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Pentax K-3 III vs Sigma SD10

Portability
58
Imaging
72
Features
86
Overall
77
Pentax K-3 Mark III front
 
Sigma SD10 front
Portability
54
Imaging
39
Features
27
Overall
34

Pentax K-3 III vs Sigma SD10 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
  • Revealed March 2021
Sigma SD10
(Full Review)
  • 3MP - APS-C Sensor
  • 1.8" Fixed Screen
  • ISO 100 - 800 (Bump to 1600)
  • 1/6000s Max Shutter
  • No Video
  • Sigma SA Mount
  • 950g - 152 x 120 x 79mm
  • Launched March 2004
  • Previous Model is Sigma SD9
  • New Model is Sigma SD14
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Pentax K-3 III vs Sigma SD10 Overview

On this page, we will be matching up the Pentax K-3 III vs Sigma SD10, both Advanced DSLR cameras by manufacturers Pentax and Sigma. There exists a crucial gap among the sensor resolutions of the K-3 III (26MP) and SD10 (3MP) but both cameras boast the same sensor size (APS-C).

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The K-3 III was unveiled 17 years after the SD10 which is a fairly serious gap as far as camera technology is concerned. Each of these cameras have the same body design (Mid-size SLR).

Before getting straight to a in depth comparison, here is a simple introduction of how the K-3 III scores against the SD10 when it comes to portability, imaging, features and an overall mark.

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Reasons to pick Pentax K-3 III over the Sigma SD10

 K-3 III SD10 
LaunchedMarch 2021March 2004Newer by 208 months
Screen dimensions3.2"1.8"Bigger screen (+1.4")
Screen resolution1620k130kCrisper screen (+1490k dot)
Touch screen Quickly navigate

Reasons to pick Sigma SD10 over the Pentax K-3 III

 SD10 K-3 III 

Common features in the Pentax K-3 III and Sigma SD10

 K-3 III SD10 
Manually focus Very precise focus
Screen typeFixed Fixed Fixed screen
Selfie screen Neither features selfie screen

Pentax K-3 III vs Sigma SD10 Physical Comparison

In case you're looking to travel with your camera regularly, you need to take into account its weight and measurements. The Pentax K-3 III enjoys outside measurements of 135mm x 104mm x 74mm (5.3" x 4.1" x 2.9") along with a weight of 820 grams (1.81 lbs) and the Sigma SD10 has proportions of 152mm x 120mm x 79mm (6.0" x 4.7" x 3.1") accompanied by a weight of 950 grams (2.09 lbs).

Compare the Pentax K-3 III vs Sigma SD10 in the all new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Do not forget, the weight of an Interchangeable Lens Camera will differ dependant on the lens you are employing at that moment. Underneath is a front view measurement comparison of the K-3 III compared to the SD10.

Pentax K-3 III vs Sigma SD10 size comparison

Considering dimensions and weight, the portability grade of the K-3 III and SD10 is 58 and 54 respectively.

Pentax K-3 III vs Sigma SD10 top view buttons comparison

Pentax K-3 III vs Sigma SD10 Sensor Comparison

More often than not, it is hard to see the gap in sensor dimensions merely by going through technical specs. The picture below should provide you a greater sense of the sensor sizing in the K-3 III and SD10.

As you can tell, both of those cameras provide the same sensor dimensions albeit not the same resolution. You should expect the Pentax K-3 III to show extra detail having an extra 23MP. Higher resolution can also allow you to crop photographs more aggressively. The younger K-3 III is going to have a benefit with regard to sensor innovation.

Pentax K-3 III vs Sigma SD10 sensor size comparison

Pentax K-3 III vs Sigma SD10 Screen and ViewFinder

Pentax K-3 III vs Sigma SD10 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-3 III Portrait photography details
Sigma SD10 Portrait photography details
83
manual focus
fantastic megapixels (26 megapixels)
sensor size is decent (APS-C)
provides face detection autofocus
exports RAW files
47
you can focus manually
decent sensor size (APS-C)
delivers RAW files
doesn't have liveview
megapixel count low (3 megapixels)
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Street Comparison

Pentax K-3 III as a Street photography camera
Sigma SD10 as a Street photography camera
71
has image stabilization (Sensor based)
sensor size is decent (APS-C)
exports RAW files
includes touch focus
environment proofing
above average ISO range (1,600,000)
fixed screen
43
decent sensor size (APS-C)
delivers RAW files
screen is fixed
does not have image stabilization
heavier than competition in class (950g)
max ISO too low (800)
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Sports Comparison

