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Pentax K-S2 vs Sony A390

Portability
64
Imaging
64
Features
82
Overall
71
Pentax K-S2 front
 
Sony Alpha DSLR-A390 front
Portability
66
Imaging
54
Features
54
Overall
54

Pentax K-S2 vs Sony A390 Key Specs

Pentax K-S2
(Full Review)
  • 20MP - APS-C Sensor
  • 3" Fully Articulated Screen
  • ISO 100 - 51200
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/6000s Maximum Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 678g - 123 x 91 x 73mm
  • Released February 2015
  • Old Model is Pentax K-S1
Sony A390
(Full Review)
  • 14MP - APS-C Sensor
  • 2.7" Tilting Screen
  • ISO 100 - 3200
  • Sensor based Image Stabilization
  • No Video
  • Sony/Minolta Alpha Mount
  • 549g - 128 x 97 x 86mm
  • Revealed July 2010
  • Older Model is Sony A380
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Pentax K-S2 vs Sony A390 Overview

Here is a extensive overview of the Pentax K-S2 versus Sony A390, both Entry-Level DSLR digital cameras by brands Pentax and Sony. There exists a crucial gap between the image resolutions of the K-S2 (20MP) and A390 (14MP) but they feature the exact same sensor dimensions (APS-C).

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The K-S2 was launched 4 years later than the A390 and that is quite a serious gap as far as technology is concerned. Each of the cameras come with the identical body type (Compact SLR).

Before getting in to a detailed comparison, below is a brief view of how the K-S2 grades vs the A390 in regards to portability, imaging, features and an overall rating.

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Reasons to pick Pentax K-S2 over the Sony A390

 K-S2 A390 
RevealedFebruary 2015July 2010Fresher by 56 months
Screen typeFully ArticulatedTiltingFully Articulating screen
Screen dimension3"2.7"Bigger screen (+0.3")
Screen resolution921k230kClearer screen (+691k dot)
Selfie screen Easy selfies

Reasons to pick Sony A390 over the Pentax K-S2

 A390 K-S2 

Common features in the Pentax K-S2 and Sony A390

 K-S2 A390 
Manual focus Dial exact focusing
Touch screen Neither features Touch screen

Pentax K-S2 vs Sony A390 Physical Comparison

For those who are looking to carry your camera frequently, you will want to consider its weight and proportions. The Pentax K-S2 enjoys outside dimensions of 123mm x 91mm x 73mm (4.8" x 3.6" x 2.9") accompanied by a weight of 678 grams (1.49 lbs) whilst the Sony A390 has measurements of 128mm x 97mm x 86mm (5.0" x 3.8" x 3.4") with a weight of 549 grams (1.21 lbs).

Compare the Pentax K-S2 versus Sony A390 in the new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Always remember, the weight of an Interchangeable Lens Camera will vary based on the lens you choose at that time. The following is the front view physical size comparison of the K-S2 compared to the A390.

Pentax K-S2 vs Sony A390 size comparison

Looking at dimensions and weight, the portability score of the K-S2 and A390 is 64 and 66 respectively.

Pentax K-S2 vs Sony A390 top view buttons comparison

Pentax K-S2 vs Sony A390 Sensor Comparison

Normally, it is very difficult to visualize the contrast between sensor sizing merely by looking at specifications. The photograph underneath will help give you a far better sense of the sensor dimensions in the K-S2 and A390.

Plainly, both of these cameras posses the exact same sensor measurements albeit different resolution. You should count on the Pentax K-S2 to give greater detail utilizing its extra 6 Megapixels. Higher resolution will also help you crop pictures somewhat more aggressively. The fresher K-S2 should have an edge in sensor innovation.

Pentax K-S2 vs Sony A390 sensor size comparison

Pentax K-S2 vs Sony A390 Screen and ViewFinder

Pentax K-S2 vs Sony A390 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with Pentax K-S2
Portrait photography with Sony A390
78
has manual focus
megapixel count good (20 megapixels)
sensor size is good (APS-C)
provides face detect focusing
delivers RAW files
72
has manual focus
decent megapixels (14 megapixels)
decent sensor size (APS-C)
has face detect focusing
exports RAW files
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Street Comparison

Pentax K-S2 as a Street photography camera
Sony A390 as a Street photography camera
72
screen articulates fully
has image stabilization (Sensor based)
sensor size is good (APS-C)
delivers RAW files
weather proofing
above average ISO range (51,200)
heavier than average in class (678g)
76
screen tilts up and down
built in image stabilization (Sensor based)
decent sensor size (APS-C)
exports RAW files
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Sports Comparison

Sports photography with Pentax K-S2
Sports photography with Sony A390
70
high shutter speed (1/6,000s)
has image stabilization (Sensor based)
megapixel count good (20MP)
sensor size is good (APS-C)
provides tracking focus
weather proofing
sensor has phase detect AF
very slow continuous shooting (5.4 frames/s)
bad battery life (410 CIPA)
60
built in image stabilization (Sensor based)
decent megapixels (14MP)
decent sensor size (APS-C)
has phase detect AF
slow continuous shooting (3.0 frames per second)
low battery power (230 CIPA)
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Travel Comparison

