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Pentax K-70 vs Sony A57

Portability
62
Imaging
67
Features
81
Overall
72
Pentax K-70 front
 
Sony SLT-A57 front
Portability
64
Imaging
57
Features
85
Overall
68

Pentax K-70 vs Sony A57 Key Specs

Pentax K-70
(Full Review)
  • 24MP - APS-C Sensor
  • 3" Fully Articulated Display
  • ISO 100 - 102400
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/6000s Maximum Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 688g - 126 x 93 x 74mm
  • Introduced June 2016
  • Replacement is Pentax KF
Sony A57
(Full Review)
  • 16MP - APS-C Sensor
  • 3" Fully Articulated Screen
  • ISO 100 - 16000 (Push to 25600)
  • Sensor based Image Stabilization
  • 1920 x 1080 video
  • Sony/Minolta Alpha Mount
  • 618g - 132 x 98 x 81mm
  • Launched September 2012
  • Replaced the Sony A55
  • New Model is Sony A58
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Pentax K-70 vs Sony A57 Overview

The following is a in-depth overview of the Pentax K-70 vs Sony A57, both Entry-Level DSLR cameras by rivals Pentax and Sony. There is a large difference among the sensor resolutions of the K-70 (24MP) and A57 (16MP) but they possess the same exact sensor size (APS-C).

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The K-70 was announced 3 years after the A57 which is a fairly serious difference as far as camera tech is concerned. Both of the cameras offer the identical body type (Compact SLR).

Before getting in to a full comparison, below is a concise overview of how the K-70 grades vs the A57 for portability, imaging, features and an overall mark.

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Reasons to pick Pentax K-70 over the Sony A57

 K-70 A57 
LaunchedJune 2016September 2012Newer by 46 months

Reasons to pick Sony A57 over the Pentax K-70

 A57 K-70 

Common features in the Pentax K-70 and Sony A57

 K-70 A57 
Manually focus Very accurate focus
Screen typeFully ArticulatedFully ArticulatedFully Articulated screen
Screen sizing3"3"Equivalent screen size
Screen resolution921k921kThe same screen resolution
Selfie screen Both are selfie friendly
Touch screen Absent Touch screen

Pentax K-70 vs Sony A57 Physical Comparison

If you're looking to travel with your camera often, you will have to think about its weight and proportions. The Pentax K-70 features external measurements of 126mm x 93mm x 74mm (5.0" x 3.7" x 2.9") having a weight of 688 grams (1.52 lbs) while the Sony A57 has measurements of 132mm x 98mm x 81mm (5.2" x 3.9" x 3.2") and a weight of 618 grams (1.36 lbs).

Contrast the Pentax K-70 vs Sony A57 in our newest Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Always remember, the weight of an ILC will differ depending on the lens you have chosen at that moment. Following is the front view proportions comparison of the K-70 versus the A57.

Pentax K-70 vs Sony A57 size comparison

Factoring in size and weight, the portability grade of the K-70 and A57 is 62 and 64 respectively.

Pentax K-70 vs Sony A57 top view buttons comparison

Pentax K-70 vs Sony A57 Sensor Comparison

In many cases, it can be hard to see the contrast in sensor dimensions only by viewing specifications. The pic underneath might offer you a far better sense of the sensor measurements in the K-70 and A57.

Plainly, both of those cameras offer the same exact sensor sizing albeit not the same MP. You can expect the Pentax K-70 to render extra detail with its extra 8 Megapixels. Higher resolution can also make it easier to crop shots a little more aggressively. The more modern K-70 is going to have a benefit with regard to sensor innovation.

Pentax K-70 vs Sony A57 sensor size comparison

Pentax K-70 vs Sony A57 Screen and ViewFinder

Pentax K-70 vs Sony A57 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-70 Portrait photography info
Sony A57 Portrait photography info
80
focusing manually
megapixel count decent (24 megapixels)
nice sensor size (APS-C)
comes with face detect focusing
supports RAW formats
74
focusing manually
good resolution (16 megapixels)
nice sensor size (APS-C)
provides face detection focusing
exports RAW formats
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Street Comparison

Pentax K-70 Street photography information
Sony A57 Street photography information
71
screen can move to multiple angles
built in image stabilization (Sensor based)
nice sensor size (APS-C)
supports RAW formats
environment proofing
great ISO range (102,400)
heavier than competition in class (688g)
75
screen articulates fully
built in image stabilization (Sensor based)
nice sensor size (APS-C)
exports RAW formats
Photography Glossary

Sports Comparison

Pentax K-70 Sports photography features
Sony A57 Sports photography features
72
maximum shutter speed is high (1/6,000 seconds)
built in image stabilization (Sensor based)
megapixel count decent (24MP)
nice sensor size (APS-C)
comes with tracking focus
environment proofing
has phase detect AF
max fps low (6.0 frames/s)
not so great battery pack (410 CIPA)
78
built in image stabilization (Sensor based)
good resolution (16MP)
nice sensor size (APS-C)
provides tracking autofocus
has phase detect AF
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Travel Comparison

