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Pentax K-x vs Sony RX100 II

Portability
69
Imaging
52
Features
47
Overall
50
Pentax K-x front
 
Sony Cyber-shot DSC-RX100 II front
Portability
89
Imaging
50
Features
74
Overall
59

Pentax K-x vs Sony RX100 II Key Specs

Pentax K-x
(Full Review)
  • 12MP - APS-C Sensor
  • 2.7" Fixed Display
  • ISO 100 - 6400 (Expand to 12800)
  • Sensor based Image Stabilization
  • 1/6000s Max Shutter
  • 1280 x 720 video
  • Pentax KAF2 Mount
  • 580g - 123 x 92 x 68mm
  • Revealed December 2009
Sony RX100 II
(Full Review)
  • 20MP - 1" Sensor
  • 3" Tilting Display
  • ISO 160 - 12800 (Raise to 25600)
  • Optical Image Stabilization
  • 1920 x 1080 video
  • 28-100mm (F1.8-4.9) lens
  • 281g - 102 x 58 x 38mm
  • Launched June 2013
  • Succeeded the Sony RX100
  • Newer Model is Sony RX100 III
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Pentax K-x vs Sony RX100 II Overview

Its time to take a deeper look at the Pentax K-x versus Sony RX100 II, former is a Entry-Level DSLR while the other is a Large Sensor Compact by rivals Pentax and Sony. There is a large difference between the sensor resolutions of the K-x (12MP) and RX100 II (20MP) and the K-x (APS-C) and RX100 II (1") possess totally different sensor sizes.

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The K-x was manufactured 4 years before the RX100 II which is quite a serious difference as far as tech is concerned. Both of these cameras offer different body type with the Pentax K-x being a Compact SLR camera and the Sony RX100 II being a Large Sensor Compact camera.

Before delving through a detailed comparison, below is a simple overview of how the K-x scores against the RX100 II with regards to portability, imaging, features and an overall mark.

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Reasons to pick Pentax K-x over the Sony RX100 II

 K-x RX100 II 

Reasons to pick Sony RX100 II over the Pentax K-x

 RX100 II K-x 
LaunchedJune 2013December 2009Newer by 42 months
Display typeTiltingFixed Tilting display
Display sizing3"2.7"Larger display (+0.3")
Display resolution1229k230kSharper display (+999k dot)

Common features in the Pentax K-x and Sony RX100 II

 K-x RX100 II 
Focus manually More exact focusing
Selfie screen Neither includes selfie screen
Touch display Neither includes Touch display

Pentax K-x vs Sony RX100 II Physical Comparison

If you're planning to travel with your camera frequently, you will want to factor its weight and size. The Pentax K-x features outside measurements of 123mm x 92mm x 68mm (4.8" x 3.6" x 2.7") along with a weight of 580 grams (1.28 lbs) and the Sony RX100 II has specifications of 102mm x 58mm x 38mm (4.0" x 2.3" x 1.5") with a weight of 281 grams (0.62 lbs).

Check out the Pentax K-x versus Sony RX100 II in our completely new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into account, the weight of an ILC will differ based on the lens you are utilizing at that time. Below is the front view size comparison of the K-x vs the RX100 II.

Pentax K-x vs Sony RX100 II size comparison

Taking into account size and weight, the portability score of the K-x and RX100 II is 69 and 89 respectively.

Pentax K-x vs Sony RX100 II top view buttons comparison

Pentax K-x vs Sony RX100 II Sensor Comparison

Generally, its difficult to visualise the gap between sensor dimensions simply by checking specifications. The pic underneath may give you a greater sense of the sensor sizing in the K-x and RX100 II.

Plainly, the 2 cameras enjoy different resolutions and different sensor dimensions. The K-x featuring a larger sensor will make getting shallow DOF less difficult and the Sony RX100 II will give extra detail due to its extra 8 Megapixels. Greater resolution can also allow you to crop pics far more aggressively. The more aged K-x is going to be behind in sensor technology.

Pentax K-x vs Sony RX100 II sensor size comparison

Pentax K-x vs Sony RX100 II Screen and ViewFinder

Pentax K-x vs Sony RX100 II Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Pentax K-x Portrait photography details
Sony RX100 II Portrait photography details
63
manual focus
sensor size is nice (APS-C)
has face detect autofocus
saves RAW files
low megapixels (12 megapixels)
70
manual focus
high flash sync speed (1/2,000 seconds)
megapixel count good (20 megapixels)
sensor size is decent (1")
provides face detect autofocus
supports RAW formats
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Street Comparison

Pentax K-x as a Street photography camera
Sony RX100 II as a Street photography camera
67
image stabilization (Sensor based)
sensor size is nice (APS-C)
saves RAW files
fixed screen
85
screen tilts up and down
built in image stabilization (Optical)
sensor size is decent (1")
supports RAW formats
lighter than competitors in class (281 grams)
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Sports Comparison

Pentax K-x as a Sports photography camera
Sony RX100 II as a Sports photography camera
61
max shutter speed is good (1/6,000 seconds)
image stabilization (Sensor based)
sensor size is nice (APS-C)
better than average battery (1,900 per charge)
supports phase detect autofocus
max frames per second very slow (5.0 frames per second)
low megapixels (12 megapixels)
66
built in image stabilization (Optical)
megapixel count good (20MP)
sensor size is decent (1")
provides tracking focus
better than average battery pack (350 per charge)
no phase detect autofocus
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Travel Comparison

