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Pentax K-x vs Sony H55

Portability
69
Imaging
51
Features
47
Overall
49
Pentax K-x front
 
Sony Cyber-shot DSC-H55 front
Portability
92
Imaging
36
Features
28
Overall
32

Pentax K-x vs Sony H55 Key Specs

Pentax K-x
(Full Review)
  • 12MP - APS-C Sensor
  • 2.7" Fixed Display
  • ISO 100 - 6400 (Bump to 12800)
  • Sensor based Image Stabilization
  • 1/6000s Maximum Shutter
  • 1280 x 720 video
  • Pentax KAF2 Mount
  • 580g - 123 x 92 x 68mm
  • Announced December 2009
Sony H55
(Full Review)
  • 14MP - 1/2.3" Sensor
  • 3" Fixed Screen
  • ISO 80 - 3200
  • Optical Image Stabilization
  • 1280 x 720 video
  • 25-250mm (F3.5-5.5) lens
  • 200g - 103 x 58 x 29mm
  • Revealed June 2010
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Pentax K-x vs Sony H55 Overview

In this article, we will be analyzing the Pentax K-x vs Sony H55, one is a Entry-Level DSLR and the latter is a Small Sensor Compact by competitors Pentax and Sony. The sensor resolution of the K-x (12MP) and the H55 (14MP) is relatively close but the K-x (APS-C) and H55 (1/2.3") possess different sensor dimensions.

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The K-x was manufactured 5 months earlier than the H55 and they are of a similar generation. Both cameras offer different body type with the Pentax K-x being a Compact SLR camera and the Sony H55 being a Compact camera.

Before diving through a in-depth comparison, below is a brief summation of how the K-x scores against the H55 in relation to portability, imaging, features and an overall score.

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Reasons to pick Pentax K-x over the Sony H55

 K-x H55 
Focus manually Very precise focusing

Reasons to pick Sony H55 over the Pentax K-x

 H55 K-x 
Screen sizing3"2.7"Bigger screen (+0.3")

Common features in the Pentax K-x and Sony H55

 K-x H55 
RevealedDecember 2009June 2010Same generation
Screen typeFixed Fixed Fixed screen
Screen resolution230k230kExact same screen resolution
Selfie screen Missing selfie screen
Touch screen Missing Touch screen

Pentax K-x vs Sony H55 Physical Comparison

For anyone who is intending to carry around your camera frequently, you'll have to factor in its weight and measurements. The Pentax K-x has got physical 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) whilst the Sony H55 has proportions of 103mm x 58mm x 29mm (4.1" x 2.3" x 1.1") with a weight of 200 grams (0.44 lbs).

Examine the Pentax K-x vs Sony H55 in the latest Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Do not forget, the weight of an Interchangeable Lens Camera will vary based on the lens you are employing during that time. Following is the front view measurement comparison of the K-x vs the H55.

Pentax K-x vs Sony H55 size comparison

Factoring in size and weight, the portability score of the K-x and H55 is 69 and 92 respectively.

Pentax K-x vs Sony H55 top view buttons comparison

Pentax K-x vs Sony H55 Sensor Comparison

In many cases, it is very tough to picture the contrast in sensor sizes only by looking through technical specs. The picture here might offer you a better sense of the sensor sizes in the K-x and H55.

As you can tell, both the cameras offer different megapixel count and different sensor sizes. The K-x due to its bigger sensor is going to make shooting bokeh less difficult and the Sony H55 will provide you with extra detail due to its extra 2MP. Higher resolution can also help you crop photographs a little more aggressively.

Pentax K-x vs Sony H55 sensor size comparison

Pentax K-x vs Sony H55 Screen and ViewFinder

Pentax K-x vs Sony H55 Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Pentax K-x as a Portrait photography camera
Sony H55 as a Portrait photography camera
62
you can focus manually
good sensor size (APS-C)
comes with face detect autofocus
delivers RAW files
megapixel count low (12 megapixels)
28
MP count good (14 megapixels)
lack of manual focus
manual exposure not available
cannot use external flash
sensor is very small (1/2.3")
does not have RAW format
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Street Comparison

Pentax K-x Street photography details
Sony H55 Street photography details
67
image stabilization (Sensor based)
good sensor size (APS-C)
delivers RAW files
screen is fixed
56
has image stabilization (Optical)
screen does not articulate
sensor is very small (1/2.3")
does not have RAW format
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Sports Comparison

Pentax K-x Sports photography info
Sony H55 Sports photography info
61
high shutter speed (1/6,000s)
image stabilization (Sensor based)
good sensor size (APS-C)
great battery life (1,900 shots)
sensor has phase detect autofocus
max frames per second very slow (5.0 frames/s)
megapixel count low (12 megapixels)
38
has image stabilization (Optical)
MP count good (14MP)
lack of shutter priority mode
sensor is very small (1/2.3")
does not have phase detect AF
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Travel Comparison

