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Pentax K-x vs Pentax W90

Portability
69
Imaging
52
Features
47
Overall
50
Pentax K-x front
 
Pentax Optio W90 front
Portability
94
Imaging
35
Features
21
Overall
29

Pentax K-x vs Pentax W90 Key Specs

Pentax K-x
(Full Review)
  • 12MP - APS-C Sensor
  • 2.7" Fixed Display
  • ISO 100 - 6400 (Increase to 12800)
  • Sensor based Image Stabilization
  • 1/6000s Maximum Shutter
  • 1280 x 720 video
  • Pentax KAF2 Mount
  • 580g - 123 x 92 x 68mm
  • Released December 2009
Pentax W90
(Full Review)
  • 12MP - 1/2.3" Sensor
  • 2.7" Fixed Display
  • ISO 80 - 6400
  • 1280 x 720 video
  • 28-140mm (F3.5-5.5) lens
  • 164g - 108 x 59 x 25mm
  • Introduced February 2010
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Pentax K-x vs Pentax W90 Overview

Below, we are matching up the Pentax K-x vs Pentax W90, former being a Entry-Level DSLR while the other is a Waterproof and both are sold by Pentax. The sensor resolution of the K-x (12MP) and the W90 (12MP) is fairly comparable but the K-x (APS-C) and W90 (1/2.3") feature totally different sensor sizes.

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The K-x was unveiled 2 months before the W90 and they are both of a similar age. Both cameras come with different body type with the Pentax K-x being a Compact SLR camera and the Pentax W90 being a Compact camera.

Before going through a in-depth comparison, below is a simple synopsis of how the K-x matches up versus the W90 with respect to portability, imaging, features and an overall rating.

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Reasons to pick Pentax K-x over the Pentax W90

 K-x W90 

Reasons to pick Pentax W90 over the Pentax K-x

 W90 K-x 

Common features in the Pentax K-x and Pentax W90

 K-x W90 
IntroducedDecember 2009February 2010Same age
Manual focus Dial accurate focus
Display typeFixed Fixed Fixed display
Display dimension2.7"2.7"Identical display dimensions
Display resolution230k230kIdentical display resolution
Selfie screen No selfie screen
Touch display No Touch display

Pentax K-x vs Pentax W90 Physical Comparison

When you are planning to carry your camera, you will need to think about its weight and proportions. The Pentax K-x has got external dimensions 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 Pentax W90 has measurements of 108mm x 59mm x 25mm (4.3" x 2.3" x 1.0") and a weight of 164 grams (0.36 lbs).

See the Pentax K-x vs Pentax W90 in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Bear in mind, the weight of an ILC will differ based on the lens you choose at that time. Here is the front view size comparison of the K-x vs the W90.

Pentax K-x vs Pentax W90 size comparison

Looking at size and weight, the portability score of the K-x and W90 is 69 and 94 respectively.

Pentax K-x vs Pentax W90 top view buttons comparison

Pentax K-x vs Pentax W90 Sensor Comparison

Generally, it is tough to see the difference in sensor sizing just by seeing technical specs. The visual underneath might provide you a stronger sense of the sensor sizes in the K-x and W90.

As you have seen, each of these cameras have got the exact same resolution but not the same sensor sizing. The K-x uses the larger sensor which will make getting shallower depth of field less difficult.

Pentax K-x vs Pentax W90 sensor size comparison

Pentax K-x vs Pentax W90 Screen and ViewFinder

Pentax K-x vs Pentax W90 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-x Portrait photography features
Pentax W90 Portrait photography features
63
focusing manually
decent sensor size (APS-C)
features face detection autofocus
supports RAW files
low megapixels (12 megapixels)
27
focusing manually
no manual mode
external flash not possible
megapixel count low (12MP)
small sensor size (1/2.3")
doesn't have RAW files
Photography Glossary

Street Comparison

Pentax K-x as a Street photography camera
Pentax W90 as a Street photography camera
67
built in image stabilization (Sensor based)
decent sensor size (APS-C)
supports RAW files
no moving screen
54
weather proof
no moving screen
lack of image stabilization
small sensor size (1/2.3")
doesn't have RAW files
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Sports Comparison

Pentax K-x Sports photography features
Pentax W90 Sports photography features
61
high shutter speed (1/6,000s)
built in image stabilization (Sensor based)
decent sensor size (APS-C)
good battery pack (1,900 shots)
supports phase detect autofocus
continuous shooting slow (5.0 fps)
low megapixels (12 megapixels)
24
weather proof
very slow continuous shooting (1.0 frames per second)
no shutter priority
lack of image stabilization
megapixel count low (12 megapixels)
small sensor size (1/2.3")
doesn't have phase detect autofocus
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Travel Comparison

