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Sony A7 III vs Sony A55

Portability
63
Imaging
74
Features
92
Overall
81
Sony Alpha A7 III front
 
Sony SLT-A55 front
Portability
67
Imaging
56
Features
80
Overall
65

Sony A7 III vs Sony A55 Key Specs

Sony A7 III
(Full Review)
  • 24MP - Full frame Sensor
  • 3" Tilting Screen
  • ISO 100 - 51200 (Bump 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
  • Superseded the Sony A7 II
  • Renewed by Sony A7 IV
Sony A55
(Full Review)
  • 16MP - APS-C Sensor
  • 3" Fully Articulated Screen
  • ISO 100 - 12800 (Expand to 25600)
  • Sensor based Image Stabilization
  • 1920 x 1080 video
  • Sony/Minolta Alpha Mount
  • 500g - 124 x 92 x 85mm
  • Revealed August 2010
  • Newer Model is Sony A57
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Sony A7 III vs Sony A55 Overview

Below, we will be analyzing the Sony A7 III versus Sony A55, former being a Pro Mirrorless while the latter is a Entry-Level DSLR and both of them are designed by Sony. There exists a noticeable gap between the resolutions of the A7 III (24MP) and A55 (16MP) and the A7 III (Full frame) and A55 (APS-C) come with totally different sensor size.

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The A7 III was launched 7 years later than the A55 and that is quite a sizable difference as far as technology is concerned. Both cameras come with different body type with the Sony A7 III being a SLR-style mirrorless camera and the Sony A55 being a Compact SLR camera.

Before getting straight into a step-by-step comparison, below is a concise summation of how the A7 III matches up against the A55 in terms of portability, imaging, features and an overall grade.

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Reasons to pick Sony A7 III over the Sony A55

 A7 III A55 
RevealedFebruary 2018August 2010More recent by 92 months
Screen resolution922k921kSharper screen (+1k dot)
Touch screen Quickly navigate

Reasons to pick Sony A55 over the Sony A7 III

 A55 A7 III 
Screen typeFully ArticulatedTiltingFully Articulating screen
Selfie screen Easy selfies

Common features in the Sony A7 III and Sony A55

 A7 III A55 
Manually focus More precise focusing
Screen dimension3"3"Identical screen size

Sony A7 III vs Sony A55 Physical Comparison

For anyone who is planning to lug around your camera, you should consider its weight and size. The Sony A7 III features external 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 A55 has specifications of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") having a weight of 500 grams (1.10 lbs).

Look at the Sony A7 III versus Sony A55 in our newest Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember, the weight of an ILC will change depending on the lens you are employing at that time. Following is the front view scale comparison of the A7 III and the A55.

Sony A7 III vs Sony A55 size comparison

Using dimensions and weight, the portability score of the A7 III and A55 is 63 and 67 respectively.

Sony A7 III vs Sony A55 top view buttons comparison

Sony A7 III vs Sony A55 Sensor Comparison

Sometimes, it is difficult to visualise the gap between sensor measurements purely by reviewing technical specs. The visual here should offer you a stronger sense of the sensor sizing in the A7 III and A55.

As you can tell, the 2 cameras have got different megapixel count and different sensor measurements. The A7 III due to its bigger sensor will make achieving shallower depth of field less difficult and the Sony A7 III will deliver extra detail utilizing its extra 8MP. Higher resolution will make it easier to crop shots much more aggressively. The fresher A7 III will have a benefit in sensor technology.

Sony A7 III vs Sony A55 sensor size comparison

Sony A7 III vs Sony A55 Screen and ViewFinder

Sony A7 III vs Sony A55 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with Sony A7 III
Portrait photography with Sony A55
84
manual focus
resolution is good (24MP)
big sensor size (Full frame)
comes with face detection autofocus
supports RAW files
73
you can focus manually
sensor resolution is decent (16MP)
good sensor size (APS-C)
includes face detect focus
supports RAW files
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Street Comparison

Sony A7 III Street photography advice
Sony A55 Street photography advice
78
screen tilts
image stabilization (Sensor based 5-axis)
big sensor size (Full frame)
supports RAW files
provides focus via touch
environment proof
good high ISO (51,200)
77
screen can move to multiple angles
built in image stabilization (Sensor based)
good sensor size (APS-C)
supports RAW files
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Sports Comparison

Sony A7 III Sports photography features
Sony A55 Sports photography features
87
great max shutter speed (1/8,000 seconds)
image stabilization (Sensor based 5-axis)
resolution is good (24 megapixels)
big sensor size (Full frame)
comes with tracking autofocus
environment proof
good battery pack (610 shots)
comes with phase detect autofocus
68
built in image stabilization (Sensor based)
sensor resolution is decent (16 megapixels)
good sensor size (APS-C)
supports phase detect auto focus
bad battery pack (380 per charge)
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Travel Comparison

