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Pentax K-01 vs Sony A57

Portability
76
Imaging
56
Features
68
Overall
60
Pentax K-01 front
 
Sony SLT-A57 front
Portability
64
Imaging
57
Features
85
Overall
68

Pentax K-01 vs Sony A57 Key Specs

Pentax K-01
(Full Review)
  • 16MP - APS-C Sensor
  • 3" Fixed Screen
  • ISO 100 - 12800 (Expand to 25600)
  • Sensor based Image Stabilization
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 561g - 122 x 79 x 58mm
  • Announced May 2012
Sony A57
(Full Review)
  • 16MP - APS-C Sensor
  • 3" Fully Articulated Screen
  • ISO 100 - 16000 (Raise to 25600)
  • Sensor based Image Stabilization
  • 1920 x 1080 video
  • Sony/Minolta Alpha Mount
  • 618g - 132 x 98 x 81mm
  • Launched September 2012
  • Succeeded the Sony A55
  • Updated by Sony A58
Photography Glossary

Pentax K-01 vs Sony A57 Overview

Its time to look a bit more closely at the Pentax K-01 vs Sony A57, former is a Entry-Level Mirrorless while the latter is a Entry-Level DSLR by competitors Pentax and Sony. The sensor resolution of the K-01 (16MP) and the A57 (16MP) is pretty well matched and both cameras boast the identical sensor size (APS-C).

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The K-01 was manufactured 3 months before the A57 which means that they are of a similar age. Both the cameras feature different body design with the Pentax K-01 being a SLR-style mirrorless camera and the Sony A57 being a Compact SLR camera.

Before delving straight to a step-by-step comparison, here is a quick introduction of how the K-01 matches up versus the A57 with respect to portability, imaging, features and an overall mark.

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Reasons to pick Pentax K-01 over the Sony A57

 K-01 A57 

Reasons to pick Sony A57 over the Pentax K-01

 A57 K-01 
Screen typeFully ArticulatedFixed Fully Articulating screen
Selfie screen Take selfies

Common features in the Pentax K-01 and Sony A57

 K-01 A57 
LaunchedMay 2012September 2012Similar age
Manually focus More precise focusing
Screen size3"3"Same screen size
Screen resolution921k921kIdentical screen resolution
Touch friendly screen Lack of Touch friendly screen

Pentax K-01 vs Sony A57 Physical Comparison

For anybody who is going to travel with your camera, you are going to need to factor in its weight and volume. The Pentax K-01 provides outer dimensions of 122mm x 79mm x 58mm (4.8" x 3.1" x 2.3") having a weight of 561 grams (1.24 lbs) whilst the Sony A57 has sizing of 132mm x 98mm x 81mm (5.2" x 3.9" x 3.2") having a weight of 618 grams (1.36 lbs).

Analyze the Pentax K-01 vs Sony A57 in our newest Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Do not forget, the weight of an ILC will vary based on the lens you select at that time. Underneath is a front view scale comparison of the K-01 against the A57.

Pentax K-01 vs Sony A57 size comparison

Considering size and weight, the portability rating of the K-01 and A57 is 76 and 64 respectively.

Pentax K-01 vs Sony A57 top view buttons comparison

Pentax K-01 vs Sony A57 Sensor Comparison

Usually, it is difficult to imagine the gap between sensor dimensions just by checking a spec sheet. The picture underneath will offer you a much better sense of the sensor sizes in the K-01 and A57.

Clearly, the 2 cameras come with the identical sensor size and the same exact resolution therefore you can expect similar quality of photos however you would want to factor the launch date of the products into consideration.

