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Sigma SD9 vs Sony A550

Portability
54
Imaging
38
Features
27
Overall
33
Sigma SD9 front
 
Sony Alpha DSLR-A550 front
Portability
63
Imaging
53
Features
65
Overall
57

Sigma SD9 vs Sony A550 Key Specs

Sigma SD9
(Full Review)
  • 3MP - APS-C Sensor
  • 1.8" Fixed Display
  • ISO 100 - 400
  • 1/6000s Maximum Shutter
  • No Video
  • Sigma SA Mount
  • 950g - 152 x 120 x 79mm
  • Launched November 2002
  • Later Model is Sigma SD10
Sony A550
(Full Review)
  • 14MP - APS-C Sensor
  • 3" Tilting Display
  • ISO 200 - 12800
  • Sensor based Image Stabilization
  • No Video
  • Sony/Minolta Alpha Mount
  • 632g - 137 x 104 x 84mm
  • Introduced December 2009
  • Replaced the Sony A100
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Sigma SD9 vs Sony A550 Overview

Below is a extended overview of the Sigma SD9 vs Sony A550, former being a Advanced DSLR while the other is a Entry-Level DSLR by rivals Sigma and Sony. There is a noticeable difference among the resolutions of the SD9 (3MP) and A550 (14MP) but they enjoy the same exact sensor dimensions (APS-C).

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The SD9 was brought out 8 years earlier than the A550 and that is a fairly sizable difference as far as camera tech is concerned. The two cameras offer different body type with the Sigma SD9 being a Mid-size SLR camera and the Sony A550 being a Compact SLR camera.

Before delving in to a full comparison, below is a short summary of how the SD9 grades against the A550 with regards to portability, imaging, features and an overall grade.

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Reasons to pick Sigma SD9 over the Sony A550

 SD9 A550 

Reasons to pick Sony A550 over the Sigma SD9

 A550 SD9 
IntroducedDecember 2009November 2002More recent by 85 months
Display typeTiltingFixed Tilting display
Display sizing3"1.8"Larger display (+1.2")
Display resolution922k130kClearer display (+792k dot)

Common features in the Sigma SD9 and Sony A550

 SD9 A550 
Focus manually Very exact focusing
Selfie screen Lack of selfie screen
Touch friendly display Lack of Touch friendly display

Sigma SD9 vs Sony A550 Physical Comparison

In case you're looking to lug around your camera regularly, you'll have to think about its weight and dimensions. The Sigma SD9 has got outside measurements of 152mm x 120mm x 79mm (6.0" x 4.7" x 3.1") accompanied by a weight of 950 grams (2.09 lbs) and the Sony A550 has dimensions of 137mm x 104mm x 84mm (5.4" x 4.1" x 3.3") and a weight of 632 grams (1.39 lbs).

Check out the Sigma SD9 vs Sony A550 in our newest Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Bear in mind, the weight of an ILC will vary dependant on the lens you are utilizing during that time. Below is the front view sizing comparison of the SD9 compared to the A550.

Sigma SD9 vs Sony A550 size comparison

Taking into account size and weight, the portability score of the SD9 and A550 is 54 and 63 respectively.

Sigma SD9 vs Sony A550 top view buttons comparison

Sigma SD9 vs Sony A550 Sensor Comparison

Usually, it's tough to envision the gap in sensor measurements simply by researching a spec sheet. The photograph below will help offer you a much better sense of the sensor sizing in the SD9 and A550.

Clearly, both of the cameras enjoy the same exact sensor sizing but not the same resolution. You can anticipate the Sony A550 to provide you with extra detail having its extra 11 Megapixels. Greater resolution will enable you to crop pics far more aggressively. The older SD9 will be behind when it comes to sensor technology.

Sigma SD9 vs Sony A550 sensor size comparison

Sigma SD9 vs Sony A550 Screen and ViewFinder

Sigma SD9 vs Sony A550 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Sigma SD9 Portrait photography features
Sony A550 Portrait photography features
46
manual focus
decent sensor size (APS-C)
delivers RAW files
no liveview feature
low resolution sensor (3MP)
71
has manual focus
megapixel count good (14MP)
sensor size is decent (APS-C)
comes with face detect focus
supports RAW files
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Street Comparison

Sigma SD9 Street photography factors
Sony A550 Street photography factors
43
decent sensor size (APS-C)
delivers RAW files
no articulating screen
no image stabilization
heavier than competition (950 grams)
max ISO too low (400)
74
has a tilting screen
image stabilization (Sensor based)
sensor size is decent (APS-C)
supports RAW files
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Sports Comparison

