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Pentax K-x vs Pentax E90

Portability
69
Imaging
52
Features
47
Overall
50
Pentax K-x front
 
Pentax Optio E90 front
Portability
94
Imaging
33
Features
11
Overall
24

Pentax K-x vs Pentax E90 Key Specs

Pentax K-x
(Full Review)
  • 12MP - APS-C Sensor
  • 2.7" Fixed Screen
  • 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
Pentax E90
(Full Review)
  • 10MP - 1/2.3" Sensor
  • 2.7" Fixed Display
  • ISO 80 - 3200
  • 1280 x 720 video
  • 32-95mm (F3.1-5.9) lens
  • 145g - 102 x 59 x 25mm
  • Launched January 2010
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Pentax K-x vs Pentax E90 Overview

On this page, we are comparing the Pentax K-x versus Pentax E90, former being a Entry-Level DSLR while the other is a Small Sensor Compact and both of them are produced by Pentax. The sensor resolution of the K-x (12MP) and the E90 (10MP) is very comparable but the K-x (APS-C) and E90 (1/2.3") provide different sensor measurements.

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The K-x was revealed at a similar time to the E90 which means that they are both of a similar age. Each of these cameras have different body design with the Pentax K-x being a Compact SLR camera and the Pentax E90 being a Compact camera.

Before delving straight to a detailed comparison, here is a brief summation of how the K-x scores against the E90 when it comes to portability, imaging, features and an overall grade.

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Reasons to pick Pentax K-x over the Pentax E90

 K-x E90 
Focus manually More precise focus

Reasons to pick Pentax E90 over the Pentax K-x

 E90 K-x 

Common features in the Pentax K-x and Pentax E90

 K-x E90 
LaunchedDecember 2009January 2010Same age
Display typeFixed Fixed Fixed display
Display dimensions2.7"2.7"Equal display measurements
Display resolution230k230kSame display resolution
Selfie screen Missing selfie screen
Touch display Missing Touch display

Pentax K-x vs Pentax E90 Physical Comparison

When you are aiming to lug around your camera regularly, you have to consider its weight and size. The Pentax K-x enjoys exterior dimensions of 123mm x 92mm x 68mm (4.8" x 3.6" x 2.7") with a weight of 580 grams (1.28 lbs) and the Pentax E90 has specifications of 102mm x 59mm x 25mm (4.0" x 2.3" x 1.0") along with a weight of 145 grams (0.32 lbs).

Look at the Pentax K-x versus Pentax E90 in our completely new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Always remember, the weight of an ILC will change depending on the lens you choose at that moment. Below is a front view over all size comparison of the K-x compared to the E90.

Pentax K-x vs Pentax E90 size comparison

Taking into account size and weight, the portability rating of the K-x and E90 is 69 and 94 respectively.

Pentax K-x vs Pentax E90 top view buttons comparison

Pentax K-x vs Pentax E90 Sensor Comparison

Oftentimes, its tough to imagine the gap in sensor measurements merely by going through technical specs. The visual underneath will provide you a stronger sense of the sensor dimensions in the K-x and E90.

As you can tell, the two cameras have different megapixels and different sensor measurements. The K-x using its larger sensor is going to make achieving bokeh less difficult and the Pentax K-x will show greater detail because of its extra 2MP. Greater resolution will let you crop images a bit more aggressively.

Pentax K-x vs Pentax E90 sensor size comparison

Pentax K-x vs Pentax E90 Screen and ViewFinder

Pentax K-x vs Pentax E90 Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Pentax K-x Portrait photography advice
Pentax E90 Portrait photography advice
63
has manual focus
sensor size is nice (APS-C)
features face detect focusing
saves RAW files
sensor resolution low (12 megapixels)
19
focusing manually not possible
no manual exposure
cannot use external flash
low megapixels (10MP)
small sensor (1/2.3")
no RAW support
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Street Comparison

Pentax K-x Street photography features
Pentax E90 Street photography features
67
built in image stabilization (Sensor based)
sensor size is nice (APS-C)
saves RAW files
no moving screen
47
no articulating screen
does not have image stabilization
small sensor (1/2.3")
no RAW support
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Sports Comparison

Pentax K-x Sports photography highlights
Pentax E90 Sports photography highlights
61
maximum shutter speed is high (1/6,000s)
built in image stabilization (Sensor based)
sensor size is nice (APS-C)
better than average battery (1,900 shots)
supports phase detect AF
slow continuous shooting (5.0 fps)
sensor resolution low (12MP)
16
no shutter priority mode
does not have image stabilization
low megapixels (10 megapixels)
small sensor (1/2.3")
no phase detect autofocus
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Travel Comparison

