Sigma DP1x vs Sony A550
88 Imaging
44 Features
27 Overall
37


63 Imaging
53 Features
65 Overall
57
Sigma DP1x vs Sony A550 Key Specs
(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
(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

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).

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.

Sigma DP1x vs Sony A550 Gallery
This is a preview of the gallery images for Sigma DP1x and Sony Alpha DSLR-A550. The whole galleries are viewable at Sigma DP1x Gallery and Sony A550 Gallery.
Reasons to pick Sigma DP1x over the Sony A550
DP1x | A550 |
---|
Reasons to pick Sony A550 over the Sigma DP1x
A550 | DP1x | |||
---|---|---|---|---|
Screen type | Tilting | ![]() | Fixed | Tilting screen |
Screen size | 3" | ![]() | 2.5" | Bigger screen (+0.5") |
Screen resolution | 922k | ![]() | 230k | Clearer screen (+692k dot) |
Common features in the Sigma DP1x and Sony A550
DP1x | A550 | |||
---|---|---|---|---|
Introduced | February 2010 | ![]() | December 2009 | Similar 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.
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.

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

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 Screen and ViewFinder


Photography Type Scores
Portrait Comparison

Street Comparison

Sports Comparison

Travel Comparison

Landscape Comparison

Vlogging Comparison

Sigma DP1x vs Sony A550 Specifications
Sigma DP1x | Sony 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 |