Pentax K-S2 as a Travel photography camera
Sony A390 as a Travel photography camera
65
weather proofing
megapixel count good (20MP)
flash built-in
selfie friendly display
bad battery life (410 shots)
heavier than average in class (678 grams)
53
decent megapixels (14 megapixels)
flash built-in
missing Timelapse recording
low battery power (230 shots)
screen isn't selfie friendly
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Landscape Comparison

Pentax K-S2 Landscape photography features
Sony A390 Landscape photography features
77
has manual focus
interchangeable lenses (Pentax KAF2 mount)
pretty good screen size (3 inch)
has image stabilization (Sensor based)
megapixel count good (20 megapixels)
sensor size is good (APS-C)
no low pass filter
above average ISO range (51,200)
delivers RAW files
weather proofing
bad battery life (410 CIPA)
61
has manual focus
swap lenses (Sony/Minolta Alpha mount)
built in image stabilization (Sensor based)
decent megapixels (14MP)
decent sensor size (APS-C)
exports RAW files
screen is somewhat small (2.7 inches)
low battery power (230 shots)
missing Timelapse recording
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Vlogging Comparison

Pentax K-S2 Vlogging features
Sony A390 Vlogging features
71
selfie friendly display
has image stabilization (Sensor based)
provides face detect focusing
high quality video (1920 x 1080 pxls)
includes mic socket
heavier than average in class (678g)
9
no video recording
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Pentax K-S2 vs Sony A390 Specifications

Detailed spec comparison table for Pentax K-S2 and Sony A390
 Pentax K-S2Sony Alpha DSLR-A390
General Information
Brand Pentax Sony
Model Pentax K-S2 Sony Alpha DSLR-A390
Class Entry-Level DSLR Entry-Level DSLR
Released 2015-02-10 2010-07-28
Body design Compact SLR Compact SLR
Sensor Information
Processor Chip PRIME MII Bionz
Sensor type CMOS CCD
Sensor size APS-C APS-C
Sensor measurements 23.5 x 15.6mm 23.5 x 15.7mm
Sensor area 366.6mm² 369.0mm²
Sensor resolution 20 megapixels 14 megapixels
Anti aliasing filter
Aspect ratio 3:2 3:2 and 16:9
Full resolution 5472 x 3648 4592 x 3056
Max native ISO 51200 3200
Lowest native ISO 100 100
RAW photos
Autofocusing
Manual focus
Touch focus
Autofocus continuous
Autofocus single
Tracking autofocus
Selective autofocus
Center weighted autofocus
Multi area autofocus
Autofocus live view
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Number of focus points 11 9
Lens
Lens mounting type Pentax KAF2 Sony/Minolta Alpha
Total lenses 151 143
Crop factor 1.5 1.5
Screen
Screen type Fully Articulated Tilting
Screen size 3" 2.7"
Resolution of screen 921 thousand dot 230 thousand dot
Selfie friendly
Liveview
Touch screen
Viewfinder Information
Viewfinder Optical (pentaprism) Optical (pentamirror)
Viewfinder coverage 100% 95%
Viewfinder magnification 0.64x 0.49x
Features
Lowest shutter speed 30 secs 30 secs
Highest shutter speed 1/6000 secs 1/4000 secs
Continuous shooting speed 5.4 frames per second 3.0 frames per second
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Custom white balance
Image stabilization
Inbuilt flash
Flash range 12.00 m (at ISO 100) 10.00 m (at ISO 100)
Flash options Auto, auto w/redeye reduction, flash on, flash on + redeye reduction, slow sync, trailing curtain sync, manual flash Auto, On, Off, Red-Eye, Slow Sync, Rear Curtain, Wireless
External flash
AE bracketing
WB bracketing
Highest flash sync - 1/160 secs
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions 1920 x 1080 (30p, 25p, 24p), 1280 x 720 (60p, 50p) -
Max video resolution 1920x1080 None
Video data format MPEG-4, H.264 -
Microphone input
Headphone input
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS Optional None
Physical
Environment seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 678g (1.49 pounds) 549g (1.21 pounds)
Dimensions 123 x 91 x 73mm (4.8" x 3.6" x 2.9") 128 x 97 x 86mm (5.0" x 3.8" x 3.4")
DXO scores
DXO All around score not tested 66
DXO Color Depth score not tested 22.5
DXO Dynamic range score not tested 11.5
DXO Low light score not tested 607
Other
Battery life 410 images 230 images
Type of battery Battery Pack Battery Pack
Battery model D-LI109 NP-FH50
Self timer Yes (2 or 12 secs) Yes (2 or 10 sec)
Time lapse recording
Type of storage SD/SDHC/SDXC SD/ SDHC, Memory Stick Pro Duo
Storage slots One One
Launch price $581 $500