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Pentax K-x vs Sony A77 II

Portability
69
Imaging
51
Features
47
Overall
49
Pentax K-x front
 
Sony SLT-A77 II front
Portability
62
Imaging
64
Features
85
Overall
72

Pentax K-x vs Sony A77 II Key Specs

Pentax K-x
(Full Review)
  • 12MP - APS-C Sensor
  • 2.7" Fixed Screen
  • ISO 100 - 6400 (Bump to 12800)
  • Sensor based Image Stabilization
  • 1/6000s Max Shutter
  • 1280 x 720 video
  • Pentax KAF2 Mount
  • 580g - 123 x 92 x 68mm
  • Released December 2009
Sony A77 II
(Full Review)
  • 24MP - APS-C Sensor
  • 3" Fully Articulated Display
  • ISO 50 - 25600
  • Sensor based Image Stabilization
  • 1/8000s Max Shutter
  • 1920 x 1080 video
  • Sony/Minolta Alpha Mount
  • 647g - 143 x 104 x 81mm
  • Released May 2014
  • Succeeded the Sony A77
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Pentax K-x vs Sony A77 II Overview

Below, we are analyzing the Pentax K-x and Sony A77 II, one being a Entry-Level DSLR and the other is a Advanced DSLR by brands Pentax and Sony. There exists a crucial gap among the resolutions of the K-x (12MP) and A77 II (24MP) but they possess the exact same sensor measurements (APS-C).

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The K-x was released 5 years before the A77 II and that is a fairly serious gap as far as camera technology is concerned. Both of these cameras come with different body type with the Pentax K-x being a Compact SLR camera and the Sony A77 II being a Mid-size SLR camera.

Before going in to a in depth comparison, below is a short summary of how the K-x matches up versus the A77 II in relation to portability, imaging, features and an overall rating.

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Reasons to pick Pentax K-x over the Sony A77 II

 K-x A77 II 

Reasons to pick Sony A77 II over the Pentax K-x

 A77 II K-x 
ReleasedMay 2014December 2009Fresher by 53 months
Display typeFully ArticulatedFixed Fully Articulating display
Display dimension3"2.7"Larger display (+0.3")
Display resolution1229k230kSharper display (+999k dot)
Selfie screen Easy selfies

Common features in the Pentax K-x and Sony A77 II

 K-x A77 II 
Manual focus More exact focusing
Touch friendly display Neither offers Touch friendly display

Pentax K-x vs Sony A77 II Physical Comparison

For anybody who is going to carry your camera frequently, you are going to need to factor in its weight and proportions. The Pentax K-x offers exterior 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) while the Sony A77 II has measurements of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") having a weight of 647 grams (1.43 lbs).

Examine the Pentax K-x and Sony A77 II in the new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Always remember, the weight of an Interchangeable Lens Camera will change based on the lens you are employing at that time. The following is the front view dimension comparison of the K-x and the A77 II.

Pentax K-x vs Sony A77 II size comparison

Factoring in dimensions and weight, the portability grade of the K-x and A77 II is 69 and 62 respectively.

Pentax K-x vs Sony A77 II top view buttons comparison

Pentax K-x vs Sony A77 II Sensor Comparison

Quite often, it can be hard to see the gap in sensor sizing merely by seeing a spec sheet. The photograph below may give you a more clear sense of the sensor sizing in the K-x and A77 II.

Clearly, both of the cameras have got the exact same sensor measurements but not the same megapixels. You should expect to see the Sony A77 II to show greater detail as a result of its extra 12 Megapixels. Greater resolution will help you crop pics much more aggressively. The older K-x will be behind when it comes to sensor tech.

Pentax K-x vs Sony A77 II sensor size comparison

Pentax K-x vs Sony A77 II Screen and ViewFinder

Pentax K-x vs Sony A77 II Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with Pentax K-x
Portrait photography with Sony A77 II
62
you can focus manually
nice sensor size (APS-C)
offers face detection focusing
exports RAW files
low megapixels (12 megapixels)
78
you can focus manually
decent MP (24MP)
good sensor size (APS-C)
comes with face detection autofocus
exports RAW files
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Street Comparison

Pentax K-x as a Street photography camera
Sony A77 II as a Street photography camera
67
built in image stabilization (Sensor based)
nice sensor size (APS-C)
exports RAW files
fixed screen
76
screen can move to multiple angles
has image stabilization (Sensor based)
good sensor size (APS-C)
exports RAW files
weather sealing
very good high ISO (25,600)
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Sports Comparison

Pentax K-x Sports photography details
Sony A77 II Sports photography details
61
high shutter speed (1/6,000 seconds)
built in image stabilization (Sensor based)
nice sensor size (APS-C)
great battery power (1,900 shots)
sensor has phase detect AF
max frames per second very slow (5.0 fps)
low megapixels (12 megapixels)
75
high shutter speed (1/8,000 seconds)
has image stabilization (Sensor based)
decent MP (24 megapixels)
good sensor size (APS-C)
comes with tracking autofocus
weather sealing
sensor has phase detect autofocus
bad battery power (480 CIPA)
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Travel Comparison

