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Pentax K-3 vs Sony RX1

Portability
59
Imaging
65
Features
85
Overall
73
Pentax K-3 front
 
Sony Cyber-shot DSC-RX1 front
Portability
79
Imaging
70
Features
57
Overall
64

Pentax K-3 vs Sony RX1 Key Specs

Pentax K-3
(Full Review)
  • 24MP - APS-C Sensor
  • 3.2" Fixed Screen
  • 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
  • Introduced April 2014
  • Refreshed by Pentax K-3 II
Sony RX1
(Full Review)
  • 24MP - Full frame Sensor
  • 3" Fixed Screen
  • ISO 100 - 25600
  • 1920 x 1080 video
  • 35mm (F2.0-22.0) lens
  • 482g - 113 x 65 x 70mm
  • Revealed February 2013
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Pentax K-3 vs Sony RX1 Overview

Let's look closer at the Pentax K-3 and Sony RX1, former is a Advanced DSLR while the latter is a Large Sensor Compact by competitors Pentax and Sony. The resolution of the K-3 (24MP) and the RX1 (24MP) is pretty similar but the K-3 (APS-C) and RX1 (Full frame) posses different sensor size.

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The K-3 was brought out 14 months after the RX1 which makes them a generation away from one another. Both of these cameras feature different body design with the Pentax K-3 being a Mid-size SLR camera and the Sony RX1 being a Large Sensor Compact camera.

Before we go into a full comparison, here is a short view of how the K-3 matches up against the RX1 when considering portability, imaging, features and an overall score.

Photography Glossary
	
	

Reasons to pick Pentax K-3 over the Sony RX1

 K-3 RX1 
RevealedApril 2014February 2013More modern by 14 months
Screen size3.2"3"Bigger screen (+0.2")

Reasons to pick Sony RX1 over the Pentax K-3

 RX1 K-3 
Screen resolution1229k1037kSharper screen (+192k dot)

Common features in the Pentax K-3 and Sony RX1

 K-3 RX1 
Focus manually Dial precise focusing
Screen typeFixed Fixed Fixed screen
Selfie screen Lacking selfie screen
Touch screen Lacking Touch screen

Pentax K-3 vs Sony RX1 Physical Comparison

When you are intending to carry around your camera regularly, you'll need to take into account its weight and volume. The Pentax K-3 enjoys external dimensions of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") accompanied by a weight of 800 grams (1.76 lbs) while the Sony RX1 has sizing of 113mm x 65mm x 70mm (4.4" x 2.6" x 2.8") accompanied by a weight of 482 grams (1.06 lbs).

See the Pentax K-3 and Sony RX1 in our newest Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Keep in mind, the weight of an ILC will differ depending on the lens you are using at that moment. Following is a front view over all size comparison of the K-3 against the RX1.

Pentax K-3 vs Sony RX1 size comparison

Taking into consideration dimensions and weight, the portability grade of the K-3 and RX1 is 59 and 79 respectively.

Pentax K-3 vs Sony RX1 top view buttons comparison

Pentax K-3 vs Sony RX1 Sensor Comparison

More often than not, its difficult to visualize the contrast between sensor sizes just by going over technical specs. The image underneath may offer you a greater sense of the sensor sizes in the K-3 and RX1.

As you have seen, both of the cameras feature the identical megapixels albeit different sensor sizes. The K-3 includes the tinier sensor which is going to make achieving shallower depth of field more challenging. The more modern K-3 provides an edge with regard to sensor tech.

Pentax K-3 vs Sony RX1 sensor size comparison

Pentax K-3 vs Sony RX1 Screen and ViewFinder

Pentax K-3 vs Sony RX1 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-3 Portrait photography highlights
Sony RX1 Portrait photography highlights
79
manual focus
megapixel count good (24MP)
sensor size is good (APS-C)
includes face detection focusing
exports RAW files
82
you can focus manually
flash sync is higher than normal (1/4,000s)
MP count decent (24 megapixels)
large sensor size (Full frame)
supports face detect focusing
supports RAW files
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Street Comparison

Pentax K-3 Street photography features
Sony RX1 Street photography features
69
built in image stabilization (Sensor based)
sensor size is good (APS-C)
exports RAW files
environment proofing
great high ISO (51,200)
fixed screen
66
large sensor size (Full frame)
supports RAW files
great ISO range (25,600)
screen does not articulate
no image stabilization
heavier than competition in class (482 grams)
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Sports Comparison

Pentax K-3 as a Sports photography camera
Sony RX1 as a Sports photography camera
76
maximum shutter speed is high (1/8,000s)
built in image stabilization (Sensor based)
megapixel count good (24 megapixels)
sensor size is good (APS-C)
includes tracking autofocus
environment proofing
has phase detect AF
bad battery power (560 shots)
53
MP count decent (24MP)
large sensor size (Full frame)
supports tracking focus
can't change focal length (35mm)
slow continuous shooting (5.0 frames/s)
no image stabilization
not so great battery pack (270 shots)
has no phase detect AF
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Travel Comparison