Pentax K-x Travel photography highlights
Pentax W90 Travel photography highlights
54
good battery pack (1,900 per charge)
has built in flash
no Time Lapse recording
low megapixels (12 megapixels)
does not offer selfie friendly screen
64
weather proof
built-in flash
decently wide (28mm)
megapixel count low (12 megapixels)
display is not selfie friendly
slow maximum aperture (f3.5)
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Landscape Comparison

Landscape photography with Pentax K-x
Landscape photography with Pentax W90
61
focusing manually
change lenses (Pentax KAF2 mount)
built in image stabilization (Sensor based)
decent sensor size (APS-C)
supports RAW files
good battery pack (1,900 shots)
tiny screen (2.7 inches)
low megapixels (12 megapixels)
no Time Lapse recording
37
focusing manually
decently wide (28mm)
weather proof
can't switch lens (fixed lens mount)
slow maximum aperture (f3.5)
screen is somewhat small (2.7 inch)
no manual mode
lack of image stabilization
megapixel count low (12MP)
small sensor size (1/2.3")
doesn't have RAW files
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Vlogging Comparison

Pentax K-x Vlogging details
Pentax W90 Vlogging details
27
built in image stabilization (Sensor based)
features face detection autofocus
does not offer selfie friendly screen
video resolution low (1280 x 720 pxls)
no external mic support
25
decently wide (28mm)
slow maximum aperture (f3.5)
display is not selfie friendly
lack of image stabilization
video resolution low (1280 x 720 pixels)
no external microphone jack
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Pentax K-x vs Pentax W90 Specifications

Detailed spec comparison table for Pentax K-x and Pentax W90
 Pentax K-xPentax Optio W90
General Information
Brand Pentax Pentax
Model type Pentax K-x Pentax Optio W90
Class Entry-Level DSLR Waterproof
Released 2009-12-23 2010-02-24
Body design Compact SLR Compact
Sensor Information
Chip Prime Prime
Sensor type CMOS CCD
Sensor size APS-C 1/2.3"
Sensor measurements 23.6 x 15.8mm 6.17 x 4.55mm
Sensor area 372.9mm² 28.1mm²
Sensor resolution 12 megapixel 12 megapixel
Anti alias filter
Aspect ratio 3:2 4:3, 3:2 and 16:9
Max resolution 4288 x 2848 4000 x 3000
Max native ISO 6400 6400
Max enhanced ISO 12800 -
Lowest native ISO 100 80
RAW files
Autofocusing
Manual focusing
Touch focus
Continuous AF
AF single
Tracking AF
Selective AF
AF center weighted
AF multi area
AF live view
Face detect focusing
Contract detect focusing
Phase detect focusing
Total focus points 11 9
Lens
Lens mount type Pentax KAF2 fixed lens
Lens zoom range - 28-140mm (5.0x)
Maximum aperture - f/3.5-5.5
Macro focusing range - 1cm
Amount of lenses 151 -
Crop factor 1.5 5.8
Screen
Range of display Fixed Type Fixed Type
Display diagonal 2.7 inch 2.7 inch
Resolution of display 230k dot 230k dot
Selfie friendly
Liveview
Touch function
Display tech TFT LCD monitor -
Viewfinder Information
Viewfinder Optical (pentamirror) None
Viewfinder coverage 96 percent -
Viewfinder magnification 0.57x -
Features
Min shutter speed 30 seconds 4 seconds
Max shutter speed 1/6000 seconds 1/1500 seconds
Continuous shutter speed 5.0 frames per second 1.0 frames per second
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes -
Custom WB
Image stabilization
Inbuilt flash
Flash distance 16.00 m 3.90 m
Flash options Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless Auto, On, Off, Red-eye, Soft
Hot shoe
Auto exposure bracketing
White balance bracketing
Max flash sync 1/180 seconds -
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 1280 x 720 (24 fps), 640 x 416 (24 fps) 1280 x 720 (30, 15 fps), 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps)
Max video resolution 1280x720 1280x720
Video format Motion JPEG Motion JPEG
Microphone input
Headphone input
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
Environment seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 580g (1.28 pounds) 164g (0.36 pounds)
Dimensions 123 x 92 x 68mm (4.8" x 3.6" x 2.7") 108 x 59 x 25mm (4.3" x 2.3" x 1.0")
DXO scores
DXO Overall rating 72 not tested
DXO Color Depth rating 22.8 not tested
DXO Dynamic range rating 12.5 not tested
DXO Low light rating 811 not tested
Other
Battery life 1900 images -
Battery format Battery Pack -
Battery ID 4 x AA D-LI68
Self timer Yes (2 or 12 sec) Yes (2 or 10 sec)
Time lapse feature
Storage media SD/SDHC card SD/SDHC card, Internal
Storage slots One One
Retail price $600 $120