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Pentax K-3 III vs Samsung GX-1S

Portability
58
Imaging
71
Features
86
Overall
77
Pentax K-3 Mark III front
 
Samsung GX-1S front
Portability
68
Imaging
44
Features
36
Overall
40

Pentax K-3 III vs Samsung GX-1S Key Specs

Pentax K-3 III
(Full Review)
  • 26MP - APS-C Sensor
  • 3.2" Fixed Display
  • ISO 100 - 1600000
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Pentax KAF2 Mount
  • 820g - 135 x 104 x 74mm
  • Announced March 2021
Samsung GX-1S
(Full Review)
  • 6MP - APS-C Sensor
  • 2.5" Fixed Screen
  • ISO 200 - 3200
  • No Video
  • Pentax KAF Mount
  • 605g - 125 x 93 x 66mm
  • Launched January 2006
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Pentax K-3 III vs Samsung GX-1S Overview

Lets take a more detailed look at the Pentax K-3 III and Samsung GX-1S, both Advanced DSLR cameras by companies Pentax and Samsung. There is a significant difference among the sensor resolutions of the K-3 III (26MP) and GX-1S (6MP) but both cameras offer the same sensor size (APS-C).

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The K-3 III was launched 15 years later than the GX-1S and that is a fairly sizable gap as far as camera tech is concerned. Each of these cameras have the same body design (Mid-size SLR).

Before going into a more detailed comparison, here is a brief overview of how the K-3 III scores vs the GX-1S with respect to portability, imaging, features and an overall grade.

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Reasons to pick Pentax K-3 III over the Samsung GX-1S

 K-3 III GX-1S 
LaunchedMarch 2021January 2006More recent by 186 months
Screen dimensions3.2"2.5"Bigger screen (+0.7")
Screen resolution1620k210kSharper screen (+1410k dot)
Touch screen Quickly navigate

Reasons to pick Samsung GX-1S over the Pentax K-3 III

 GX-1S K-3 III 

Common features in the Pentax K-3 III and Samsung GX-1S

 K-3 III GX-1S 
Manual focus Dial accurate focusing
Screen typeFixed Fixed Fixed screen
Selfie screen Neither features selfie screen

Pentax K-3 III vs Samsung GX-1S Physical Comparison

For those who are aiming to lug around your camera often, you're going to have to think about its weight and volume. The Pentax K-3 III enjoys outside dimensions of 135mm x 104mm x 74mm (5.3" x 4.1" x 2.9") and a weight of 820 grams (1.81 lbs) and the Samsung GX-1S has sizing of 125mm x 93mm x 66mm (4.9" x 3.7" x 2.6") along with a weight of 605 grams (1.33 lbs).

Take a look at the Pentax K-3 III and Samsung GX-1S in the new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Keep in mind, the weight of an Interchangeable Lens Camera will change depending on the lens you have chosen at that time. Here is a front view size comparison of the K-3 III and the GX-1S.

Pentax K-3 III vs Samsung GX-1S size comparison

Taking into consideration size and weight, the portability score of the K-3 III and GX-1S is 58 and 68 respectively.

Pentax K-3 III vs Samsung GX-1S top view buttons comparison

Pentax K-3 III vs Samsung GX-1S Sensor Comparison

Often, it's difficult to visualise the difference in sensor measurements merely by checking out specifications. The visual here might offer you a far better sense of the sensor dimensions in the K-3 III and GX-1S.

Plainly, each of the cameras have the same sensor dimensions albeit not the same megapixels. You should expect the Pentax K-3 III to show extra detail utilizing its extra 20MP. Higher resolution will help you crop shots a bit more aggressively. The more recent K-3 III is going to have an edge with regard to sensor tech.

Pentax K-3 III vs Samsung GX-1S sensor size comparison

Pentax K-3 III vs Samsung GX-1S Screen and ViewFinder

Pentax K-3 III vs Samsung GX-1S Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-3 III Portrait photography details
Samsung GX-1S Portrait photography details
82
has manual focus
MP count amazing (26MP)
sensor size is nice (APS-C)
comes with face detection autofocus
exports RAW formats
50
you can focus manually
decent sensor size (APS-C)
exports RAW files
doesn't have liveview
megapixel count low (6 megapixels)
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Street Comparison

Pentax K-3 III Street photography advice
Samsung GX-1S Street photography advice
70
built in image stabilization (Sensor based)
sensor size is nice (APS-C)
exports RAW formats
features touch to focus
environment proof
above average high ISO (1,600,000)
no articulating screen
60
decent sensor size (APS-C)
exports RAW files
lighter than others in class (605 grams)
no articulating screen
no image stabilization
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Sports Comparison

Sports photography with Pentax K-3 III
Sports photography with Samsung GX-1S
79
max shutter speed is good (1/8,000s)
built in image stabilization (Sensor based)
MP count amazing (26MP)
sensor size is nice (APS-C)
comes with tracking autofocus
environment proof
supports phase detect autofocus
low battery power (800 per charge)
38
decent sensor size (APS-C)
supports phase detect AF
doesn't have liveview
slow frames per second (3.0 frames per second)
no image stabilization
megapixel count low (6 megapixels)
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Travel Comparison

