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Samsung GX-20 vs Sony A390

Portability
58
Imaging
53
Features
52
Overall
52
Samsung GX-20 front
 
Sony Alpha DSLR-A390 front
Portability
66
Imaging
54
Features
54
Overall
54

Samsung GX-20 vs Sony A390 Key Specs

Samsung GX-20
(Full Review)
  • 15MP - APS-C Sensor
  • 2.7" Fixed Screen
  • ISO 100 - 3200 (Push to 6400)
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF2 Mount
  • 800g - 142 x 101 x 72mm
  • Announced January 2008
  • Replaced the Samsung GX-10
Sony A390
(Full Review)
  • 14MP - APS-C Sensor
  • 2.7" Tilting Screen
  • ISO 100 - 3200
  • Sensor based Image Stabilization
  • No Video
  • Sony/Minolta Alpha Mount
  • 549g - 128 x 97 x 86mm
  • Launched July 2010
  • Older Model is Sony A380
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Samsung GX-20 vs Sony A390 Overview

Here is a complete overview of the Samsung GX-20 and Sony A390, one being a Advanced DSLR and the latter is a Entry-Level DSLR by competitors Samsung and Sony. The resolution of the GX-20 (15MP) and the A390 (14MP) is relatively comparable and both cameras offer the identical sensor measurements (APS-C).

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The GX-20 was announced 3 years before the A390 and that is a fairly serious gap as far as camera tech is concerned. The two cameras feature different body design with the Samsung GX-20 being a Mid-size SLR camera and the Sony A390 being a Compact SLR camera.

Before we go into a step-by-step comparison, here is a simple view of how the GX-20 scores vs the A390 when considering portability, imaging, features and an overall rating.

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Reasons to pick Samsung GX-20 over the Sony A390

 GX-20 A390 

Reasons to pick Sony A390 over the Samsung GX-20

 A390 GX-20 
LaunchedJuly 2010January 2008Fresher by 30 months
Screen typeTiltingFixed Tilting screen

Common features in the Samsung GX-20 and Sony A390

 GX-20 A390 
Manual focus Very precise focus
Screen size2.7"2.7"Same screen measurements
Screen resolution230k230kSame screen resolution
Selfie screen Neither offers selfie screen
Touch screen Neither offers Touch screen

Samsung GX-20 vs Sony A390 Physical Comparison

For anyone who is intending to carry your camera frequently, you need to take into account its weight and proportions. The Samsung GX-20 offers outer measurements of 142mm x 101mm x 72mm (5.6" x 4.0" x 2.8") having a weight of 800 grams (1.76 lbs) whilst the Sony A390 has measurements of 128mm x 97mm x 86mm (5.0" x 3.8" x 3.4") accompanied by a weight of 549 grams (1.21 lbs).

Contrast the Samsung GX-20 and Sony A390 in the latest Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into account, the weight of an Interchangeable Lens Camera will change based on the lens you are utilizing at the time. The following is a front view dimensions comparison of the GX-20 against the A390.

Samsung GX-20 vs Sony A390 size comparison

Using size and weight, the portability rating of the GX-20 and A390 is 58 and 66 respectively.

Samsung GX-20 vs Sony A390 top view buttons comparison

Samsung GX-20 vs Sony A390 Sensor Comparison

In many cases, it's difficult to picture the difference in sensor sizing simply by going through technical specs. The visual here will provide you a much better sense of the sensor sizing in the GX-20 and A390.

As you can tell, both cameras feature the identical sensor size albeit different resolution. You should count on the Samsung GX-20 to show extra detail with its extra 1MP. Higher resolution will enable you to crop pictures way more aggressively. The older GX-20 will be disadvantaged when it comes to sensor innovation.

Samsung GX-20 vs Sony A390 sensor size comparison

Samsung GX-20 vs Sony A390 Screen and ViewFinder

Samsung GX-20 vs Sony A390 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Samsung GX-20 Portrait photography details
Sony A390 Portrait photography details
71
focusing manually
MP count good (15 megapixels)
sensor size is decent (APS-C)
exports RAW files
72
you can focus manually
decent sensor resolution (14MP)
decent sensor size (APS-C)
features face detection focus
exports RAW files
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Street Comparison

Samsung GX-20 Street photography features
Sony A390 Street photography features
65
image stabilization (Sensor based)
sensor size is decent (APS-C)
exports RAW files
environment sealing
no moving screen
76
screen tilts
has image stabilization (Sensor based)
decent sensor size (APS-C)
exports RAW files
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Sports Comparison

