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Pentax K20D vs Sony RX1

Portability
59
Imaging
54
Features
52
Overall
53
Pentax K20D front
 
Sony Cyber-shot DSC-RX1 front
Portability
79
Imaging
70
Features
57
Overall
64

Pentax K20D vs Sony RX1 Key Specs

Pentax K20D
(Full Review)
  • 15MP - APS-C Sensor
  • 2.7" Fixed Screen
  • ISO 100 - 3200 (Expand to 6400)
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF2 Mount
  • 800g - 142 x 101 x 70mm
  • Released June 2008
  • Replaced the Pentax K10D
Sony RX1
(Full Review)
  • 24MP - Full frame Sensor
  • 3" Fixed Display
  • 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 K20D vs Sony RX1 Overview

Lets look a little more in depth at the Pentax K20D vs Sony RX1, one being a Advanced DSLR and the other is a Large Sensor Compact by manufacturers Pentax and Sony. There exists a sizeable gap among the image resolutions of the K20D (15MP) and RX1 (24MP) and the K20D (APS-C) and RX1 (Full frame) offer totally different sensor measurements.

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The K20D was announced 5 years before the RX1 and that is a fairly large gap as far as camera technology is concerned. Both of the cameras feature different body design with the Pentax K20D being a Mid-size SLR camera and the Sony RX1 being a Large Sensor Compact camera.

Before getting right into a detailed comparison, here is a short view of how the K20D grades vs the RX1 in relation to portability, imaging, features and an overall grade.

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Reasons to pick Pentax K20D over the Sony RX1

 K20D RX1 

Reasons to pick Sony RX1 over the Pentax K20D

 RX1 K20D 
RevealedFebruary 2013June 2008More recent by 56 months
Display size3"2.7"Larger display (+0.3")
Display resolution1229k230kClearer display (+999k dot)

Common features in the Pentax K20D and Sony RX1

 K20D RX1 
Manually focus Dial precise focus
Display typeFixed Fixed Fixed display
Selfie screen Neither includes selfie screen
Touch display Neither includes Touch display

Pentax K20D vs Sony RX1 Physical Comparison

For anyone who is looking to lug around your camera often, you will need to think about its weight and proportions. The Pentax K20D features outer 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 RX1 has measurements of 113mm x 65mm x 70mm (4.4" x 2.6" x 2.8") with a weight of 482 grams (1.06 lbs).

Analyze the Pentax K20D vs Sony RX1 in the latest Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Keep in mind, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are using at that time. Following is a front view over all size comparison of the K20D against the RX1.

Pentax K20D vs Sony RX1 size comparison

Taking into consideration dimensions and weight, the portability rating of the K20D and RX1 is 59 and 79 respectively.

Pentax K20D vs Sony RX1 top view buttons comparison

Pentax K20D vs Sony RX1 Sensor Comparison

Sometimes, it is hard to envision the difference in sensor measurements just by viewing technical specs. The photograph below will give you a far better sense of the sensor sizing in the K20D and RX1.

As you can tell, each of these cameras feature different resolutions and different sensor measurements. The K20D with its smaller sensor will make getting shallow DOF tougher and the Sony RX1 will provide you with more detail with its extra 9 Megapixels. Greater resolution will also let you crop pics way more aggressively. The older K20D will be disadvantaged with regard to sensor innovation.

Pentax K20D vs Sony RX1 sensor size comparison

Pentax K20D vs Sony RX1 Screen and ViewFinder

Pentax K20D vs Sony RX1 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K20D Portrait photography highlights
Sony RX1 Portrait photography highlights
72
has manual focus
sensor resolution is decent (15MP)
sensor size is decent (APS-C)
supports RAW formats
82
manual focus
above average flash sync (1/4,000s)
megapixel count decent (24 megapixels)
sensor size is great (Full frame)
features face detect focusing
supports RAW formats
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Street Comparison

Pentax K20D Street photography features
Sony RX1 Street photography features
65
image stabilization (Sensor based)
sensor size is decent (APS-C)
supports RAW formats
environment sealing
no moving screen
66
sensor size is great (Full frame)
supports RAW formats
great high ISO (25,600)
no articulating screen
lack of image stabilization
more heavy than average (482 grams)
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Sports Comparison

Sports photography with Pentax K20D
Sports photography with Sony RX1
68
image stabilization (Sensor based)
sensor resolution is decent (15MP)
sensor size is decent (APS-C)
environment sealing
supports phase detect auto focus
slow frames per second (3.0 fps)
53
megapixel count decent (24 megapixels)
sensor size is great (Full frame)
features tracking focus
can't change focal length (35mm)
slow continuous shooting (5.0 fps)
lack of image stabilization
not so great battery pack (270 per charge)
lacks phase detect AF
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Travel Comparison

