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Pentax K-3 vs Sony RX10 IV

Portability
59
Imaging
65
Features
85
Overall
73
Pentax K-3 front
 
Sony Cyber-shot DSC-RX10 IV front
Portability
52
Imaging
53
Features
82
Overall
64

Pentax K-3 vs Sony RX10 IV Key Specs

Pentax K-3
(Full Review)
  • 24MP - APS-C Sensor
  • 3.2" Fixed Display
  • ISO 100 - 51200
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 800g - 131 x 100 x 77mm
  • Revealed April 2014
  • Replacement is Pentax K-3 II
Sony RX10 IV
(Full Review)
  • 20MP - 1" Sensor
  • 3" Tilting Screen
  • ISO 125 - 12800 (Push to 25600)
  • Optical Image Stabilization
  • 3840 x 2160 video
  • 24-600mm (F2.4-4.0) lens
  • 1095g - 133 x 94 x 145mm
  • Launched September 2017
  • Succeeded the Sony RX10 III
Photography Glossary

Pentax K-3 vs Sony RX10 IV Overview

Following is a in depth review of the Pentax K-3 and Sony RX10 IV, former is a Advanced DSLR while the latter is a Large Sensor Superzoom by companies Pentax and Sony. The sensor resolution of the K-3 (24MP) and the RX10 IV (20MP) is pretty close but the K-3 (APS-C) and RX10 IV (1") have totally different sensor size.

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The K-3 was announced 4 years before the RX10 IV which is a fairly significant difference as far as camera tech is concerned. Both of the cameras feature different body design with the Pentax K-3 being a Mid-size SLR camera and the Sony RX10 IV being a SLR-like (bridge) camera.

Before we go straight to a step-by-step comparison, here is a quick overview of how the K-3 scores vs the RX10 IV for portability, imaging, features and an overall score.

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Reasons to pick Pentax K-3 over the Sony RX10 IV

 K-3 RX10 IV 
Screen size3.2"3"Bigger screen (+0.2")

Reasons to pick Sony RX10 IV over the Pentax K-3

 RX10 IV K-3 
LaunchedSeptember 2017April 2014More modern by 41 months
Screen typeTiltingFixed Tilting screen
Screen resolution1440k1037kClearer screen (+403k dot)
Touch friendly screen Quickly navigate

Common features in the Pentax K-3 and Sony RX10 IV

 K-3 RX10 IV 
Manually focus Very precise focus
Selfie screen Neither offers selfie screen

Pentax K-3 vs Sony RX10 IV Physical Comparison

If you're intending to carry around your camera frequently, you should factor its weight and measurements. The Pentax K-3 offers external measurements of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") having a weight of 800 grams (1.76 lbs) while the Sony RX10 IV has proportions of 133mm x 94mm x 145mm (5.2" x 3.7" x 5.7") with a weight of 1095 grams (2.41 lbs).

Check the Pentax K-3 and Sony RX10 IV in our newest Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an ILC will differ dependant on the lens you are utilizing at that moment. Here is a front view dimensions comparison of the K-3 and the RX10 IV.

Pentax K-3 vs Sony RX10 IV size comparison

Factoring in size and weight, the portability score of the K-3 and RX10 IV is 59 and 52 respectively.

Pentax K-3 vs Sony RX10 IV top view buttons comparison

Pentax K-3 vs Sony RX10 IV Sensor Comparison

Usually, it is hard to envision the gap in sensor sizes simply by looking through specs. The image below will offer you a better sense of the sensor sizing in the K-3 and RX10 IV.

As you can plainly see, both of those cameras come with different megapixel count and different sensor sizes. The K-3 with its bigger sensor will make getting shallow DOF easier and the Pentax K-3 will render more detail with its extra 4 Megapixels. Higher resolution will allow you to crop shots a good deal more aggressively. The more aged K-3 will be behind when it comes to sensor technology.

Pentax K-3 vs Sony RX10 IV sensor size comparison

Pentax K-3 vs Sony RX10 IV Screen and ViewFinder

Pentax K-3 vs Sony RX10 IV Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-3 as a Portrait photography camera
Sony RX10 IV as a Portrait photography camera
79
you can focus manually
good megapixels (24 megapixels)
good sensor size (APS-C)
supports face detect focus
delivers RAW formats
71
focusing manually
high flash sync speed (1/2,000s)
MP count good (20 megapixels)
sensor size is good (1")
offers face detection focusing
delivers RAW files
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Street Comparison

Pentax K-3 Street photography info
Sony RX10 IV Street photography info
69
has image stabilization (Sensor based)
good sensor size (APS-C)
delivers RAW formats
weather proof
above average ISO range (51,200)
no articulating screen
64
screen tilts up and down
has image stabilization (Optical)
sensor size is good (1")
delivers RAW files
comes with touch to focus
environment proofing
more heavy than competitors (1,095g)
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Sports Comparison

Sports photography with Pentax K-3
Sports photography with Sony RX10 IV
76
max shutter speed is good (1/8,000 seconds)
has image stabilization (Sensor based)
good megapixels (24MP)
good sensor size (APS-C)
supports tracking focus
weather proof
comes with phase detect auto focus
bad battery life (560 CIPA)
76
long zoom range (24-600mm 25.0 x zoom)
quiet shooting (1/32,000 seconds)
fast continuous shooting (24.0 frames/s)
has image stabilization (Optical)
MP count good (20 megapixels)
sensor size is good (1")
offers tracking autofocus
environment proofing
comes with phase detect AF
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Travel Comparison

