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Samsung GX-20 vs Sigma SD15

Portability
58
Imaging
54
Features
52
Overall
53
Samsung GX-20 front
 
Sigma SD15 front
Portability
59
Imaging
44
Features
45
Overall
44

Samsung GX-20 vs Sigma SD15 Key Specs

Samsung GX-20
(Full Review)
  • 15MP - APS-C Sensor
  • 2.7" Fixed Display
  • ISO 100 - 3200 (Bump to 6400)
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF2 Mount
  • 800g - 142 x 101 x 72mm
  • Launched January 2008
  • Old Model is Samsung GX-10
Sigma SD15
(Full Review)
  • 5MP - APS-C Sensor
  • 3" Fixed Screen
  • ISO 100 - 1600 (Boost to 3200)
  • No Video
  • Sigma SA Mount
  • 750g - 144 x 107 x 81mm
  • Introduced February 2010
  • Earlier Model is Sigma SD14
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Samsung GX-20 vs Sigma SD15 Overview

Lets look closer at the Samsung GX-20 vs Sigma SD15, both Advanced DSLR digital cameras by brands Samsung and Sigma. There is a big difference between the image resolutions of the GX-20 (15MP) and SD15 (5MP) but they come with the exact same sensor sizing (APS-C).

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The GX-20 was unveiled 3 years before the SD15 and that is quite a big gap as far as tech is concerned. Both of these cameras come with the identical body type (Mid-size SLR).

Before going through a in-depth comparison, below is a short summation of how the GX-20 grades vs the SD15 in the way of portability, imaging, features and an overall grade.

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Reasons to pick Samsung GX-20 over the Sigma SD15

 GX-20 SD15 

Reasons to pick Sigma SD15 over the Samsung GX-20

 SD15 GX-20 
IntroducedFebruary 2010January 2008More recent by 25 months
Screen dimension3"2.7"Bigger screen (+0.3")
Screen resolution460k230kCrisper screen (+230k dot)

Common features in the Samsung GX-20 and Sigma SD15

 GX-20 SD15 
Manually focus Dial exact focus
Screen typeFixed Fixed Fixed screen
Selfie screen Lack of selfie screen
Touch screen Lack of Touch screen

Samsung GX-20 vs Sigma SD15 Physical Comparison

If you are aiming to lug around your camera regularly, you need to think about its weight and dimensions. The Samsung GX-20 comes with physical dimensions of 142mm x 101mm x 72mm (5.6" x 4.0" x 2.8") accompanied by a weight of 800 grams (1.76 lbs) and the Sigma SD15 has dimensions of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") accompanied by a weight of 750 grams (1.65 lbs).

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Don't forget, the weight of an Interchangeable Lens Camera will differ based on the lens you use at the time. Following is the front view physical size comparison of the GX-20 compared to the SD15.

Samsung GX-20 vs Sigma SD15 size comparison

Considering size and weight, the portability score of the GX-20 and SD15 is 58 and 59 respectively.

Samsung GX-20 vs Sigma SD15 top view buttons comparison

Samsung GX-20 vs Sigma SD15 Sensor Comparison

Often, its tough to visualise the gap between sensor measurements purely by checking specifications. The visual below will help give you a more clear sense of the sensor sizes in the GX-20 and SD15.

To sum up, each of the cameras have got the exact same sensor measurements albeit not the same resolution. You should count on the Samsung GX-20 to resolve extra detail having an extra 10MP. Higher resolution will make it easier to crop pictures much more aggressively. The older GX-20 is going to be disadvantaged with regard to sensor innovation.

Samsung GX-20 vs Sigma SD15 sensor size comparison

Samsung GX-20 vs Sigma SD15 Screen and ViewFinder

Samsung GX-20 vs Sigma SD15 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with Samsung GX-20
Portrait photography with Sigma SD15
72
has manual focus
MP count decent (15MP)
sensor size is good (APS-C)
delivers RAW files
50
you can focus manually
decent sensor size (APS-C)
saves RAW files
no liveview feature
MP count low (5MP)
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Street Comparison

Samsung GX-20 Street photography features
Sigma SD15 Street photography features
65
built in image stabilization (Sensor based)
sensor size is good (APS-C)
delivers RAW files
weather proof
screen does not articulate
52
decent sensor size (APS-C)
saves RAW files
screen does not articulate
does not have image stabilization
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Sports Comparison