Travel photography with Pentax K-x
Travel photography with Pentax E90
54
better than average battery (1,900 shots)
built-in flash
doesn't have Timelapse recording
sensor resolution low (12 megapixels)
display isn't selfie friendly
50
flash built-in
does not have Time Lapse mode
low megapixels (10MP)
screen is not selfie friendly
wide angle not the best (32mm)
sluggish max aperture (f3.1)
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Landscape Comparison

Pentax K-x Landscape photography features
Pentax E90 Landscape photography features
61
has manual focus
interchangeable lenses (Pentax KAF2 mount)
built in image stabilization (Sensor based)
sensor size is nice (APS-C)
saves RAW files
better than average battery (1,900 CIPA)
small screen (2.7")
sensor resolution low (12 megapixels)
doesn't have Timelapse recording
22
focusing manually not possible
fixed lens (fixed lens mount)
wide angle not the best (32mm)
sluggish max aperture (f3.1)
tiny screen (2.7 inch)
no manual exposure
does not have image stabilization
low megapixels (10MP)
small sensor (1/2.3")
no RAW support
does not have Time Lapse mode
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Vlogging Comparison

Pentax K-x Vlogging highlights
Pentax E90 Vlogging highlights
27
built in image stabilization (Sensor based)
features face detect focusing
display isn't selfie friendly
low res video (1280 x 720 pxls)
doesn't have microphone port
22
wide angle not the best (32mm)
sluggish max aperture (f3.1)
screen is not selfie friendly
does not have image stabilization
video quality not great (1280 x 720 pxls)
does not have mic support
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Pentax K-x vs Pentax E90 Specifications

Detailed spec comparison table for Pentax K-x and Pentax E90
 Pentax K-xPentax Optio E90
General Information
Brand Name Pentax Pentax
Model type Pentax K-x Pentax Optio E90
Category Entry-Level DSLR Small Sensor Compact
Revealed 2009-12-23 2010-01-25
Physical type Compact SLR Compact
Sensor Information
Processor Chip Prime Prime
Sensor type CMOS CCD
Sensor size APS-C 1/2.3"
Sensor dimensions 23.6 x 15.8mm 6.08 x 4.56mm
Sensor surface area 372.9mm² 27.7mm²
Sensor resolution 12 megapixels 10 megapixels
Anti alias filter
Aspect ratio 3:2 4:3 and 16:9
Max resolution 4288 x 2848 3648 x 2736
Max native ISO 6400 3200
Max enhanced ISO 12800 -
Minimum native ISO 100 80
RAW format
Autofocusing
Focus manually
Autofocus touch
Autofocus continuous
Autofocus single
Autofocus tracking
Autofocus selectice
Autofocus center weighted
Multi area autofocus
Live view autofocus
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Total focus points 11 3
Lens
Lens support Pentax KAF2 fixed lens
Lens zoom range - 32-95mm (3.0x)
Maximum aperture - f/3.1-5.9
Macro focusing distance - 6cm
Total lenses 151 -
Focal length multiplier 1.5 5.9
Screen
Type of screen Fixed Type Fixed Type
Screen sizing 2.7 inches 2.7 inches
Screen resolution 230k dots 230k dots
Selfie friendly
Liveview
Touch function
Screen technology TFT LCD monitor -
Viewfinder Information
Viewfinder type Optical (pentamirror) None
Viewfinder coverage 96 percent -
Viewfinder magnification 0.57x -
Features
Minimum shutter speed 30 seconds 4 seconds
Fastest shutter speed 1/6000 seconds 1/2000 seconds
Continuous shutter rate 5.0fps -
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes -
Change white balance
Image stabilization
Integrated flash
Flash distance 16.00 m 3.50 m
Flash settings Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless -
Hot shoe
AEB
WB bracketing
Fastest flash synchronize 1/180 seconds -
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions 1280 x 720 (24 fps), 640 x 416 (24 fps) 1280 x 720 (15 fps), 848 x 480 (30 fps), 640 x 480 (30 fps), 320 x 240 (30 fps)
Max video resolution 1280x720 1280x720
Video file format Motion JPEG Motion JPEG
Mic support
Headphone support
Connectivity
Wireless None None
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 580 gr (1.28 lb) 145 gr (0.32 lb)
Physical dimensions 123 x 92 x 68mm (4.8" x 3.6" x 2.7") 102 x 59 x 25mm (4.0" 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 pictures -
Style of battery Battery Pack -
Battery ID 4 x AA 2 x AA
Self timer Yes (2 or 12 sec) Yes (2 or 10 sec)
Time lapse recording
Type of storage SD/SDHC card SD/SDHC, Internal
Card slots 1 1
Price at release $600 $100