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Sigma DP1x vs Sony A550

Portability
88
Imaging
44
Features
27
Overall
37
Sigma DP1x front
 
Sony Alpha DSLR-A550 front
Portability
63
Imaging
53
Features
65
Overall
57

Sigma DP1x vs Sony A550 Key Specs

Sigma DP1x
(Full Review)
  • 5MP - APS-C Sensor
  • 2.5" Fixed Display
  • ISO 100 - 3200
  • 320 x 240 video
  • 28mm (F4.0) lens
  • 250g - 113 x 60 x 50mm
  • Launched February 2010
  • Old Model is Sigma DP1s
Sony A550
(Full Review)
  • 14MP - APS-C Sensor
  • 3" Tilting Screen
  • ISO 200 - 12800
  • Sensor based Image Stabilization
  • No Video
  • Sony/Minolta Alpha Mount
  • 632g - 137 x 104 x 84mm
  • Introduced December 2009
  • Earlier Model is Sony A100
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Sigma DP1x vs Sony A550 Overview

Here, we will be analyzing the Sigma DP1x vs Sony A550, one being a Large Sensor Compact and the latter is a Entry-Level DSLR by competitors Sigma and Sony. There is a significant difference between the image resolutions of the DP1x (5MP) and A550 (14MP) but both cameras posses the identical sensor size (APS-C).

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The DP1x was announced 3 months later than the A550 and they are both of a similar generation. Both of these cameras feature different body design with the Sigma DP1x being a Large Sensor Compact camera and the Sony A550 being a Compact SLR camera.

Before we go straight to a in depth comparison, here is a quick view of how the DP1x scores versus the A550 in the way of portability, imaging, features and an overall grade.

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Reasons to pick Sigma DP1x over the Sony A550

 DP1x A550 

Reasons to pick Sony A550 over the Sigma DP1x

 A550 DP1x 
Screen typeTiltingFixed Tilting screen
Screen size3"2.5"Bigger screen (+0.5")
Screen resolution922k230kClearer screen (+692k dot)

Common features in the Sigma DP1x and Sony A550

 DP1x A550 
IntroducedFebruary 2010December 2009Similar generation
Manually focus Very precise focus
Selfie screen Lacking selfie screen
Touch screen Neither offers Touch screen

Sigma DP1x vs Sony A550 Physical Comparison

When you are intending to lug around your camera, you're going to have to factor its weight and size. The Sigma DP1x offers physical measurements of 113mm x 60mm x 50mm (4.4" x 2.4" x 2.0") with a weight of 250 grams (0.55 lbs) whilst the Sony A550 has specifications of 137mm x 104mm x 84mm (5.4" x 4.1" x 3.3") accompanied by a weight of 632 grams (1.39 lbs).

See the Sigma DP1x vs Sony A550 in the latest Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an Interchangeable Lens Camera will differ based on the lens you are using at the time. Following is a front view overall size comparison of the DP1x compared to the A550.

Sigma DP1x vs Sony A550 size comparison

Taking into account size and weight, the portability grade of the DP1x and A550 is 88 and 63 respectively.

Sigma DP1x vs Sony A550 top view buttons comparison

Sigma DP1x vs Sony A550 Sensor Comparison

Generally, it's difficult to envision the contrast between sensor measurements simply by going over specifications. The visual below will help give you a more clear sense of the sensor measurements in the DP1x and A550.

To sum up, each of the cameras come with the identical sensor size albeit not the same megapixels. You should expect the Sony A550 to deliver greater detail with its extra 9 Megapixels. Higher resolution will enable you to crop photographs a good deal more aggressively.

Sigma DP1x vs Sony A550 sensor size comparison

Sigma DP1x vs Sony A550 Screen and ViewFinder

Sigma DP1x vs Sony A550 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Sigma DP1x as a Portrait photography camera
Sony A550 as a Portrait photography camera
56
focusing manually
good sensor size (APS-C)
supports RAW formats
low resolution sensor (5MP)
71
focusing manually
good megapixels (14MP)
decent sensor size (APS-C)
includes face detection focus
supports RAW files
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Street Comparison

Sigma DP1x Street photography details
Sony A550 Street photography details
68
good sensor size (APS-C)
supports RAW formats
lighter than competitors (250g)
no articulating screen
no image stabilization
74
tilting screen
has image stabilization (Sensor based)
decent sensor size (APS-C)
supports RAW files
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Sports Comparison