Pentax K-3 Travel photography features
Sony RX1 Travel photography features
60
environment proofing
megapixel count good (24 megapixels)
built-in flash
bad battery power (560 CIPA)
doesn't have a selfie friendly display
62
MP count decent (24MP)
has built in flash
great maximum aperture (f2.0)
doesn't have Time Lapse recording
not so great battery pack (270 per charge)
heavier than competition in class (482g)
does not have a selfie friendly screen
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Landscape Comparison

Pentax K-3 as a Landscape photography camera
Sony RX1 as a Landscape photography camera
77
manual focus
switch lenses (Pentax KAF2 mount)
nice screen size (3.2 inches)
built in image stabilization (Sensor based)
megapixel count good (24MP)
sensor size is good (APS-C)
doesnt have low pass filter
great high ISO (51,200)
exports RAW files
environment proofing
2 card slots
bad battery power (560 shots)
65
you can focus manually
great maximum aperture (f2.0)
screen is a decent size (3 inch)
MP count decent (24 megapixels)
large sensor size (Full frame)
great ISO range (25,600)
supports RAW files
lens is fixed (fixed lens mount)
can't change focal length (35mm)
no image stabilization
not so great battery pack (270 shots)
doesn't have Time Lapse recording
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Vlogging Comparison

Pentax K-3 Vlogging information
Sony RX1 Vlogging information
34
built in image stabilization (Sensor based)
includes face detection focusing
high video quality (1920 x 1080 resolution)
has external mic support
doesn't have a selfie friendly display
34
great maximum aperture (f2.0)
supports face detect focusing
video res high (1920 x 1080 pxls)
does have mic support
does not have a selfie friendly screen
no image stabilization
heavier than competition in class (482g)
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Pentax K-3 vs Sony RX1 Specifications

Detailed spec comparison table for Pentax K-3 and Sony RX1
 Pentax K-3Sony Cyber-shot DSC-RX1
General Information
Company Pentax Sony
Model Pentax K-3 Sony Cyber-shot DSC-RX1
Category Advanced DSLR Large Sensor Compact
Introduced 2014-04-10 2013-02-19
Physical type Mid-size SLR Large Sensor Compact
Sensor Information
Processor Prime III -
Sensor type CMOS CMOS
Sensor size APS-C Full frame
Sensor dimensions 23.5 x 15.6mm 35.8 x 23.8mm
Sensor surface area 366.6mm² 852.0mm²
Sensor resolution 24MP 24MP
Anti aliasing filter
Aspect ratio 3:2 3:2 and 16:9
Max resolution 6016 x 4000 6000 x 4000
Max native ISO 51200 25600
Lowest native ISO 100 100
RAW format
Autofocusing
Focus manually
Touch to focus
Continuous AF
Single AF
AF tracking
AF selectice
AF center weighted
AF multi area
Live view AF
Face detection AF
Contract detection AF
Phase detection AF
Number of focus points 27 25
Cross focus points 25 -
Lens
Lens mounting type Pentax KAF2 fixed lens
Lens focal range - 35mm (1x)
Maximal aperture - f/2.0-22.0
Available lenses 151 -
Focal length multiplier 1.5 1
Screen
Screen type Fixed Type Fixed Type
Screen size 3.2 inch 3 inch
Screen resolution 1,037 thousand dots 1,229 thousand dots
Selfie friendly
Liveview
Touch function
Screen technology TFT LCD monitor Xtra FineTFT LCD
Viewfinder Information
Viewfinder type Optical (pentaprism) Electronic and Optical (optional)
Viewfinder coverage 100% -
Viewfinder magnification 0.64x -
Features
Min shutter speed 30 secs 30 secs
Max shutter speed 1/8000 secs 1/4000 secs
Continuous shutter rate 8.0 frames per second 5.0 frames per second
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes Yes
Custom WB
Image stabilization
Integrated flash
Flash range 13.00 m (at ISO 100) 6.00 m
Flash options Auto, on, off, red-eye, slow sync, slow sync + red-eye, trailing curtain sync, high speed, wireless, manual Auto, On, Off, Slow Sync
External flash
Auto exposure bracketing
White balance bracketing
Max flash synchronize 1/180 secs 1/4000 secs
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p, 24p) 1920 x 1080 (60, 50, 25, 24 fps), 1440 x 1080 (30, 25 fps), 1280 x 720 (30 fps), 640 x 480 (30, 25 fps)
Max video resolution 1920x1080 1920x1080
Video data format MPEG-4, H.264 MPEG-4, AVCHD
Mic support
Headphone support
Connectivity
Wireless None Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 3.0 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS Optional None
Physical
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 800 gr (1.76 lb) 482 gr (1.06 lb)
Physical dimensions 131 x 100 x 77mm (5.2" x 3.9" x 3.0") 113 x 65 x 70mm (4.4" x 2.6" x 2.8")
DXO scores
DXO Overall score 80 93
DXO Color Depth score 23.7 25.1
DXO Dynamic range score 13.4 14.3
DXO Low light score 1216 2534
Other
Battery life 560 images 270 images
Battery style Battery Pack Battery Pack
Battery model D-LI90 NP-BX1
Self timer Yes ( 2 or 12 seconds) Yes (2 or 10 sec)
Time lapse recording
Type of storage Dual SD/SDHC/SDXC SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
Card slots Dual One
Pricing at release $639 $2,798