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Sony T90 vs Sony A55

Portability
96
Imaging
34
Features
26
Overall
30
Sony Cyber-shot DSC-T90 front
 
Sony SLT-A55 front
Portability
67
Imaging
56
Features
80
Overall
65

Sony T90 vs Sony A55 Key Specs

Sony T90
(Full Review)
  • 12MP - 1/2.3" Sensor
  • 3" Fixed Screen
  • ISO 80 - 3200
  • Optical Image Stabilization
  • 1280 x 720 video
  • 35-140mm (F3.5-10.0) lens
  • 148g - 94 x 57 x 15mm
  • Introduced February 2009
Sony A55
(Full Review)
  • 16MP - APS-C Sensor
  • 3" Fully Articulated Display
  • ISO 100 - 12800 (Increase to 25600)
  • Sensor based Image Stabilization
  • 1920 x 1080 video
  • Sony/Minolta Alpha Mount
  • 500g - 124 x 92 x 85mm
  • Launched August 2010
  • New Model is Sony A57
Photography Glossary

Sony T90 vs Sony A55 Overview

Lets look much closer at the Sony T90 vs Sony A55, one being a Ultracompact and the other is a Entry-Level DSLR and they are both manufactured by Sony. There exists a big gap among the sensor resolutions of the T90 (12MP) and A55 (16MP) and the T90 (1/2.3") and A55 (APS-C) feature different sensor dimensions.

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The T90 was brought out 18 months earlier than the A55 making the cameras a generation apart from one another. The two cameras come with different body type with the Sony T90 being a Ultracompact camera and the Sony A55 being a Compact SLR camera.

Before going straight into a detailed comparison, below is a quick overview of how the T90 scores versus the A55 in terms of portability, imaging, features and an overall grade.

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Reasons to pick Sony T90 over the Sony A55

 T90 A55 
Touch friendly display Easily navigate

Reasons to pick Sony A55 over the Sony T90

 A55 T90 
LaunchedAugust 2010February 2009More recent by 18 months
Display typeFully ArticulatedFixed Fully Articulating display
Display resolution921k230kCrisper display (+691k dot)
Selfie screen Easy selfies

Common features in the Sony T90 and Sony A55

 T90 A55 
Manually focus Very exact focusing
Display dimension3"3"Identical display sizing

Sony T90 vs Sony A55 Physical Comparison

If you are planning to lug around your camera regularly, you're going to have to consider its weight and size. The Sony T90 features external dimensions of 94mm x 57mm x 15mm (3.7" x 2.2" x 0.6") along with a weight of 148 grams (0.33 lbs) whilst 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).

Check out the Sony T90 vs Sony A55 in the new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Bear in mind, the weight of an Interchangeable Lens Camera will differ based on the lens you select at that time. Below is the front view sizing comparison of the T90 vs the A55.

Sony T90 vs Sony A55 size comparison

Taking into consideration dimensions and weight, the portability score of the T90 and A55 is 96 and 67 respectively.

Sony T90 vs Sony A55 top view buttons comparison

Sony T90 vs Sony A55 Sensor Comparison

Sometimes, it is hard to visualize the gap in sensor measurements just by viewing specs. The visual underneath might provide you a clearer sense of the sensor dimensions in the T90 and A55.

As you can plainly see, both of these cameras have got different megapixels and different sensor measurements. The T90 due to its smaller sensor is going to make achieving shallow DOF more difficult and the Sony A55 will result in extra detail having its extra 4MP. Greater resolution will also make it easier to crop images much more aggressively. The older T90 will be disadvantaged when it comes to sensor technology.

Sony T90 vs Sony A55 sensor size comparison

Sony T90 vs Sony A55 Screen and ViewFinder

Sony T90 vs Sony A55 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Sony T90 as a Portrait photography camera
Sony A55 as a Portrait photography camera
27
you can focus manually
lack of manual mode
no external flash support
low resolution sensor (12 megapixels)
sensor is tiny (1/2.3")
lack of RAW files
73
focusing manually
MP count decent (16MP)
decent sensor size (APS-C)
includes face detection focusing
exports RAW formats
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Street Comparison

Sony T90 Street photography info
Sony A55 Street photography info
55
built in image stabilization (Optical)
screen does not articulate
sensor is tiny (1/2.3")
lack of RAW files
more heavy than others in class (148g)
77
screen articulates
image stabilization (Sensor based)
decent sensor size (APS-C)
exports RAW formats
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Sports Comparison

Sports photography with Sony T90
Sports photography with Sony A55
25
built in image stabilization (Optical)
low frames per second (2.0 fps)
lack of shutter priority mode
low resolution sensor (12MP)
sensor is tiny (1/2.3")
lack of phase detect autofocus
68
image stabilization (Sensor based)
MP count decent (16MP)
decent sensor size (APS-C)
sensor has phase detect AF
low battery power (380 CIPA)
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Travel Comparison

