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Sony A9 II vs Sony A55

Portability
62
Imaging
75
Features
93
Overall
82
Sony Alpha A9 Mark II front
 
Sony SLT-A55 front
Portability
67
Imaging
56
Features
80
Overall
65

Sony A9 II vs Sony A55 Key Specs

Sony A9 II
(Full Review)
  • 24MP - Full frame Sensor
  • 3" Tilting Display
  • ISO 100 - 51200 (Increase to 204800)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 678g - 129 x 96 x 76mm
  • Announced October 2019
  • Replaced the Sony A9
Sony A55
(Full Review)
  • 16MP - APS-C Sensor
  • 3" Fully Articulated Screen
  • ISO 100 - 12800 (Increase to 25600)
  • Sensor based Image Stabilization
  • 1920 x 1080 video
  • Sony/Minolta Alpha Mount
  • 500g - 124 x 92 x 85mm
  • Introduced August 2010
  • Successor is Sony A57
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Sony A9 II vs Sony A55 Overview

Let's take a closer look at the Sony A9 II and Sony A55, one being a Pro Mirrorless and the latter is a Entry-Level DSLR and both are designed by Sony. There is a big difference between the resolutions of the A9 II (24MP) and A55 (16MP) and the A9 II (Full frame) and A55 (APS-C) use different sensor dimensions.

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The A9 II was launched 9 years later than the A55 and that is quite a big gap as far as tech is concerned. The two cameras come with different body type with the Sony A9 II being a SLR-style mirrorless camera and the Sony A55 being a Compact SLR camera.

Before delving straight into a step-by-step comparison, below is a simple introduction of how the A9 II scores against the A55 when it comes to portability, imaging, features and an overall grade.

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Reasons to pick Sony A9 II over the Sony A55

 A9 II A55 
IntroducedOctober 2019August 2010More recent by 111 months
Screen resolution1440k921kClearer screen (+519k dot)
Touch screen Quickly navigate

Reasons to pick Sony A55 over the Sony A9 II

 A55 A9 II 
Screen typeFully ArticulatedTiltingFully Articulating screen
Selfie screen Easy selfies

Common features in the Sony A9 II and Sony A55

 A9 II A55 
Focus manually More accurate focusing
Screen dimension3"3"Identical screen sizing

Sony A9 II vs Sony A55 Physical Comparison

If you are aiming to lug around your camera, you should think about its weight and proportions. The Sony A9 II has outer measurements of 129mm x 96mm x 76mm (5.1" x 3.8" x 3.0") and a weight of 678 grams (1.49 lbs) and the Sony A55 has measurements of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") along with a weight of 500 grams (1.10 lbs).

Analyze the Sony A9 II and Sony A55 in the latest Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Always remember, the weight of an Interchangeable Lens Camera will differ depending on the lens you are utilising at the time. Underneath is the front view measurement comparison of the A9 II against the A55.

Sony A9 II vs Sony A55 size comparison

Using size and weight, the portability score of the A9 II and A55 is 62 and 67 respectively.

Sony A9 II vs Sony A55 top view buttons comparison

Sony A9 II vs Sony A55 Sensor Comparison

Oftentimes, it is difficult to picture the contrast between sensor measurements purely by reading technical specs. The graphic below will help offer you a far better sense of the sensor sizing in the A9 II and A55.

As you have seen, both of the cameras posses different resolutions and different sensor measurements. The A9 II because of its bigger sensor is going to make shooting shallower DOF easier and the Sony A9 II will deliver extra detail utilizing its extra 8 Megapixels. Higher resolution will also make it easier to crop pictures somewhat more aggressively. The newer A9 II provides a benefit in sensor tech.

Sony A9 II vs Sony A55 sensor size comparison

Sony A9 II vs Sony A55 Screen and ViewFinder

Sony A9 II vs Sony A55 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Sony A9 II Portrait photography information
Sony A55 Portrait photography information
85
focusing manually
megapixel count decent (24 megapixels)
sensor size is large (Full frame)
has face detection autofocus
supports RAW files
73
has manual focus
resolution is good (16 megapixels)
sensor size is nice (APS-C)
offers face detection focus
exports RAW formats
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Street Comparison

Sony A9 II Street photography details
Sony A55 Street photography details
78
screen tilts up and down
image stabilization (Sensor based 5-axis)
sensor size is large (Full frame)
supports RAW files
boasts touch to focus
environment proof
very good ISO range (51,200)
77
fully articulated screen
image stabilization (Sensor based)
sensor size is nice (APS-C)
exports RAW formats
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Sports Comparison

Sports photography with Sony A9 II
Sports photography with Sony A55
87
maximum shutter speed is high (1/8,000 seconds)
silent shooting (1/32,000 seconds)
fast shooting (20.0 frames/s)
image stabilization (Sensor based 5-axis)
megapixel count decent (24 megapixels)
sensor size is large (Full frame)
has tracking autofocus
environment proof
good battery pack (690 shots)
sensor has phase detect autofocus
68
image stabilization (Sensor based)
resolution is good (16MP)
sensor size is nice (APS-C)
supports phase detect auto focus
not so great battery power (380 shots)
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Travel Comparison