Pentax K-x as a Travel photography camera
Sony H55 as a Travel photography camera
53
great battery life (1,900 shots)
has built in flash
no Time Lapse function
megapixel count low (12 megapixels)
screen isn't selfie friendly
66
MP count good (14MP)
flash built-in
quite wide (25mm)
very long zoom (250mm)
doesn't have Time Lapse function
doesn't have a selfie friendly display
slow maximum aperture (f3.5)
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Landscape Comparison

Landscape photography with Pentax K-x
Landscape photography with Sony H55
60
you can focus manually
change lenses (Pentax KAF2 mount)
image stabilization (Sensor based)
good sensor size (APS-C)
delivers RAW files
great battery life (1,900 shots)
screen is small (2.7 inches)
megapixel count low (12MP)
no Time Lapse function
41
quite wide (25mm)
screen size is good (3")
has image stabilization (Optical)
MP count good (14 megapixels)
lack of manual focus
lens is fixed (fixed lens mount)
slow maximum aperture (f3.5)
manual exposure not available
sensor is very small (1/2.3")
does not have RAW format
doesn't have Time Lapse function
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Vlogging Comparison

Pentax K-x Vlogging details
Sony H55 Vlogging details
26
image stabilization (Sensor based)
comes with face detect autofocus
screen isn't selfie friendly
video res low (1280 x 720 resolution)
no mic port
28
quite wide (25mm)
has image stabilization (Optical)
slow maximum aperture (f3.5)
doesn't have a selfie friendly display
low video resolution (1280 x 720 pixels)
doesn't have external mic support
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Pentax K-x vs Sony H55 Specifications

Detailed spec comparison table for Pentax K-x and Sony H55
 Pentax K-xSony Cyber-shot DSC-H55
General Information
Brand Pentax Sony
Model Pentax K-x Sony Cyber-shot DSC-H55
Category Entry-Level DSLR Small Sensor Compact
Announced 2009-12-23 2010-06-16
Physical type Compact SLR Compact
Sensor Information
Powered by Prime Bionz
Sensor type CMOS CCD
Sensor size APS-C 1/2.3"
Sensor dimensions 23.6 x 15.8mm 6.17 x 4.55mm
Sensor area 372.9mm² 28.1mm²
Sensor resolution 12MP 14MP
Anti aliasing filter
Aspect ratio 3:2 4:3 and 16:9
Maximum resolution 4288 x 2848 4320 x 3240
Maximum native ISO 6400 3200
Maximum boosted ISO 12800 -
Lowest native ISO 100 80
RAW photos
Autofocusing
Manual focus
Touch focus
Continuous autofocus
Single autofocus
Tracking autofocus
Selective autofocus
Autofocus center weighted
Autofocus multi area
Autofocus live view
Face detect focus
Contract detect focus
Phase detect focus
Number of focus points 11 9
Lens
Lens mounting type Pentax KAF2 fixed lens
Lens focal range - 25-250mm (10.0x)
Largest aperture - f/3.5-5.5
Macro focus distance - 5cm
Number of lenses 151 -
Crop factor 1.5 5.8
Screen
Display type Fixed Type Fixed Type
Display diagonal 2.7 inch 3 inch
Display resolution 230k dots 230k dots
Selfie friendly
Liveview
Touch display
Display technology TFT LCD monitor -
Viewfinder Information
Viewfinder Optical (pentamirror) None
Viewfinder coverage 96 percent -
Viewfinder magnification 0.57x -
Features
Slowest shutter speed 30 seconds 30 seconds
Maximum shutter speed 1/6000 seconds 1/1600 seconds
Continuous shooting rate 5.0 frames per second 10.0 frames per second
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes -
Custom white balance
Image stabilization
Integrated flash
Flash range 16.00 m 3.80 m
Flash settings Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless Auto, On, Slow Syncro, Off
External flash
Auto exposure bracketing
White balance bracketing
Maximum flash synchronize 1/180 seconds -
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions 1280 x 720 (24 fps), 640 x 416 (24 fps) 1280 x 720 (30 fps), 640 x 480 (30 fps)
Maximum video resolution 1280x720 1280x720
Video data format Motion JPEG MPEG-4
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
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 580g (1.28 lbs) 200g (0.44 lbs)
Dimensions 123 x 92 x 68mm (4.8" x 3.6" x 2.7") 103 x 58 x 29mm (4.1" x 2.3" x 1.1")
DXO scores
DXO All around score 72 not tested
DXO Color Depth score 22.8 not tested
DXO Dynamic range score 12.5 not tested
DXO Low light score 811 not tested
Other
Battery life 1900 images -
Battery style Battery Pack -
Battery model 4 x AA NP-BG1
Self timer Yes (2 or 12 sec) Yes (2 or 10 sec, portrait1/ portrait2)
Time lapse feature
Type of storage SD/SDHC card Memory Stick Duo / Pro Duo/ PRO HG-Duo, SD/SDHC, Internal
Card slots Single Single
Retail pricing $600 $235