Travel photography with Pentax K-3
Travel photography with Sony RX10 IV
60
weather proof
good megapixels (24 megapixels)
built-in flash
bad battery life (560 shots)
display is not selfie friendly
56
environment proofing
has bluetooth
comes with touch to focus
MP count good (20MP)
has built in flash
fairly wide (24mm)
great zoom (600mm)
missing Timelapse recording
more heavy than competitors (1,095 grams)
display isn't selfie friendly
somewhat slow maximum aperture (f2.4)
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Landscape Comparison

Pentax K-3 Landscape photography features
Sony RX10 IV Landscape photography features
77
you can focus manually
switch lenses (Pentax KAF2 mount)
pretty good screen size (3.2")
has image stabilization (Sensor based)
good megapixels (24MP)
good sensor size (APS-C)
doesnt have anti aliasing filter
above average ISO range (51,200)
delivers RAW formats
weather proof
two card slots
bad battery life (560 shots)
62
focusing manually
fairly wide (24mm)
nice screen size (3 inches)
has image stabilization (Optical)
MP count good (20MP)
sensor size is good (1")
delivers RAW files
environment proofing
lens is fixed (fixed lens mount)
somewhat slow maximum aperture (f2.4)
missing Timelapse recording
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Vlogging Comparison

Pentax K-3 as a Vlogging camera
Sony RX10 IV as a Vlogging camera
34
has image stabilization (Sensor based)
supports face detect focus
good video quality (1920 x 1080 resolution)
does have mic socket
display is not selfie friendly
29
fairly wide (24mm)
touchscreen enabled
has image stabilization (Optical)
offers face detection focusing
video res high (3840 x 2160 pxls)
does have external microphone port
somewhat slow maximum aperture (f2.4)
display isn't selfie friendly
more heavy than competitors (1,095g)
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Pentax K-3 vs Sony RX10 IV Specifications

Detailed spec comparison table for Pentax K-3 and Sony RX10 IV
 Pentax K-3Sony Cyber-shot DSC-RX10 IV
General Information
Manufacturer Pentax Sony
Model Pentax K-3 Sony Cyber-shot DSC-RX10 IV
Category Advanced DSLR Large Sensor Superzoom
Revealed 2014-04-10 2017-09-12
Body design Mid-size SLR SLR-like (bridge)
Sensor Information
Powered by Prime III Bionz X
Sensor type CMOS BSI-CMOS
Sensor size APS-C 1"
Sensor measurements 23.5 x 15.6mm 13.2 x 8.8mm
Sensor surface area 366.6mm² 116.2mm²
Sensor resolution 24MP 20MP
Anti aliasing filter
Aspect ratio 3:2 1:1, 4:3, 3:2 and 16:9
Peak resolution 6016 x 4000 5472 x 3648
Highest native ISO 51200 12800
Highest enhanced ISO - 25600
Minimum native ISO 100 125
RAW files
Minimum enhanced ISO - 64
Autofocusing
Focus manually
Autofocus touch
Continuous autofocus
Single autofocus
Autofocus tracking
Autofocus selectice
Autofocus center weighted
Autofocus multi area
Live view autofocus
Face detect focus
Contract detect focus
Phase detect focus
Number of focus points 27 315
Cross focus points 25 -
Lens
Lens mounting type Pentax KAF2 fixed lens
Lens focal range - 24-600mm (25.0x)
Maximal aperture - f/2.4-4.0
Macro focus distance - 3cm
Number of lenses 151 -
Focal length multiplier 1.5 2.7
Screen
Range of display Fixed Type Tilting
Display size 3.2 inches 3 inches
Resolution of display 1,037 thousand dot 1,440 thousand dot
Selfie friendly
Liveview
Touch function
Display tech TFT LCD monitor -
Viewfinder Information
Viewfinder Optical (pentaprism) Electronic
Viewfinder resolution - 2,359 thousand dot
Viewfinder coverage 100% 100%
Viewfinder magnification 0.64x 0.7x
Features
Minimum shutter speed 30 seconds 30 seconds
Fastest shutter speed 1/8000 seconds 1/2000 seconds
Fastest quiet shutter speed - 1/32000 seconds
Continuous shutter speed 8.0fps 24.0fps
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Custom white balance
Image stabilization
Inbuilt flash
Flash range 13.00 m (at ISO 100) 10.80 m (at Auto ISO)
Flash modes Auto, on, off, red-eye, slow sync, slow sync + red-eye, trailing curtain sync, high speed, wireless, manual Auto, fill-flash, slow sync, rear sync, off
External flash
Auto exposure bracketing
WB bracketing
Fastest flash sync 1/180 seconds 1/2000 seconds
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p, 24p) 3840 x 2160 (30p, 25p, 24p), 1920 x 1080 (60p, 60i, 24p) ,1440 x 1080 (30p), 640 x 480 (30p)
Highest video resolution 1920x1080 3840x2160
Video format MPEG-4, H.264 MPEG-4, AVCHD, XAVC S
Microphone jack
Headphone jack
Connectivity
Wireless None Built-In
Bluetooth
NFC
HDMI
USB USB 3.0 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS Optional None
Physical
Environmental seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 800g (1.76 pounds) 1095g (2.41 pounds)
Physical dimensions 131 x 100 x 77mm (5.2" x 3.9" x 3.0") 133 x 94 x 145mm (5.2" x 3.7" x 5.7")
DXO scores
DXO Overall score 80 not tested
DXO Color Depth score 23.7 not tested
DXO Dynamic range score 13.4 not tested
DXO Low light score 1216 not tested
Other
Battery life 560 photos 400 photos
Battery form Battery Pack Battery Pack
Battery model D-LI90 NP-FW50
Self timer Yes ( 2 or 12 seconds) Yes (2 or 10 sec, continuous)
Time lapse recording
Type of storage Dual SD/SDHC/SDXC SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
Storage slots Dual 1
Pricing at release $639 $1,698