Sigma SD9 as a Sports photography camera
Sony A550 as a Sports photography camera
35
high shutter speed (1/6,000s)
decent sensor size (APS-C)
no liveview feature
no image stabilization
low resolution sensor (3 megapixels)
has no phase detect autofocus
66
image stabilization (Sensor based)
megapixel count good (14MP)
sensor size is decent (APS-C)
has phase detect auto focus
low battery pack (480 shots)
Photography Glossary

Travel Comparison

Travel photography with Sigma SD9
Travel photography with Sony A550
29
does not have Time Lapse recording
heavier than competition (950g)
low resolution sensor (3 megapixels)
does not posses selfie friendly screen
51
megapixel count good (14MP)
flash built-in
does not have Timelapse mode
low battery pack (480 per charge)
display isn't selfie friendly
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Landscape Comparison

Sigma SD9 Landscape photography details
Sony A550 Landscape photography details
40
manual focus
swap lenses (Sigma SA mount)
decent sensor size (APS-C)
delivers RAW files
screen is small (1.8")
no liveview feature
no image stabilization
low resolution sensor (3 megapixels)
max ISO too low (400)
does not have Time Lapse recording
66
has manual focus
switch lenses (Sony/Minolta Alpha mount)
good sized screen (3 inches)
image stabilization (Sensor based)
megapixel count good (14MP)
sensor size is decent (APS-C)
supports RAW files
low battery pack (480 per charge)
does not have Timelapse mode
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Vlogging Comparison

Sigma SD9 Vlogging info
Sony A550 Vlogging info
9
can't record video
9
no video shooting
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Sigma SD9 vs Sony A550 Specifications

Detailed spec comparison table for Sigma SD9 and Sony A550
 Sigma SD9Sony Alpha DSLR-A550
General Information
Manufacturer Sigma Sony
Model Sigma SD9 Sony Alpha DSLR-A550
Category Advanced DSLR Entry-Level DSLR
Launched 2002-11-26 2009-12-09
Physical type Mid-size SLR Compact SLR
Sensor Information
Processor - Bionz
Sensor type CMOS (Foveon X3) CMOS
Sensor size APS-C APS-C
Sensor measurements 20.7 x 13.8mm 23.4 x 15.6mm
Sensor area 285.7mm² 365.0mm²
Sensor resolution 3 megapixel 14 megapixel
Anti aliasing filter
Aspect ratio 3:2 3:2 and 16:9
Highest Possible resolution 2268 x 1512 4592 x 3056
Maximum native ISO 400 12800
Minimum native ISO 100 200
RAW images
Autofocusing
Manual focus
Touch focus
AF continuous
Single AF
Tracking AF
Selective AF
AF center weighted
Multi area AF
AF live view
Face detect focusing
Contract detect focusing
Phase detect focusing
Number of focus points - 9
Lens
Lens mounting type Sigma SA Sony/Minolta Alpha
Available lenses 76 143
Crop factor 1.7 1.5
Screen
Display type Fixed Type Tilting
Display diagonal 1.8" 3"
Resolution of display 130k dots 922k dots
Selfie friendly
Liveview
Touch function
Viewfinder Information
Viewfinder Optical (pentaprism) Optical (pentamirror)
Viewfinder coverage 98 percent 95 percent
Viewfinder magnification 0.77x 0.53x
Features
Min shutter speed 30 secs 30 secs
Max shutter speed 1/6000 secs 1/4000 secs
Continuous shutter rate - 7.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Custom WB
Image stabilization
Integrated flash
Flash range no built-in flash 12.00 m
Flash settings - Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless
Hot shoe
AE bracketing
WB bracketing
Max flash synchronize 1/180 secs 1/160 secs
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Maximum video resolution None None
Microphone support
Headphone support
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 1.0 (1.5 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 950g (2.09 pounds) 632g (1.39 pounds)
Dimensions 152 x 120 x 79mm (6.0" x 4.7" x 3.1") 137 x 104 x 84mm (5.4" x 4.1" x 3.3")
DXO scores
DXO Overall score not tested 66
DXO Color Depth score not tested 21.9
DXO Dynamic range score not tested 11.8
DXO Low light score not tested 807
Other
Battery life - 480 shots
Style of battery - Battery Pack
Battery model - NP-FM500H
Self timer Yes (10 sec) Yes (2 or 10 sec)
Time lapse feature
Type of storage Compact Flash Type I or II SD/ SDHC, Memory Stick Pro Duo/ Pro-HG Duo
Card slots One One
Retail price $3,001 $749