Pentax K-70 Travel photography info
Sony A57 Travel photography info
64
environment proofing
megapixel count decent (24 megapixels)
flash built-in
screen is selfie friendly
not so great battery pack (410 per charge)
heavier than competition in class (688 grams)
67
good resolution (16MP)
built-in flash
selfie friendly screen
no Timelapse function
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Landscape Comparison

Pentax K-70 Landscape photography advice
Sony A57 Landscape photography advice
78
focusing manually
swap lenses (Pentax KAF2 mount)
decent sized screen (3 inch)
built in image stabilization (Sensor based)
megapixel count decent (24MP)
nice sensor size (APS-C)
no anti aliasing filter
great ISO range (102,400)
supports RAW formats
environment proofing
not so great battery pack (410 per charge)
72
focusing manually
interchangeable lenses (Sony/Minolta Alpha mount)
good sized screen (3 inches)
built in image stabilization (Sensor based)
good resolution (16MP)
nice sensor size (APS-C)
exports RAW formats
no Timelapse function
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Vlogging Comparison

Pentax K-70 Vlogging information
Sony A57 Vlogging information
71
screen is selfie friendly
built in image stabilization (Sensor based)
comes with face detect focusing
good video quality (1920 x 1080 pxls)
has mic support
heavier than competition in class (688g)
77
selfie friendly screen
built in image stabilization (Sensor based)
provides face detection focusing
high quality video (1920 x 1080 pixels)
has external microphone support
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Pentax K-70 vs Sony A57 Specifications

Detailed spec comparison table for Pentax K-70 and Sony A57
 Pentax K-70Sony SLT-A57
General Information
Make Pentax Sony
Model type Pentax K-70 Sony SLT-A57
Class Entry-Level DSLR Entry-Level DSLR
Introduced 2016-06-08 2012-09-13
Physical type Compact SLR Compact SLR
Sensor Information
Chip PRIME MII -
Sensor type CMOS CMOS
Sensor size APS-C APS-C
Sensor measurements 23.5 x 15.6mm 23.5 x 15.6mm
Sensor area 366.6mm² 366.6mm²
Sensor resolution 24MP 16MP
Anti alias filter
Aspect ratio 3:2 3:2 and 16:9
Full resolution 6000 x 4000 4912 x 3264
Max native ISO 102400 16000
Max boosted ISO - 25600
Lowest native ISO 100 100
RAW images
Autofocusing
Manual focusing
Autofocus touch
Continuous autofocus
Single autofocus
Autofocus tracking
Selective autofocus
Autofocus center weighted
Autofocus multi area
Autofocus live view
Face detect autofocus
Contract detect autofocus
Phase detect autofocus
Total focus points 11 15
Cross type focus points 9 3
Lens
Lens support Pentax KAF2 Sony/Minolta Alpha
Amount of lenses 151 143
Focal length multiplier 1.5 1.5
Screen
Type of display Fully Articulated Fully Articulated
Display size 3 inch 3 inch
Resolution of display 921k dots 921k dots
Selfie friendly
Liveview
Touch screen
Display tech - Xtra Fine TFT drive with TruBlack technology
Viewfinder Information
Viewfinder Optical (pentaprism) Electronic
Viewfinder resolution - 1,440k dots
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.63x 0.7x
Features
Lowest shutter speed 30 secs 30 secs
Highest shutter speed 1/6000 secs 1/4000 secs
Continuous shooting rate 6.0 frames/s 12.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Change white balance
Image stabilization
Built-in flash
Flash distance 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
AE bracketing
White balance bracketing
Highest flash synchronize - 1/160 secs
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported video resolutions 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p) 1920 x 1080 (60p, 24p), 1440 x 1080 (30p), 640 x 480 (30 fps)
Max video resolution 1920x1080 1920x1080
Video file format MPEG-4, H.264 MPEG-4, AVCHD, H.264
Microphone support
Headphone support
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 None
Physical
Environmental sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 688 grams (1.52 lb) 618 grams (1.36 lb)
Dimensions 126 x 93 x 74mm (5.0" x 3.7" x 2.9") 132 x 98 x 81mm (5.2" x 3.9" x 3.2")
DXO scores
DXO All around rating not tested 75
DXO Color Depth rating not tested 23.4
DXO Dynamic range rating not tested 13.0
DXO Low light rating not tested 785
Other
Battery life 410 photos 550 photos
Battery style Battery Pack Battery Pack
Battery ID - NP-FM500H
Self timer Yes (2 or 12 secs, continuous) Yes (2 or 10 sec)
Time lapse recording
Storage type SD/SDHC/SDXC (UHS-I compatible) SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo
Card slots 1 1
Retail cost $649 $1,000