Sony A7 III Travel photography factors
Sony A55 Travel photography factors
73
good battery pack (610 shots)
environment proof
supports bluetooth
provides focus via touch
resolution is good (24 megapixels)
does not have selfie friendly display
62
sensor resolution is decent (16 megapixels)
has built in flash
display is selfie friendly
lack of Time Lapse recording
bad battery pack (380 shots)
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Landscape Comparison

Sony A7 III Landscape photography information
Sony A55 Landscape photography information
85
manual focus
interchangeable lenses (Sony E mount)
screen size is good (3 inch)
image stabilization (Sensor based 5-axis)
resolution is good (24MP)
big sensor size (Full frame)
good high ISO (51,200)
supports RAW files
environment proof
good battery pack (610 per charge)
has dual storage slots
67
you can focus manually
change lenses (Sony/Minolta Alpha mount)
nice screen size (3")
built in image stabilization (Sensor based)
sensor resolution is decent (16 megapixels)
good sensor size (APS-C)
supports RAW files
bad battery pack (380 per charge)
lack of Time Lapse recording
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Vlogging Comparison

Vlogging with Sony A7 III
Vlogging with Sony A55
36
touchscreen capability
image stabilization (Sensor based 5-axis)
comes with face detection autofocus
video res high (3840 x 2160 resolution)
does have external microphone jack
does not have selfie friendly display
78
display is selfie friendly
built in image stabilization (Sensor based)
includes face detect focus
video res high (1920 x 1080 pxls)
comes with mic support
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Sony A7 III vs Sony A55 Specifications

Detailed spec comparison table for Sony A7 III and Sony A55
 Sony Alpha A7 IIISony SLT-A55
General Information
Manufacturer Sony Sony
Model Sony Alpha A7 III Sony SLT-A55
Class Pro Mirrorless Entry-Level DSLR
Introduced 2018-02-27 2010-08-24
Physical type SLR-style mirrorless Compact 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 area 852.0mm² 366.6mm²
Sensor resolution 24 megapixel 16 megapixel
Anti aliasing filter
Aspect ratio 3:2 and 16:9 3:2 and 16:9
Highest Possible resolution 6000 x 4000 4912 x 3264
Maximum native ISO 51200 12800
Maximum enhanced ISO 204800 25600
Lowest native ISO 100 100
RAW support
Lowest enhanced ISO 50 -
Autofocusing
Manual focus
Touch focus
Continuous AF
Single AF
Tracking AF
Selective AF
AF center weighted
AF multi area
AF live view
Face detection focusing
Contract detection focusing
Phase detection focusing
Number of focus points 693 15
Cross focus points - 3
Lens
Lens mounting type Sony E Sony/Minolta Alpha
Available lenses 121 143
Crop factor 1 1.5
Screen
Screen type Tilting Fully Articulated
Screen size 3" 3"
Screen resolution 922k dots 921k dots
Selfie friendly
Liveview
Touch function
Viewfinder Information
Viewfinder Electronic Electronic
Viewfinder resolution 2,359k dots 1,150k dots
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.78x 0.73x
Features
Min shutter speed 30 seconds 30 seconds
Max shutter speed 1/8000 seconds 1/4000 seconds
Continuous shutter rate 10.0 frames per sec 10.0 frames per sec
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Custom WB
Image stabilization
Integrated flash
Flash range no built-in flash 10.00 m (@ ISO 100)
Flash settings no built-in flash Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless
External flash
AE bracketing
White balance bracketing
Max flash synchronize - 1/160 seconds
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
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, 29.97 fps), 1440 x 1080 (30fps), 640 x 424 (29.97 fps)
Maximum video resolution 3840x2160 1920x1080
Video 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
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 650g (1.43 lb) 500g (1.10 lb)
Dimensions 127 x 96 x 74mm (5.0" x 3.8" x 2.9") 124 x 92 x 85mm (4.9" x 3.6" x 3.3")
DXO scores
DXO Overall score 96 73
DXO Color Depth score 25.0 23.0
DXO Dynamic range score 14.7 12.4
DXO Low light score 3730 816
Other
Battery life 610 images 380 images
Form of battery Battery Pack Battery Pack
Battery model NP-FZ100 NP-FW50
Self timer Yes (2 or 10 sec; continuous (3 or 5 exposures)) Yes (2 or 10 sec)
Time lapse feature
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 Dual One
Launch price $1,998 $800