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Pentax K20D vs Sony RX10 III

Portability
59
Imaging
54
Features
52
Overall
53
Pentax K20D front
 
Sony Cyber-shot DSC-RX10 III front
Portability
53
Imaging
53
Features
77
Overall
62

Pentax K20D vs Sony RX10 III Key Specs

Pentax K20D
(Full Review)
  • 15MP - APS-C Sensor
  • 2.7" Fixed Screen
  • ISO 100 - 3200 (Boost to 6400)
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF2 Mount
  • 800g - 142 x 101 x 70mm
  • Launched June 2008
  • Superseded the Pentax K10D
Sony RX10 III
(Full Review)
  • 20MP - 1" Sensor
  • 3" Tilting Screen
  • ISO 125 - 12800 (Expand to 25600)
  • Optical Image Stabilization
  • 3840 x 2160 video
  • 24-600mm (F2.4-4.0) lens
  • 1051g - 133 x 94 x 127mm
  • Introduced March 2016
  • Older Model is Sony RX10 II
  • Updated by Sony RX10 IV
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Pentax K20D vs Sony RX10 III Overview

Here is a extensive assessment of the Pentax K20D vs Sony RX10 III, former being a Advanced DSLR while the latter is a Large Sensor Superzoom by brands Pentax and Sony. There exists a large gap between the image resolutions of the K20D (15MP) and RX10 III (20MP) and the K20D (APS-C) and RX10 III (1") come with different sensor measurements.

Photography Glossary

The K20D was unveiled 8 years prior to the RX10 III and that is quite a serious difference as far as technology is concerned. Both of these cameras offer different body type with the Pentax K20D being a Mid-size SLR camera and the Sony RX10 III being a SLR-like (bridge) camera.

Before getting straight into a comprehensive comparison, below is a quick view of how the K20D grades vs the RX10 III with respect to portability, imaging, features and an overall rating.

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Reasons to pick Pentax K20D over the Sony RX10 III

 K20D RX10 III 

Reasons to pick Sony RX10 III over the Pentax K20D

 RX10 III K20D 
IntroducedMarch 2016June 2008Fresher by 94 months
Screen typeTiltingFixed Tilting screen
Screen sizing3"2.7"Bigger screen (+0.3")
Screen resolution1229k230kCrisper screen (+999k dot)

Common features in the Pentax K20D and Sony RX10 III

 K20D RX10 III 
Manually focus Dial precise focus
Selfie screen Neither provides selfie screen
Touch screen No Touch screen

Pentax K20D vs Sony RX10 III Physical Comparison

For those who are aiming to carry your camera frequently, you are going to need to think about its weight and measurements. The Pentax K20D provides exterior measurements of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") having a weight of 800 grams (1.76 lbs) whilst the Sony RX10 III has proportions of 133mm x 94mm x 127mm (5.2" x 3.7" x 5.0") and a weight of 1051 grams (2.32 lbs).

Take a look at the Pentax K20D vs Sony RX10 III in our newest Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Keep in mind, the weight of an ILC will change depending on the lens you have during that time. The following is the front view scale comparison of the K20D against the RX10 III.

Pentax K20D vs Sony RX10 III size comparison

Factoring in dimensions and weight, the portability score of the K20D and RX10 III is 59 and 53 respectively.

Pentax K20D vs Sony RX10 III top view buttons comparison

Pentax K20D vs Sony RX10 III Sensor Comparison

Sometimes, it is tough to picture the gap between sensor sizing only by reviewing specifications. The photograph underneath should give you a stronger sense of the sensor sizing in the K20D and RX10 III.

Plainly, both of those cameras enjoy different resolutions and different sensor sizing. The K20D using its bigger sensor is going to make shooting shallow DOF easier and the Sony RX10 III will offer you extra detail having an extra 5MP. Higher resolution can also help you crop shots far more aggressively. The older K20D is going to be behind with regard to sensor technology.

Pentax K20D vs Sony RX10 III sensor size comparison

Pentax K20D vs Sony RX10 III Screen and ViewFinder

Pentax K20D vs Sony RX10 III Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K20D as a Portrait photography camera
Sony RX10 III as a Portrait photography camera
72
has manual focus
resolution is good (15 megapixels)
sensor size is decent (APS-C)
saves RAW formats
71
you can focus manually
decent sensor resolution (20 megapixels)
good sensor size (1")
offers face detect autofocus
exports RAW formats
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Street Comparison

Pentax K20D Street photography info
Sony RX10 III Street photography info
65
built in image stabilization (Sensor based)
sensor size is decent (APS-C)
saves RAW formats
weather proof
no articulating screen
64
tilting screen
image stabilization (Optical)
good sensor size (1")
exports RAW formats
weather proofing
heavier than others in class (1,051 grams)
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Sports Comparison

Pentax K20D Sports photography features
Sony RX10 III Sports photography features
68
built in image stabilization (Sensor based)
resolution is good (15MP)
sensor size is decent (APS-C)
weather proof
supports phase detect AF
max frames per second very slow (3.0 frames per second)
70
excellent zoom range (24-600mm 25.0 x zoom)
silent mode (1/32,000 seconds)
image stabilization (Optical)
decent sensor resolution (20 megapixels)
good sensor size (1")
offers tracking focus
weather proofing
great battery power (420 CIPA)
lack of phase detect autofocus
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Travel Comparison