Pentax K-3 III Travel photography info
Samsung GX-1S Travel photography info
64
environment proof
supports bluetooth
features touch to focus
MP count amazing (26 megapixels)
low battery power (800 CIPA)
doesn't have a selfie friendly screen
52
lighter than others in class (605 grams)
built-in flash
missing Time Lapse recording
megapixel count low (6 megapixels)
doesn't have a selfie friendly display
Photography Glossary

Landscape Comparison

Landscape photography with Pentax K-3 III
Landscape photography with Samsung GX-1S
80
has manual focus
swap lenses (Pentax KAF2 mount)
decent sized screen (3.2 inches)
built in image stabilization (Sensor based)
MP count amazing (26MP)
sensor size is nice (APS-C)
no low pass filter
above average high ISO (1,600,000)
exports RAW formats
environment proof
two card slots
low battery power (800 per charge)
46
you can focus manually
switch lenses (Pentax KAF mount)
decent sensor size (APS-C)
exports RAW files
screen is small (2.5 inches)
doesn't have liveview
no image stabilization
megapixel count low (6 megapixels)
missing Time Lapse recording
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Vlogging Comparison

Vlogging with Pentax K-3 III
Vlogging with Samsung GX-1S
35
touchscreen
built in image stabilization (Sensor based)
comes with face detection autofocus
high video quality (3840 x 2160 resolution)
comes with external microphone socket
doesn't have a selfie friendly screen
9
can't shoot video
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Pentax K-3 III vs Samsung GX-1S Specifications

Detailed spec comparison table for Pentax K-3 III and Samsung GX-1S
 Pentax K-3 Mark IIISamsung GX-1S
General Information
Make Pentax Samsung
Model Pentax K-3 Mark III Samsung GX-1S
Type Advanced DSLR Advanced DSLR
Announced 2021-03-31 2006-01-16
Physical type Mid-size SLR Mid-size SLR
Sensor Information
Sensor type CMOS CCD
Sensor size APS-C APS-C
Sensor dimensions 23 x 15.5mm 23.5 x 15.7mm
Sensor area 356.5mm² 369.0mm²
Sensor resolution 26 megapixel 6 megapixel
Anti aliasing filter
Aspect ratio 3:2 3:2
Highest resolution 6192 x 4128 3008 x 2008
Highest native ISO 1600000 3200
Lowest native ISO 100 200
RAW format
Autofocusing
Manual focus
AF touch
Continuous AF
Single AF
AF tracking
Selective AF
Center weighted AF
AF multi area
AF live view
Face detect AF
Contract detect AF
Phase detect AF
Number of focus points 101 11
Cross focus points 25 -
Lens
Lens mount Pentax KAF2 Pentax KAF
Total lenses 156 151
Focal length multiplier 1.6 1.5
Screen
Type of display Fixed Type Fixed Type
Display sizing 3.2 inch 2.5 inch
Display resolution 1,620k dots 210k dots
Selfie friendly
Liveview
Touch functionality
Viewfinder Information
Viewfinder type Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 100 percent 95 percent
Viewfinder magnification 0.7x 0.64x
Features
Lowest shutter speed 30s 30s
Highest shutter speed 1/8000s 1/4000s
Continuous shooting rate 12.0 frames/s 3.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Set WB
Image stabilization
Built-in flash
Flash range no built-in flash -
Flash settings Auto, Auto + Red-eye Reduction, Flash On, Flash On + Red-eye Reduction, Slow- speed Sync, Slow-speed Sync + Red-eye, P-TTL, Contrast-control-sync, High-speed sync, Wireless sync Auto, On, Off, Red-eye reduction
Hot shoe
AE bracketing
White balance bracketing
Highest flash synchronize 1/200s 1/180s
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported video resolutions 3840 x 2160 @ 30p, MOV, H.264, Linear PCM3840 x 2160 @ 24p, MOV, H.264, Linear PCM1920 x 1080 @ 60p, MOV, H.264, Linear PCM1920 x 1080 @ 30p, MOV, H.264, Linear PCM1920 x 1080 @ 24p, MOV, H.264, Linear PCM -
Highest video resolution 3840x2160 None
Video data format MPEG-4, H.264 -
Mic port
Headphone port
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB USB 3.2 Gen 1 (5 GBit/sec) USB 1.0 (1.5 Mbit/sec)
GPS None None
Physical
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 820g (1.81 pounds) 605g (1.33 pounds)
Physical dimensions 135 x 104 x 74mm (5.3" x 4.1" x 2.9") 125 x 93 x 66mm (4.9" x 3.7" x 2.6")
DXO scores
DXO All around score not tested not tested
DXO Color Depth score not tested not tested
DXO Dynamic range score not tested not tested
DXO Low light score not tested not tested
Other
Battery life 800 shots -
Battery type Battery Pack -
Battery model D-LI90 4 x AA
Self timer Yes Yes (2 or 12 sec)
Time lapse feature
Storage type Dual SD/SDHC/SDXC slots (UHS-II supported in slot 1) SD/MMC card
Card slots Dual Single
Retail cost $1,999 $850