Samsung GX-20 Sports photography advice
Sigma SD15 Sports photography advice
68
built in image stabilization (Sensor based)
MP count decent (15MP)
sensor size is good (APS-C)
weather proof
comes with phase detect autofocus
painfully slow continuous shooting (3.0 fps)
38
decent sensor size (APS-C)
has phase detect auto focus
no liveview feature
max fps low (3.0 fps)
does not have image stabilization
MP count low (5 megapixels)
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Travel Comparison

Travel photography with Samsung GX-20
Travel photography with Sigma SD15
64
weather proof
MP count decent (15 megapixels)
has built in flash
screen isn't selfie friendly
42
has built in flash
doesn't have Timelapse recording
MP count low (5MP)
doesn't feature selfie friendly display
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Landscape Comparison

Samsung GX-20 Landscape photography factors
Sigma SD15 Landscape photography factors
71
has manual focus
swap lenses (Pentax KAF2 mount)
built in image stabilization (Sensor based)
MP count decent (15 megapixels)
sensor size is good (APS-C)
delivers RAW files
weather proof
screen is small (2.7 inches)
51
you can focus manually
switch lenses (Sigma SA mount)
screen size is good (3 inches)
decent sensor size (APS-C)
saves RAW files
no liveview feature
does not have image stabilization
MP count low (5MP)
doesn't have Timelapse recording
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Vlogging Comparison

Samsung GX-20 Vlogging information
Sigma SD15 Vlogging information
9
no video
9
can't record video
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Samsung GX-20 vs Sigma SD15 Specifications

Detailed spec comparison table for Samsung GX-20 and Sigma SD15
 Samsung GX-20Sigma SD15
General Information
Company Samsung Sigma
Model Samsung GX-20 Sigma SD15
Class Advanced DSLR Advanced DSLR
Launched 2008-01-24 2010-02-20
Body design Mid-size SLR Mid-size SLR
Sensor Information
Processor Chip - True II
Sensor type CMOS CMOS (Foveon X3)
Sensor size APS-C APS-C
Sensor measurements 23.4 x 15.6mm 20.7 x 13.8mm
Sensor area 365.0mm² 285.7mm²
Sensor resolution 15 megapixel 5 megapixel
Anti aliasing filter
Aspect ratio - 3:2
Full resolution 4688 x 3120 2640 x 1760
Max native ISO 3200 1600
Max boosted ISO 6400 3200
Minimum native ISO 100 100
RAW files
Minimum boosted ISO - 50
Autofocusing
Manual focus
AF touch
Continuous AF
Single AF
AF tracking
Selective AF
Center weighted AF
AF multi area
AF live view
Face detect focusing
Contract detect focusing
Phase detect focusing
Number of focus points 11 -
Lens
Lens mounting type Pentax KAF2 Sigma SA
Total lenses 151 76
Focal length multiplier 1.5 1.7
Screen
Range of display Fixed Type Fixed Type
Display sizing 2.7 inches 3 inches
Display resolution 230k dot 460k dot
Selfie friendly
Liveview
Touch display
Viewfinder Information
Viewfinder Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 95 percent 96 percent
Viewfinder magnification 0.64x 0.6x
Features
Slowest shutter speed 30 secs 30 secs
Maximum shutter speed 1/4000 secs 1/4000 secs
Continuous shooting speed 3.0fps 3.0fps
Shutter priority
Aperture priority
Manual exposure
Exposure compensation Yes Yes
Custom WB
Image stabilization
Integrated flash
Flash range 13.00 m (at ISO 100) -
Flash modes Auto, Red-Eye, Slow, Red-Eye Slow, Rear curtain, wireless -
External flash
Auto exposure bracketing
White balance bracketing
Maximum flash sync 1/180 secs 1/180 secs
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Max video resolution None None
Microphone input
Headphone input
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 seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 800g (1.76 lb) 750g (1.65 lb)
Dimensions 142 x 101 x 72mm (5.6" x 4.0" x 2.8") 144 x 107 x 81mm (5.7" x 4.2" x 3.2")
DXO scores
DXO All around score 68 not tested
DXO Color Depth score 23.1 not tested
DXO Dynamic range score 11.2 not tested
DXO Low light score 714 not tested
Other
Self timer Yes (2 or 10 sec) Yes (10 sec)
Time lapse recording
Type of storage SD/MMC/SDHC card SD/SDHC card
Storage slots Single Single
Retail pricing $850 $1,500