Pentax K20D Travel photography advice
Sony RX10 III Travel photography advice
64
weather proof
resolution is good (15MP)
built-in flash
display is not selfie friendly
55
great battery power (420 per charge)
weather proofing
decent sensor resolution (20MP)
built-in flash
pretty wide (24mm)
long reach (600mm)
does not have Time Lapse recording
heavier than others in class (1,051g)
screen is not selfie friendly
somewhat slow max aperture (f2.4)
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Landscape Comparison

Landscape photography with Pentax K20D
Landscape photography with Sony RX10 III
71
has manual focus
switch lenses (Pentax KAF2 mount)
built in image stabilization (Sensor based)
resolution is good (15MP)
sensor size is decent (APS-C)
saves RAW formats
weather proof
tiny screen (2.7 inch)
64
you can focus manually
pretty wide (24mm)
decent sized screen (3 inch)
image stabilization (Optical)
decent sensor resolution (20MP)
good sensor size (1")
exports RAW formats
weather proofing
great battery power (420 shots)
can't swap lenses (fixed lens mount)
somewhat slow max aperture (f2.4)
does not have Time Lapse recording
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Vlogging Comparison

Vlogging with Pentax K20D
Vlogging with Sony RX10 III
9
can't shoot video
28
pretty wide (24mm)
image stabilization (Optical)
offers face detect autofocus
high quality video (3840 x 2160 pixels)
comes with mic jack
somewhat slow max aperture (f2.4)
screen is not selfie friendly
heavier than others in class (1,051 grams)
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Pentax K20D vs Sony RX10 III Specifications

Detailed spec comparison table for Pentax K20D and Sony RX10 III
 Pentax K20DSony Cyber-shot DSC-RX10 III
General Information
Make Pentax Sony
Model type Pentax K20D Sony Cyber-shot DSC-RX10 III
Type Advanced DSLR Large Sensor Superzoom
Launched 2008-06-25 2016-03-29
Body design Mid-size SLR SLR-like (bridge)
Sensor Information
Processor Chip - Bionz X
Sensor type CMOS BSI-CMOS
Sensor size APS-C 1"
Sensor dimensions 23.4 x 15.6mm 13.2 x 8.8mm
Sensor surface area 365.0mm² 116.2mm²
Sensor resolution 15MP 20MP
Anti alias filter
Aspect ratio 3:2 1:1, 4:3, 3:2 and 16:9
Maximum resolution 4672 x 3104 5472 x 3648
Maximum native ISO 3200 12800
Maximum boosted ISO 6400 25600
Min native ISO 100 125
RAW data
Min boosted ISO - 64
Autofocusing
Focus manually
Touch to focus
AF continuous
Single AF
Tracking AF
AF selectice
AF center weighted
Multi area AF
Live view AF
Face detection AF
Contract detection AF
Phase detection AF
Total focus points 11 25
Lens
Lens mount type Pentax KAF2 fixed lens
Lens zoom range - 24-600mm (25.0x)
Max aperture - f/2.4-4.0
Macro focusing range - 3cm
Total lenses 151 -
Crop factor 1.5 2.7
Screen
Screen type Fixed Type Tilting
Screen diagonal 2.7 inch 3 inch
Screen resolution 230k dot 1,229k dot
Selfie friendly
Liveview
Touch friendly
Viewfinder Information
Viewfinder type Optical (pentaprism) Electronic
Viewfinder resolution - 2,359k dot
Viewfinder coverage 95 percent 100 percent
Viewfinder magnification 0.64x 0.7x
Features
Lowest shutter speed 30 secs 30 secs
Highest shutter speed 1/4000 secs 1/2000 secs
Highest silent shutter speed - 1/32000 secs
Continuous shooting speed 3.0fps 14.0fps
Shutter priority
Aperture priority
Manual exposure
Exposure compensation Yes Yes
Custom WB
Image stabilization
Inbuilt flash
Flash distance 13.00 m (at ISO 100) 10.80 m (at Auto ISO)
Flash modes Auto, Red-Eye, Slow, Red-Eye Slow, Rear curtain, wireless Auto, fill-flash, slow sync, rear sync, off
External flash
AE bracketing
WB bracketing
Highest flash sync 1/180 secs -
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions - 3840 x 2160 (30p, 25p, 24p), 1920 x 1080 (60p, 60i, 24p) ,1440 x 1080 (30p), 640 x 480 (30p)
Maximum video resolution None 3840x2160
Video file format - MPEG-4, AVCHD, XAVC S
Mic input
Headphone input
Connectivity
Wireless None Built-In
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environment seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 800 grams (1.76 lbs) 1051 grams (2.32 lbs)
Dimensions 142 x 101 x 70mm (5.6" x 4.0" x 2.8") 133 x 94 x 127mm (5.2" x 3.7" x 5.0")
DXO scores
DXO All around rating 65 70
DXO Color Depth rating 22.9 23.1
DXO Dynamic range rating 11.1 12.6
DXO Low light rating 639 472
Other
Battery life - 420 shots
Battery format - Battery Pack
Battery ID D-LI50 NP-FW50
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec, continuous)
Time lapse feature
Type of storage SD/MMC/SDHC card SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
Storage slots Single Single
Pricing at launch $700 $1,398