Pentax K-3 III Sports photography factors
Sigma SD10 Sports photography factors
79
max shutter speed is good (1/8,000s)
has image stabilization (Sensor based)
fantastic megapixels (26 megapixels)
sensor size is decent (APS-C)
provides tracking autofocus
environment proofing
has phase detect autofocus
low battery power (800 CIPA)
36
high shutter speed (1/6,000 seconds)
decent sensor size (APS-C)
doesn't have liveview
does not have image stabilization
megapixel count low (3MP)
doesn't have phase detect AF
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Travel Comparison

Pentax K-3 III Travel photography details
Sigma SD10 Travel photography details
64
environment proofing
has bluetooth
includes touch focus
fantastic megapixels (26MP)
low battery power (800 CIPA)
display isn't selfie friendly
29
doesn't have Time Lapse recording
heavier than competition in class (950g)
megapixel count low (3MP)
does not posses selfie friendly display
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Landscape Comparison

Pentax K-3 III Landscape photography features
Sigma SD10 Landscape photography features
80
manual focus
interchangeable lenses (Pentax KAF2 mount)
nice screen size (3.2")
has image stabilization (Sensor based)
fantastic megapixels (26MP)
sensor size is decent (APS-C)
no low pass filter
above average ISO range (1,600,000)
exports RAW files
environment proofing
two card slots
low battery power (800 CIPA)
41
you can focus manually
interchangeable lenses (Sigma SA mount)
decent sensor size (APS-C)
delivers RAW files
screen is small (1.8 inch)
doesn't have liveview
does not have image stabilization
megapixel count low (3 megapixels)
max ISO too low (800)
doesn't have Time Lapse recording
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Vlogging Comparison

Pentax K-3 III Vlogging details
Sigma SD10 Vlogging details
35
touchscreen
has image stabilization (Sensor based)
provides face detection autofocus
good video quality (3840 x 2160 pxls)
has external microphone socket
display isn't selfie friendly
9
can't shoot video
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Pentax K-3 III vs Sigma SD10 Specifications

Detailed spec comparison table for Pentax K-3 III and Sigma SD10
 Pentax K-3 Mark IIISigma SD10
General Information
Company Pentax Sigma
Model Pentax K-3 Mark III Sigma SD10
Class Advanced DSLR Advanced DSLR
Revealed 2021-03-31 2004-03-19
Physical type Mid-size SLR Mid-size SLR
Sensor Information
Sensor type CMOS CMOS (Foveon X3)
Sensor size APS-C APS-C
Sensor dimensions 23 x 15.5mm 20.7 x 13.8mm
Sensor area 356.5mm² 285.7mm²
Sensor resolution 26MP 3MP
Anti aliasing filter
Aspect ratio 3:2 3:2
Peak resolution 6192 x 4128 2268 x 1512
Highest native ISO 1600000 800
Highest enhanced ISO - 1600
Lowest native ISO 100 100
RAW pictures
Autofocusing
Manual focus
Touch to focus
AF continuous
Single AF
AF tracking
Selective AF
Center weighted AF
Multi area AF
AF live view
Face detect AF
Contract detect AF
Phase detect AF
Number of focus points 101 -
Cross focus points 25 -
Lens
Lens mount Pentax KAF2 Sigma SA
Available lenses 156 76
Focal length multiplier 1.6 1.7
Screen
Display type Fixed Type Fixed Type
Display diagonal 3.2 inch 1.8 inch
Display resolution 1,620k dots 130k dots
Selfie friendly
Liveview
Touch screen
Viewfinder Information
Viewfinder type Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 100 percent 98 percent
Viewfinder magnification 0.7x 0.77x
Features
Minimum shutter speed 30s 30s
Fastest shutter speed 1/8000s 1/6000s
Continuous shutter rate 12.0 frames/s -
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Custom WB
Image stabilization
Integrated flash
Flash range no built-in flash 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 -
External flash
Auto exposure bracketing
WB bracketing
Fastest flash synchronize 1/200s 1/180s
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
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 lb) 950g (2.09 lb)
Physical dimensions 135 x 104 x 74mm (5.3" x 4.1" x 2.9") 152 x 120 x 79mm (6.0" x 4.7" x 3.1")
DXO scores
DXO Overall 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 -
Self timer Yes Yes (10 sec)
Time lapse shooting
Type of storage Dual SD/SDHC/SDXC slots (UHS-II supported in slot 1) Compact Flash Type I or II
Card slots Dual Single
Retail pricing $1,999 $198