Sony A9 II Travel photography details
Sony A55 Travel photography details
73
good battery pack (690 CIPA)
environment proof
has bluetooth
boasts touch to focus
megapixel count decent (24MP)
screen isn't selfie friendly
62
resolution is good (16MP)
built-in flash
display is selfie friendly
lack of Time Lapse mode
not so great battery power (380 CIPA)
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Landscape Comparison

Landscape photography with Sony A9 II
Landscape photography with Sony A55
86
focusing manually
swap lenses (Sony E mount)
screen is a decent size (3 inch)
image stabilization (Sensor based 5-axis)
megapixel count decent (24MP)
sensor size is large (Full frame)
very good ISO range (51,200)
supports RAW files
environment proof
good battery pack (690 per charge)
has double storage slots
67
has manual focus
switch lenses (Sony/Minolta Alpha mount)
nice screen size (3 inches)
image stabilization (Sensor based)
resolution is good (16 megapixels)
sensor size is nice (APS-C)
exports RAW formats
not so great battery power (380 per charge)
lack of Time Lapse mode
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Vlogging Comparison

Sony A9 II Vlogging features
Sony A55 Vlogging features
36
built-in touchscreen
image stabilization (Sensor based 5-axis)
has face detection autofocus
high quality video (3840 x 2160 resolution)
includes external microphone port
screen isn't selfie friendly
78
display is selfie friendly
image stabilization (Sensor based)
offers face detection focus
high video quality (1920 x 1080 pixels)
comes with external mic support
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Sony A9 II vs Sony A55 Specifications

Detailed spec comparison table for Sony A9 II and Sony A55
 Sony Alpha A9 Mark IISony SLT-A55
General Information
Manufacturer Sony Sony
Model type Sony Alpha A9 Mark II Sony SLT-A55
Class Pro Mirrorless Entry-Level DSLR
Announced 2019-10-03 2010-08-24
Physical type SLR-style mirrorless Compact SLR
Sensor Information
Chip BIONZ X Bionz
Sensor type BSI-CMOS CMOS
Sensor size Full frame APS-C
Sensor dimensions 35.6 x 23.8mm 23.5 x 15.6mm
Sensor surface area 847.3mm² 366.6mm²
Sensor resolution 24 megapixel 16 megapixel
Anti alias filter
Aspect ratio 3:2 3:2 and 16:9
Full resolution 6000 x 4000 4912 x 3264
Max native ISO 51200 12800
Max boosted ISO 204800 25600
Lowest native ISO 100 100
RAW files
Lowest boosted ISO 50 -
Autofocusing
Manual focusing
AF touch
AF continuous
AF single
AF tracking
AF selectice
Center weighted AF
Multi area AF
Live view AF
Face detect focusing
Contract detect focusing
Phase detect focusing
Total focus points 693 15
Cross type focus points - 3
Lens
Lens mount type Sony E Sony/Minolta Alpha
Amount of lenses 121 143
Focal length multiplier 1 1.5
Screen
Type of display Tilting Fully Articulated
Display diagonal 3 inches 3 inches
Display resolution 1,440k dots 921k dots
Selfie friendly
Liveview
Touch function
Viewfinder Information
Viewfinder Electronic Electronic
Viewfinder resolution 3,686k dots 1,150k dots
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.78x 0.73x
Features
Lowest shutter speed 30s 30s
Highest shutter speed 1/8000s 1/4000s
Highest quiet shutter speed 1/32000s -
Continuous shooting rate 20.0 frames per sec 10.0 frames per sec
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Custom WB
Image stabilization
Built-in flash
Flash distance no built-in flash 10.00 m (@ ISO 100)
Flash options Flash off, Autoflash, 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
External flash
AE bracketing
WB bracketing
Highest flash synchronize - 1/160s
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 3840 x 2160 @ 30p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 (60, 29.97 fps), 1440 x 1080 (30fps), 640 x 424 (29.97 fps)
Max video resolution 3840x2160 1920x1080
Video format MPEG-4, AVCHD, 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 proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 678 grams (1.49 lb) 500 grams (1.10 lb)
Dimensions 129 x 96 x 76mm (5.1" x 3.8" x 3.0") 124 x 92 x 85mm (4.9" x 3.6" x 3.3")
DXO scores
DXO All around rating not tested 73
DXO Color Depth rating not tested 23.0
DXO Dynamic range rating not tested 12.4
DXO Low light rating not tested 816
Other
Battery life 690 images 380 images
Style of battery Battery Pack Battery Pack
Battery ID NP-FZ100 NP-FW50
Self timer Yes (2, 5, 10 secs + continuous, 3 or 5 frames) Yes (2 or 10 sec)
Time lapse recording
Storage type Dual SD/SDHC/SDXC slots (UHS-II compatible) SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo
Card slots Two 1
Retail pricing $4,498 $800