not so great battery life (470 per charge)
no Time Lapse function
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Vlogging Comparison

Sony A7 III Vlogging info
Sony A77 Vlogging info
36
has touchscreen
has image stabilization (Sensor based 5-axis)
has face detection focusing
video res high (3840 x 2160 pxls)
comes with external microphone socket
doesn't posses selfie friendly display
76
selfie friendly display
image stabilization (Sensor based)
comes with face detect focusing
high res video (1920 x 1080 pxls)
includes mic support
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Sony A7 III vs Sony A77 Specifications

Detailed spec comparison table for Sony A7 III and Sony A77
 Sony Alpha A7 IIISony SLT-A77
General Information
Manufacturer Sony Sony
Model Sony Alpha A7 III Sony SLT-A77
Class Pro Mirrorless Advanced DSLR
Introduced 2018-02-27 2011-10-25
Physical type SLR-style mirrorless Mid-size SLR
Sensor Information
Processor Bionz X Bionz
Sensor type BSI-CMOS CMOS
Sensor size Full frame APS-C
Sensor dimensions 35.8 x 23.8mm 23.5 x 15.6mm
Sensor surface area 852.0mm² 366.6mm²
Sensor resolution 24 megapixels 24 megapixels
Anti aliasing filter
Aspect ratio 3:2 and 16:9 3:2 and 16:9
Peak resolution 6000 x 4000 6000 x 4000
Highest native ISO 51200 16000
Highest enhanced ISO 204800 25600
Min native ISO 100 50
RAW images
Min enhanced ISO 50 -
Autofocusing
Focus manually
AF touch
AF continuous
Single AF
AF tracking
AF selectice
Center weighted AF
Multi area AF
Live view AF
Face detection focusing
Contract detection focusing
Phase detection focusing
Number of focus points 693 19
Cross focus points - 11
Lens
Lens mount Sony E Sony/Minolta Alpha
Available lenses 121 143
Focal length multiplier 1 1.5
Screen
Type of screen Tilting Fully Articulated
Screen size 3 inches 3 inches
Screen resolution 922 thousand dots 921 thousand dots
Selfie friendly
Liveview
Touch functionality
Viewfinder Information
Viewfinder type Electronic Electronic
Viewfinder resolution 2,359 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
Expose Manually
Exposure compensation Yes Yes
Set WB
Image stabilization
Built-in flash
Flash range no built-in flash 12.00 m
Flash modes no built-in flash Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless
Hot shoe
AEB
WB bracketing
Fastest flash synchronize - 1/250 secs
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported video resolutions 3840 x 2160 (30p, 24p) 1920 x 1080 (120p, 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)
Highest video resolution 3840x2160 1920x1080
Video file format MPEG-4, AVCHD, XAVC S, H.264 MPEG-4, AVCHD, H.264
Mic 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 proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 650 gr (1.43 lbs) 732 gr (1.61 lbs)
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 score 96 78
DXO Color Depth score 25.0 24.0
DXO Dynamic range score 14.7 13.2
DXO Low light score 3730 801
Other
Battery life 610 photographs 470 photographs
Battery style Battery Pack Battery Pack
Battery model NP-FZ100 NP-FM500H
Self timer Yes (2 or 10 sec; continuous (3 or 5 exposures)) Yes (2 or 10 sec)
Time lapse recording
Storage type SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo
Card slots 2 1
Price at release $1,998 $900