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Pentax K-70 vs Sony A55

Portability
62
Imaging
67
Features
81
Overall
72
Pentax K-70 front
 
Sony SLT-A55 front
Portability
67
Imaging
56
Features
80
Overall
65

Pentax K-70 vs Sony A55 Key Specs

Pentax K-70
(Full Review)
  • 24MP - APS-C Sensor
  • 3" Fully Articulated Screen
  • ISO 100 - 102400
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/6000s Max Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 688g - 126 x 93 x 74mm
  • Launched June 2016
  • Refreshed by Pentax KF
Sony A55
(Full Review)
  • 16MP - APS-C Sensor
  • 3" Fully Articulated Screen
  • ISO 100 - 12800 (Push to 25600)
  • Sensor based Image Stabilization
  • 1920 x 1080 video
  • Sony/Minolta Alpha Mount
  • 500g - 124 x 92 x 85mm
  • Released August 2010
  • Refreshed by Sony A57
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Pentax K-70 vs Sony A55 Overview

Below, we will be matching up the Pentax K-70 versus Sony A55, both Entry-Level DSLR cameras by rivals Pentax and Sony. There is a big difference among the image resolutions of the K-70 (24MP) and A55 (16MP) but they come with the exact same sensor measurements (APS-C).

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The K-70 was unveiled 5 years after the A55 which is a fairly big gap as far as camera tech is concerned. Both of the cameras come with the identical body type (Compact SLR).

Before we go straight into a in-depth comparison, below is a short summation of how the K-70 matches up versus the A55 when considering portability, imaging, features and an overall score.

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Reasons to pick Pentax K-70 over the Sony A55

 K-70 A55 
ReleasedJune 2016August 2010More modern by 71 months

Reasons to pick Sony A55 over the Pentax K-70

 A55 K-70 

Common features in the Pentax K-70 and Sony A55

 K-70 A55 
Manual focus Dial precise focus
Screen typeFully ArticulatedFully ArticulatedFully Articulated screen
Screen dimension3"3"Identical screen measurements
Screen resolution921k921kSame screen resolution
Selfie screen Both are selfie friendly
Touch friendly screen Neither includes Touch friendly screen

Pentax K-70 vs Sony A55 Physical Comparison

For anybody who is planning to carry around your camera regularly, you will have to consider its weight and measurements. The Pentax K-70 features outer dimensions of 126mm x 93mm x 74mm (5.0" x 3.7" x 2.9") with a weight of 688 grams (1.52 lbs) whilst the Sony A55 has proportions of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") with a weight of 500 grams (1.10 lbs).

Analyze the Pentax K-70 versus Sony A55 in the all new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Do not forget, the weight of an Interchangeable Lens Camera will differ dependant on the lens you have chosen at that moment. Here is the front view dimension comparison of the K-70 compared to the A55.

Pentax K-70 vs Sony A55 size comparison

Considering size and weight, the portability score of the K-70 and A55 is 62 and 67 respectively.

Pentax K-70 vs Sony A55 top view buttons comparison

Pentax K-70 vs Sony A55 Sensor Comparison

In many cases, it can be tough to imagine the contrast in sensor sizes only by researching a spec sheet. The image here might offer you a much better sense of the sensor sizes in the K-70 and A55.

As you can see, the 2 cameras have got the exact same sensor measurements albeit different resolution. You should expect the Pentax K-70 to provide you with greater detail having an extra 8MP. Higher resolution will also enable you to crop pictures much more aggressively. The more modern K-70 provides an edge in sensor innovation.

Pentax K-70 vs Sony A55 sensor size comparison

Pentax K-70 vs Sony A55 Screen and ViewFinder

Pentax K-70 vs Sony A55 Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Portrait photography with Pentax K-70
Portrait photography with Sony A55
80
has manual focus
good MP (24MP)
sensor size is good (APS-C)
features face detection focus
saves RAW files
73
has manual focus
decent megapixels (16 megapixels)
sensor size is decent (APS-C)
features face detect focus
delivers RAW files
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Street Comparison

Street photography with Pentax K-70
Street photography with Sony A55
71
screen articulates
image stabilization (Sensor based)
sensor size is good (APS-C)
saves RAW files
weather proofing
great high ISO (102,400)
more heavy than others in class (688 grams)
77
fully articulated screen
has image stabilization (Sensor based)
sensor size is decent (APS-C)
delivers RAW files
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Sports Comparison

Pentax K-70 as a Sports photography camera
Sony A55 as a Sports photography camera
72
high shutter speed (1/6,000 seconds)
image stabilization (Sensor based)
good MP (24 megapixels)
sensor size is good (APS-C)
features tracking autofocus
weather proofing
sensor has phase detect auto focus
slow continuous shooting (6.0 fps)
low battery (410 per charge)
68
has image stabilization (Sensor based)
decent megapixels (16 megapixels)
sensor size is decent (APS-C)
supports phase detect auto focus
bad battery life (380 per charge)
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Travel Comparison