Sigma DP1x as a Sports photography camera
Sony A550 as a Sports photography camera
32
good sensor size (APS-C)
focal length is fixed (28mm)
no image stabilization
low resolution sensor (5MP)
lack of phase detect AF
66
has image stabilization (Sensor based)
good megapixels (14 megapixels)
decent sensor size (APS-C)
has phase detect auto focus
low battery pack (480 CIPA)
Photography Glossary

Travel Comparison

Sigma DP1x Travel photography highlights
Sony A550 Travel photography highlights
57
lighter than competitors (250g)
has built in flash
no Time Lapse function
low resolution sensor (5MP)
screen is not selfie friendly
slow maximum aperture (f4.0)
51
good megapixels (14 megapixels)
has built in flash
missing Timelapse recording
low battery pack (480 shots)
does not offer selfie friendly display
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Landscape Comparison

Sigma DP1x as a Landscape photography camera
Sony A550 as a Landscape photography camera
41
focusing manually
good sensor size (APS-C)
supports RAW formats
can't change lenses (fixed lens mount)
focal length is fixed (28mm)
slow maximum aperture (f4.0)
screen is small (2.5 inches)
no image stabilization
low resolution sensor (5 megapixels)
no Time Lapse function
66
focusing manually
switch lenses (Sony/Minolta Alpha mount)
nice screen size (3 inch)
has image stabilization (Sensor based)
good megapixels (14MP)
decent sensor size (APS-C)
supports RAW files
low battery pack (480 shots)
missing Timelapse recording
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Vlogging Comparison

Vlogging with Sigma DP1x
Vlogging with Sony A550
25
lighter than competitors (250 grams)
slow maximum aperture (f4.0)
screen is not selfie friendly
no image stabilization
video res low (320 x 240 resolution)
no mic port
9
no video
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Sigma DP1x vs Sony A550 Specifications

Detailed spec comparison table for Sigma DP1x and Sony A550
 Sigma DP1xSony Alpha DSLR-A550
General Information
Brand Sigma Sony
Model Sigma DP1x Sony Alpha DSLR-A550
Type Large Sensor Compact Entry-Level DSLR
Launched 2010-02-20 2009-12-09
Physical type Large Sensor Compact Compact SLR
Sensor Information
Chip True II 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 5 megapixel 14 megapixel
Anti aliasing filter
Aspect ratio 3:2 3:2 and 16:9
Peak resolution 2640 x 1760 4592 x 3056
Highest native ISO 3200 12800
Min native ISO 100 200
RAW data
Autofocusing
Manual focus
Touch focus
Autofocus continuous
Single autofocus
Tracking autofocus
Autofocus selectice
Autofocus center weighted
Multi area autofocus
Live view autofocus
Face detect autofocus
Contract detect autofocus
Phase detect autofocus
Number of focus points - 9
Lens
Lens mounting type fixed lens Sony/Minolta Alpha
Lens focal range 28mm (1x) -
Highest aperture f/4.0 -
Amount of lenses - 143
Crop factor 1.7 1.5
Screen
Type of display Fixed Type Tilting
Display size 2.5" 3"
Display resolution 230 thousand dots 922 thousand dots
Selfie friendly
Liveview
Touch friendly
Viewfinder Information
Viewfinder None Optical (pentamirror)
Viewfinder coverage - 95%
Viewfinder magnification - 0.53x
Features
Min shutter speed 30 seconds 30 seconds
Max shutter speed 1/4000 seconds 1/4000 seconds
Continuous shutter rate - 7.0fps
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Set white balance
Image stabilization
Inbuilt flash
Flash range - 12.00 m
Flash modes - 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 exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 320 x 240 -
Highest video resolution 320x240 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 250 grams (0.55 pounds) 632 grams (1.39 pounds)
Physical dimensions 113 x 60 x 50mm (4.4" x 2.4" x 2.0") 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 pictures
Form of battery - Battery Pack
Battery model - NP-FM500H
Self timer Yes (10 sec) Yes (2 or 10 sec)
Time lapse recording
Storage type SD/MMC card SD/ SDHC, Memory Stick Pro Duo/ Pro-HG Duo
Card slots Single Single
Retail pricing $574 $749