Pentax K20D Travel photography factors
Sony RX1 Travel photography factors
64
environment sealing
sensor resolution is decent (15MP)
built-in flash
does not have a selfie friendly screen
62
megapixel count decent (24MP)
built-in flash
great maximum aperture (f2.0)
doesn't have Timelapse function
not so great battery pack (270 per charge)
more heavy than average (482g)
screen is not selfie friendly
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Landscape Comparison

Landscape photography with Pentax K20D
Landscape photography with Sony RX1
71
has manual focus
swap lenses (Pentax KAF2 mount)
image stabilization (Sensor based)
sensor resolution is decent (15MP)
sensor size is decent (APS-C)
supports RAW formats
environment sealing
tiny screen (2.7 inches)
65
manual focus
great maximum aperture (f2.0)
screen size is decent (3")
megapixel count decent (24 megapixels)
sensor size is great (Full frame)
great high ISO (25,600)
supports RAW formats
lens is fixed (fixed lens mount)
can't change focal length (35mm)
lack of image stabilization
not so great battery pack (270 shots)
doesn't have Timelapse function
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Vlogging Comparison

Vlogging with Pentax K20D
Vlogging with Sony RX1
9
no video recording
34
great maximum aperture (f2.0)
features face detect focusing
high quality video (1920 x 1080 pixels)
has microphone support
screen is not selfie friendly
lack of image stabilization
more heavy than average (482 grams)
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Pentax K20D vs Sony RX1 Specifications

Detailed spec comparison table for Pentax K20D and Sony RX1
 Pentax K20DSony Cyber-shot DSC-RX1
General Information
Manufacturer Pentax Sony
Model type Pentax K20D Sony Cyber-shot DSC-RX1
Category Advanced DSLR Large Sensor Compact
Released 2008-06-25 2013-02-19
Physical type Mid-size SLR Large Sensor Compact
Sensor Information
Sensor type CMOS CMOS
Sensor size APS-C Full frame
Sensor measurements 23.4 x 15.6mm 35.8 x 23.8mm
Sensor surface area 365.0mm² 852.0mm²
Sensor resolution 15 megapixels 24 megapixels
Anti alias filter
Aspect ratio 3:2 3:2 and 16:9
Max resolution 4672 x 3104 6000 x 4000
Max native ISO 3200 25600
Max enhanced ISO 6400 -
Lowest native ISO 100 100
RAW photos
Autofocusing
Manual focusing
Autofocus touch
Autofocus continuous
Autofocus single
Tracking autofocus
Autofocus selectice
Center weighted autofocus
Multi area autofocus
Live view autofocus
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Total focus points 11 25
Lens
Lens mount type Pentax KAF2 fixed lens
Lens zoom range - 35mm (1x)
Largest aperture - f/2.0-22.0
Total lenses 151 -
Focal length multiplier 1.5 1
Screen
Type of screen Fixed Type Fixed Type
Screen diagonal 2.7" 3"
Resolution of screen 230 thousand dots 1,229 thousand dots
Selfie friendly
Liveview
Touch functionality
Screen tech - Xtra FineTFT LCD
Viewfinder Information
Viewfinder Optical (pentaprism) Electronic and Optical (optional)
Viewfinder coverage 95% -
Viewfinder magnification 0.64x -
Features
Min shutter speed 30s 30s
Max shutter speed 1/4000s 1/4000s
Continuous shutter rate 3.0 frames per second 5.0 frames per second
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Set white balance
Image stabilization
Inbuilt flash
Flash distance 13.00 m (at ISO 100) 6.00 m
Flash modes Auto, Red-Eye, Slow, Red-Eye Slow, Rear curtain, wireless Auto, On, Off, Slow Sync
Hot shoe
AE bracketing
White balance bracketing
Max flash synchronize 1/180s 1/4000s
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions - 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 None 1920x1080
Video file format - MPEG-4, AVCHD
Microphone support
Headphone support
Connectivity
Wireless None Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 800 gr (1.76 lb) 482 gr (1.06 lb)
Physical dimensions 142 x 101 x 70mm (5.6" x 4.0" x 2.8") 113 x 65 x 70mm (4.4" x 2.6" x 2.8")
DXO scores
DXO Overall rating 65 93
DXO Color Depth rating 22.9 25.1
DXO Dynamic range rating 11.1 14.3
DXO Low light rating 639 2534
Other
Battery life - 270 shots
Form of battery - Battery Pack
Battery ID D-LI50 NP-BX1
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec)
Time lapse recording
Storage type SD/MMC/SDHC card SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
Card slots 1 1
Price at release $700 $2,798