Travel photography with Pentax K-x
Travel photography with Sony A77 II
53
great battery power (1,900 shots)
has built in flash
no Timelapse mode
low megapixels (12MP)
doesn't feature selfie friendly screen
64
weather sealing
decent MP (24 megapixels)
flash built-in
screen is selfie friendly
does not have Timelapse mode
bad battery power (480 CIPA)
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Landscape Comparison

Pentax K-x Landscape photography information
Sony A77 II Landscape photography information
60
you can focus manually
swap lenses (Pentax KAF2 mount)
built in image stabilization (Sensor based)
nice sensor size (APS-C)
exports RAW files
great battery power (1,900 shots)
screen is small (2.7 inches)
low megapixels (12MP)
no Timelapse mode
72
you can focus manually
change lenses (Sony/Minolta Alpha mount)
nice screen size (3")
has image stabilization (Sensor based)
decent MP (24 megapixels)
good sensor size (APS-C)
very good high ISO (25,600)
exports RAW files
weather sealing
bad battery power (480 shots)
does not have Timelapse mode
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Vlogging Comparison

Pentax K-x Vlogging factors
Sony A77 II Vlogging factors
26
built in image stabilization (Sensor based)
offers face detection focusing
doesn't feature selfie friendly screen
low res video (1280 x 720 resolution)
no external microphone jack
77
screen is selfie friendly
has image stabilization (Sensor based)
comes with face detection autofocus
good video quality (1920 x 1080 pxls)
includes external microphone port
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Pentax K-x vs Sony A77 II Specifications

Detailed spec comparison table for Pentax K-x and Sony A77 II
 Pentax K-xSony SLT-A77 II
General Information
Manufacturer Pentax Sony
Model Pentax K-x Sony SLT-A77 II
Class Entry-Level DSLR Advanced DSLR
Released 2009-12-23 2014-05-21
Body design Compact SLR Mid-size SLR
Sensor Information
Powered by Prime Bionz X
Sensor type CMOS CMOS
Sensor size APS-C APS-C
Sensor measurements 23.6 x 15.8mm 23.5 x 15.6mm
Sensor area 372.9mm² 366.6mm²
Sensor resolution 12MP 24MP
Anti aliasing filter
Aspect ratio 3:2 3:2 and 16:9
Maximum resolution 4288 x 2848 6000 x 4000
Maximum native ISO 6400 25600
Maximum boosted ISO 12800 -
Min native ISO 100 50
RAW pictures
Autofocusing
Manual focus
AF touch
AF continuous
AF single
Tracking AF
Selective AF
Center weighted AF
Multi area AF
AF live view
Face detection focusing
Contract detection focusing
Phase detection focusing
Number of focus points 11 79
Cross focus points - 15
Lens
Lens mounting type Pentax KAF2 Sony/Minolta Alpha
Number of lenses 151 143
Crop factor 1.5 1.5
Screen
Screen type Fixed Type Fully Articulated
Screen size 2.7 inch 3 inch
Resolution of screen 230 thousand dot 1,229 thousand dot
Selfie friendly
Liveview
Touch friendly
Screen tech TFT LCD monitor -
Viewfinder Information
Viewfinder type Optical (pentamirror) Electronic
Viewfinder resolution - 2,359 thousand dot
Viewfinder coverage 96% 100%
Viewfinder magnification 0.57x 0.73x
Features
Lowest shutter speed 30s 30s
Highest shutter speed 1/6000s 1/8000s
Continuous shooting speed 5.0 frames per sec 12.0 frames per sec
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change WB
Image stabilization
Integrated flash
Flash range 16.00 m 12.00 m (at ISO 100)
Flash settings Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless Auto, fill, rear sync, slow sync
Hot shoe
AE bracketing
WB bracketing
Highest flash sync 1/180s 1/250s
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 (60p, 60i, 30p), 1440 x 1080 (30p), 640 x 480 (30p)
Maximum video resolution 1280x720 1920x1080
Video file format Motion JPEG MPEG-4, AVCHD, XAVC S
Microphone 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
Environment seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 580g (1.28 lbs) 647g (1.43 lbs)
Dimensions 123 x 92 x 68mm (4.8" x 3.6" x 2.7") 143 x 104 x 81mm (5.6" x 4.1" x 3.2")
DXO scores
DXO All around score 72 82
DXO Color Depth score 22.8 24.4
DXO Dynamic range score 12.5 13.4
DXO Low light score 811 1013
Other
Battery life 1900 pictures 480 pictures
Battery form Battery Pack Battery Pack
Battery model 4 x AA NP-FM500H
Self timer Yes (2 or 12 sec) Yes (Yes (2 or 12 sec))
Time lapse feature
Type of storage SD/SDHC card SD/ SDHC/SDXC, Memory Stick Pro Duo/ Pro-HG Duo
Storage slots One One
Price at launch $600 $1,198