Pentax K-x Travel photography details
Sony RX100 II Travel photography details
54
better than average battery (1,900 CIPA)
has built in flash
missing Timelapse recording
low megapixels (12 megapixels)
doesn't feature selfie friendly display
79
better than average battery pack (350 shots)
lighter than competitors in class (281g)
megapixel count good (20MP)
built-in flash
decently wide (28mm)
very good max aperture (f1.8)
does not have selfie friendly display
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Landscape Comparison

Pentax K-x as a Landscape photography camera
Sony RX100 II as a Landscape photography camera
61
manual focus
switch lenses (Pentax KAF2 mount)
image stabilization (Sensor based)
sensor size is nice (APS-C)
saves RAW files
better than average battery (1,900 shots)
small screen (2.7 inch)
low megapixels (12MP)
missing Timelapse recording
73
manual focus
decently wide (28mm)
very good max aperture (f1.8)
good sized screen (3 inches)
built in image stabilization (Optical)
megapixel count good (20 megapixels)
sensor size is decent (1")
supports RAW formats
better than average battery pack (350 shots)
fixed lens (fixed lens mount)
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Vlogging Comparison

Vlogging with Pentax K-x
Vlogging with Sony RX100 II
27
image stabilization (Sensor based)
has face detect autofocus
doesn't feature selfie friendly display
video resolution low (1280 x 720 pixels)
missing microphone jack
37
decently wide (28mm)
very good max aperture (f1.8)
built in image stabilization (Optical)
provides face detect autofocus
good video quality (1920 x 1080 pxls)
lighter than competitors in class (281g)
does not have selfie friendly display
does not have mic port
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Pentax K-x vs Sony RX100 II Specifications

Detailed spec comparison table for Pentax K-x and Sony RX100 II
 Pentax K-xSony Cyber-shot DSC-RX100 II
General Information
Brand Name Pentax Sony
Model type Pentax K-x Sony Cyber-shot DSC-RX100 II
Category Entry-Level DSLR Large Sensor Compact
Revealed 2009-12-23 2013-06-27
Body design Compact SLR Large Sensor Compact
Sensor Information
Processor Prime -
Sensor type CMOS CMOS
Sensor size APS-C 1"
Sensor dimensions 23.6 x 15.8mm 13.2 x 8.8mm
Sensor area 372.9mm² 116.2mm²
Sensor resolution 12 megapixel 20 megapixel
Anti alias filter
Aspect ratio 3:2 1:1, 4:3, 3:2 and 16:9
Highest Possible resolution 4288 x 2848 5472 x 3648
Maximum native ISO 6400 12800
Maximum enhanced ISO 12800 25600
Min native ISO 100 160
RAW support
Min enhanced ISO - 100
Autofocusing
Focus manually
Touch to focus
Continuous autofocus
Autofocus single
Autofocus tracking
Selective autofocus
Autofocus center weighted
Autofocus multi area
Autofocus live view
Face detect focus
Contract detect focus
Phase detect focus
Total focus points 11 25
Lens
Lens support Pentax KAF2 fixed lens
Lens zoom range - 28-100mm (3.6x)
Max aperture - f/1.8-4.9
Macro focusing distance - 5cm
Available lenses 151 -
Focal length multiplier 1.5 2.7
Screen
Display type Fixed Type Tilting
Display size 2.7 inch 3 inch
Resolution of display 230 thousand dot 1,229 thousand dot
Selfie friendly
Liveview
Touch friendly
Display technology TFT LCD monitor Xtra Fine WhiteMagic TFT LCD
Viewfinder Information
Viewfinder type Optical (pentamirror) Electronic (optional)
Viewfinder coverage 96% -
Viewfinder magnification 0.57x -
Features
Min shutter speed 30 seconds 30 seconds
Max shutter speed 1/6000 seconds 1/2000 seconds
Continuous shutter speed 5.0 frames per sec 10.0 frames per sec
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Set white balance
Image stabilization
Built-in flash
Flash distance 16.00 m 15.00 m (ISO Auto (W))
Flash settings Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless Auto, On, Off, Slow Sync
External flash
Auto exposure bracketing
White balance bracketing
Max 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 1280 x 720 (24 fps), 640 x 416 (24 fps) 1920 x 1080 (60 fps), 640 x 480 (30 fps)
Maximum video resolution 1280x720 1920x1080
Video format Motion JPEG MPEG-4, AVCHD
Mic jack
Headphone jack
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
Environmental seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 580 gr (1.28 lb) 281 gr (0.62 lb)
Dimensions 123 x 92 x 68mm (4.8" x 3.6" x 2.7") 102 x 58 x 38mm (4.0" x 2.3" x 1.5")
DXO scores
DXO Overall rating 72 67
DXO Color Depth rating 22.8 22.5
DXO Dynamic range rating 12.5 12.4
DXO Low light rating 811 483
Other
Battery life 1900 shots 350 shots
Style of battery Battery Pack Battery Pack
Battery ID 4 x AA NP-BX1
Self timer Yes (2 or 12 sec) Yes (10 sec. / 2 sec. / Self-portrait One-person/ Self-portrait Two-person/ Self timer Continuous (3 or 5 shots))
Time lapse shooting With downloadable app
Type of storage SD/SDHC card SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
Storage slots One One
Retail price $600 $598