Samsung GX-20 Sports photography factors
Sony A390 Sports photography factors
68
image stabilization (Sensor based)
MP count good (15MP)
sensor size is decent (APS-C)
environment sealing
comes with phase detect AF
slow fps (3.0 fps)
60
has image stabilization (Sensor based)
decent sensor resolution (14MP)
decent sensor size (APS-C)
comes with phase detect auto focus
continuous shooting slow (3.0 frames per second)
not so great battery power (230 per charge)
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Travel Comparison

Travel photography with Samsung GX-20
Travel photography with Sony A390
63
environment sealing
MP count good (15 megapixels)
built-in flash
display isn't selfie friendly
53
decent sensor resolution (14 megapixels)
flash built-in
does not have Timelapse mode
not so great battery power (230 shots)
screen isn't selfie friendly
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Landscape Comparison

Samsung GX-20 Landscape photography features
Sony A390 Landscape photography features
70
focusing manually
interchangeable lenses (Pentax KAF2 mount)
image stabilization (Sensor based)
MP count good (15 megapixels)
sensor size is decent (APS-C)
exports RAW files
environment sealing
screen is somewhat small (2.7 inches)
61
you can focus manually
change lenses (Sony/Minolta Alpha mount)
has image stabilization (Sensor based)
decent sensor resolution (14MP)
decent sensor size (APS-C)
exports RAW files
small screen (2.7")
not so great battery power (230 per charge)
does not have Timelapse mode
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Vlogging Comparison

Samsung GX-20 Vlogging advice
Sony A390 Vlogging advice
9
can't shoot video
9
can't record video
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Samsung GX-20 vs Sony A390 Specifications

Detailed spec comparison table for Samsung GX-20 and Sony A390
 Samsung GX-20Sony Alpha DSLR-A390
General Information
Manufacturer Samsung Sony
Model Samsung GX-20 Sony Alpha DSLR-A390
Class Advanced DSLR Entry-Level DSLR
Announced 2008-01-24 2010-07-28
Physical type Mid-size SLR Compact SLR
Sensor Information
Chip - Bionz
Sensor type CMOS CCD
Sensor size APS-C APS-C
Sensor measurements 23.4 x 15.6mm 23.5 x 15.7mm
Sensor surface area 365.0mm² 369.0mm²
Sensor resolution 15 megapixel 14 megapixel
Anti aliasing filter
Aspect ratio - 3:2 and 16:9
Full resolution 4688 x 3120 4592 x 3056
Max native ISO 3200 3200
Max boosted ISO 6400 -
Minimum native ISO 100 100
RAW files
Autofocusing
Focus manually
AF touch
Continuous AF
AF single
AF tracking
AF selectice
Center weighted AF
AF multi area
Live view AF
Face detection AF
Contract detection AF
Phase detection AF
Number of focus points 11 9
Lens
Lens mount Pentax KAF2 Sony/Minolta Alpha
Amount of lenses 151 143
Focal length multiplier 1.5 1.5
Screen
Type of screen Fixed Type Tilting
Screen size 2.7 inch 2.7 inch
Screen resolution 230k dots 230k dots
Selfie friendly
Liveview
Touch capability
Viewfinder Information
Viewfinder type Optical (pentaprism) Optical (pentamirror)
Viewfinder coverage 95 percent 95 percent
Viewfinder magnification 0.64x 0.49x
Features
Lowest shutter speed 30s 30s
Highest shutter speed 1/4000s 1/4000s
Continuous shooting rate 3.0 frames/s 3.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Set WB
Image stabilization
Integrated flash
Flash range 13.00 m (at ISO 100) 10.00 m (at ISO 100)
Flash options Auto, Red-Eye, Slow, Red-Eye Slow, Rear curtain, wireless Auto, On, Off, Red-Eye, Slow Sync, Rear Curtain, Wireless
Hot shoe
AEB
White balance bracketing
Highest flash synchronize 1/180s 1/160s
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Max video resolution None None
Microphone support
Headphone support
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 800g (1.76 lb) 549g (1.21 lb)
Physical dimensions 142 x 101 x 72mm (5.6" x 4.0" x 2.8") 128 x 97 x 86mm (5.0" x 3.8" x 3.4")
DXO scores
DXO All around score 68 66
DXO Color Depth score 23.1 22.5
DXO Dynamic range score 11.2 11.5
DXO Low light score 714 607
Other
Battery life - 230 shots
Type of battery - Battery Pack
Battery model - NP-FH50
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec)
Time lapse shooting
Type of storage SD/MMC/SDHC card SD/ SDHC, Memory Stick Pro Duo
Card slots One One
Cost at launch $850 $500