Pentax K-70 Travel photography highlights
Sony A55 Travel photography highlights
64
weather proofing
good MP (24 megapixels)
built-in flash
display is selfie friendly
low battery (410 shots)
more heavy than others in class (688g)
62
decent megapixels (16 megapixels)
has built in flash
selfie friendly screen
lack of Time Lapse recording
bad battery life (380 shots)
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Landscape Comparison

Pentax K-70 Landscape photography advice
Sony A55 Landscape photography advice
78
has manual focus
interchangeable lenses (Pentax KAF2 mount)
screen size is good (3 inches)
image stabilization (Sensor based)
good MP (24MP)
sensor size is good (APS-C)
doesnt have anti-alias filter
great high ISO (102,400)
saves RAW files
weather proofing
low battery (410 per charge)
67
has manual focus
swap lenses (Sony/Minolta Alpha mount)
nice screen size (3 inches)
has image stabilization (Sensor based)
decent megapixels (16MP)
sensor size is decent (APS-C)
delivers RAW files
bad battery life (380 per charge)
lack of Time Lapse recording
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Vlogging Comparison

Pentax K-70 Vlogging features
Sony A55 Vlogging features
71
display is selfie friendly
image stabilization (Sensor based)
features face detection focus
high quality video (1920 x 1080 pxls)
includes external microphone support
more heavy than others in class (688 grams)
78
selfie friendly screen
has image stabilization (Sensor based)
features face detect focus
video resolution high (1920 x 1080 resolution)
comes with mic port
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Pentax K-70 vs Sony A55 Specifications

Detailed spec comparison table for Pentax K-70 and Sony A55
 Pentax K-70Sony SLT-A55
General Information
Company Pentax Sony
Model Pentax K-70 Sony SLT-A55
Category Entry-Level DSLR Entry-Level DSLR
Launched 2016-06-08 2010-08-24
Body design Compact SLR Compact SLR
Sensor Information
Processor Chip PRIME MII Bionz
Sensor type CMOS CMOS
Sensor size APS-C APS-C
Sensor dimensions 23.5 x 15.6mm 23.5 x 15.6mm
Sensor area 366.6mm² 366.6mm²
Sensor resolution 24 megapixels 16 megapixels
Anti aliasing filter
Aspect ratio 3:2 3:2 and 16:9
Highest Possible resolution 6000 x 4000 4912 x 3264
Maximum native ISO 102400 12800
Maximum enhanced ISO - 25600
Minimum native ISO 100 100
RAW pictures
Autofocusing
Manual focus
AF touch
AF continuous
Single AF
Tracking AF
Selective AF
Center weighted AF
Multi area AF
AF live view
Face detection AF
Contract detection AF
Phase detection AF
Number of focus points 11 15
Cross focus points 9 3
Lens
Lens mount Pentax KAF2 Sony/Minolta Alpha
Total lenses 151 143
Crop factor 1.5 1.5
Screen
Screen type Fully Articulated Fully Articulated
Screen size 3 inch 3 inch
Screen resolution 921k dot 921k dot
Selfie friendly
Liveview
Touch capability
Viewfinder Information
Viewfinder type Optical (pentaprism) Electronic
Viewfinder resolution - 1,150k dot
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.63x 0.73x
Features
Minimum shutter speed 30 seconds 30 seconds
Fastest shutter speed 1/6000 seconds 1/4000 seconds
Continuous shutter speed 6.0 frames/s 10.0 frames/s
Shutter priority
Aperture priority
Manual exposure
Exposure compensation Yes Yes
Set WB
Image stabilization
Integrated flash
Flash range 12.00 m (at ISO 100) 10.00 m (@ ISO 100)
Flash settings Auto, auto w/redeye reduction, flash on, flash + redeye reduction, slow sync, trailing curtain sync, manual Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless
Hot shoe
AEB
WB bracketing
Fastest flash sync - 1/160 seconds
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p) 1920 x 1080 (60, 29.97 fps), 1440 x 1080 (30fps), 640 x 424 (29.97 fps)
Maximum video resolution 1920x1080 1920x1080
Video data format MPEG-4, H.264 MPEG-4, AVCHD, H.264
Mic jack
Headphone jack
Connectivity
Wireless Built-In Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS Optional BuiltIn
Physical
Environment seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 688 grams (1.52 lbs) 500 grams (1.10 lbs)
Dimensions 126 x 93 x 74mm (5.0" x 3.7" x 2.9") 124 x 92 x 85mm (4.9" x 3.6" x 3.3")
DXO scores
DXO Overall score not tested 73
DXO Color Depth score not tested 23.0
DXO Dynamic range score not tested 12.4
DXO Low light score not tested 816
Other
Battery life 410 photographs 380 photographs
Style of battery Battery Pack Battery Pack
Battery model - NP-FW50
Self timer Yes (2 or 12 secs, continuous) Yes (2 or 10 sec)
Time lapse shooting
Type of storage SD/SDHC/SDXC (UHS-I compatible) SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo
Storage slots One One
Pricing at release $649 $800