Sony T90 as a Travel photography camera
Sony A55 as a Travel photography camera
50
built-in flash
missing Timelapse function
more heavy than others in class (148 grams)
low resolution sensor (12 megapixels)
does not offer selfie friendly screen
wide angle not great (35mm)
slow max aperture (f3.5)
62
MP count decent (16MP)
flash built-in
selfie friendly screen
lack of Timelapse mode
low battery power (380 CIPA)
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Landscape Comparison

Sony T90 Landscape photography information
Sony A55 Landscape photography information
36
you can focus manually
screen size is good (3 inch)
built in image stabilization (Optical)
cannot change lenses (fixed lens mount)
wide angle not great (35mm)
slow max aperture (f3.5)
lack of manual mode
low resolution sensor (12 megapixels)
sensor is tiny (1/2.3")
lack of RAW files
missing Timelapse function
67
focusing manually
swap lenses (Sony/Minolta Alpha mount)
screen size is good (3 inches)
image stabilization (Sensor based)
MP count decent (16MP)
decent sensor size (APS-C)
exports RAW formats
low battery power (380 CIPA)
lack of Timelapse mode
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Vlogging Comparison

Sony T90 as a Vlogging camera
Sony A55 as a Vlogging camera
27
touch screen
built in image stabilization (Optical)
wide angle not great (35mm)
slow max aperture (f3.5)
does not offer selfie friendly screen
low video resolution (1280 x 720 pixels)
missing microphone support
more heavy than others in class (148g)
78
selfie friendly screen
image stabilization (Sensor based)
includes face detection focusing
good video quality (1920 x 1080 resolution)
includes external microphone socket
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Sony T90 vs Sony A55 Specifications

Detailed spec comparison table for Sony T90 and Sony A55
 Sony Cyber-shot DSC-T90Sony SLT-A55
General Information
Manufacturer Sony Sony
Model type Sony Cyber-shot DSC-T90 Sony SLT-A55
Category Ultracompact Entry-Level DSLR
Introduced 2009-02-17 2010-08-24
Physical type Ultracompact Compact SLR
Sensor Information
Powered by - Bionz
Sensor type CCD CMOS
Sensor size 1/2.3" APS-C
Sensor measurements 6.17 x 4.55mm 23.5 x 15.6mm
Sensor area 28.1mm² 366.6mm²
Sensor resolution 12MP 16MP
Anti alias filter
Aspect ratio 4:3, 3:2 and 16:9 3:2 and 16:9
Highest resolution 4000 x 3000 4912 x 3264
Highest native ISO 3200 12800
Highest boosted ISO - 25600
Lowest native ISO 80 100
RAW images
Autofocusing
Focus manually
Autofocus touch
Autofocus continuous
Single autofocus
Tracking autofocus
Selective autofocus
Center weighted autofocus
Multi area autofocus
Autofocus live view
Face detection focus
Contract detection focus
Phase detection focus
Total focus points 9 15
Cross type focus points - 3
Lens
Lens support fixed lens Sony/Minolta Alpha
Lens zoom range 35-140mm (4.0x) -
Maximum aperture f/3.5-10.0 -
Number of lenses - 143
Focal length multiplier 5.8 1.5
Screen
Type of screen Fixed Type Fully Articulated
Screen sizing 3" 3"
Screen resolution 230 thousand dots 921 thousand dots
Selfie friendly
Liveview
Touch display
Viewfinder Information
Viewfinder None Electronic
Viewfinder resolution - 1,150 thousand dots
Viewfinder coverage - 100%
Viewfinder magnification - 0.73x
Features
Lowest shutter speed 1 seconds 30 seconds
Highest shutter speed 1/1600 seconds 1/4000 seconds
Continuous shooting rate 2.0fps 10.0fps
Shutter priority
Aperture priority
Expose Manually
Exposure compensation - Yes
Set white balance
Image stabilization
Inbuilt flash
Flash distance 2.90 m (Auto ISO) 10.00 m (@ ISO 100)
Flash settings Auto, On, Off, Red-Eye reduction, Slow Sync Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless
Hot shoe
Auto exposure bracketing
WB bracketing
Highest flash synchronize - 1/160 seconds
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions 1280 x 720 (30 fps) 640 x 480 (30 fps) 1920 x 1080 (60, 29.97 fps), 1440 x 1080 (30fps), 640 x 424 (29.97 fps)
Highest video resolution 1280x720 1920x1080
Video data format Motion JPEG MPEG-4, AVCHD, H.264
Microphone port
Headphone port
Connectivity
Wireless None Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None BuiltIn
Physical
Environmental sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 148 gr (0.33 lbs) 500 gr (1.10 lbs)
Dimensions 94 x 57 x 15mm (3.7" x 2.2" x 0.6") 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 - 380 images
Battery type - Battery Pack
Battery ID - NP-FW50
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec)
Time lapse recording
Type of storage Memory Stick Duo / Pro Duo, Internal SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo
Card slots Single Single
Launch cost $259 $800