Pentax K-01 vs Sony A57 sensor size comparison

Pentax K-01 vs Sony A57 Screen and ViewFinder

Pentax K-01 vs Sony A57 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-01 Portrait photography info
Sony A57 Portrait photography info
73
manual focus
megapixel count good (16 megapixels)
decent sensor size (APS-C)
comes with face detection autofocus
exports RAW formats
74
has manual focus
decent sensor resolution (16MP)
sensor size is good (APS-C)
comes with face detect focus
exports RAW formats
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Street Comparison

Pentax K-01 Street photography information
Sony A57 Street photography information
66
image stabilization (Sensor based)
decent sensor size (APS-C)
exports RAW formats
no articulating screen
heavier than average (561 grams)
75
screen articulates
image stabilization (Sensor based)
sensor size is good (APS-C)
exports RAW formats
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Sports Comparison

Sports photography with Pentax K-01
Sports photography with Sony A57
61
image stabilization (Sensor based)
megapixel count good (16 megapixels)
decent sensor size (APS-C)
better than average battery power (540 shots)
max fps low (6.0 fps)
doesn't have phase detect autofocus
78
image stabilization (Sensor based)
decent sensor resolution (16 megapixels)
sensor size is good (APS-C)
comes with tracking focus
comes with phase detect auto focus
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Travel Comparison

Pentax K-01 Travel photography info
Sony A57 Travel photography info
65
better than average battery power (540 shots)
megapixel count good (16 megapixels)
has built in flash
heavier than average (561 grams)
doesn't offer selfie friendly display
67
decent sensor resolution (16MP)
has built in flash
selfie friendly display
missing Time Lapse mode
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Landscape Comparison

Pentax K-01 Landscape photography features
Sony A57 Landscape photography features
80
manual focus
switch lenses (Pentax KAF2 mount)
nice screen size (3")
image stabilization (Sensor based)
megapixel count good (16MP)
decent sensor size (APS-C)
exports RAW formats
better than average battery power (540 shots)
72
has manual focus
change lenses (Sony/Minolta Alpha mount)
pretty good screen size (3 inches)
image stabilization (Sensor based)
decent sensor resolution (16MP)
sensor size is good (APS-C)
exports RAW formats
missing Time Lapse mode
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Vlogging Comparison

Vlogging with Pentax K-01
Vlogging with Sony A57
34
image stabilization (Sensor based)
comes with face detection autofocus
video resolution high (1920 x 1080 pxls)
does have external mic socket
doesn't offer selfie friendly display
heavier than average (561 grams)
77
selfie friendly display
image stabilization (Sensor based)
comes with face detect focus
great video quality (1920 x 1080 resolution)
does have mic support
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Pentax K-01 vs Sony A57 Specifications

Detailed spec comparison table for Pentax K-01 and Sony A57
 Pentax K-01Sony SLT-A57
General Information
Manufacturer Pentax Sony
Model type Pentax K-01 Sony SLT-A57
Type Entry-Level Mirrorless Entry-Level DSLR
Announced 2012-05-30 2012-09-13
Physical type SLR-style mirrorless Compact SLR
Sensor Information
Sensor type CMOS CMOS
Sensor size APS-C APS-C
Sensor dimensions 23.7 x 15.7mm 23.5 x 15.6mm
Sensor area 372.1mm² 366.6mm²
Sensor resolution 16 megapixels 16 megapixels
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2 and 16:9
Full resolution 4928 x 3264 4912 x 3264
Max native ISO 12800 16000
Max boosted ISO 25600 25600
Lowest native ISO 100 100
RAW photos
Autofocusing
Manual focusing
AF touch
AF continuous
Single AF
Tracking AF
Selective AF
AF center weighted
Multi area AF
AF live view
Face detection AF
Contract detection AF
Phase detection AF
Total focus points 81 15
Cross type focus points - 3
Lens
Lens support Pentax KAF2 Sony/Minolta Alpha
Available lenses 151 143
Crop factor 1.5 1.5
Screen
Type of screen Fixed Type Fully Articulated
Screen size 3" 3"
Screen resolution 921k dots 921k dots
Selfie friendly
Liveview
Touch functionality
Screen technology TFT LCD monitor Xtra Fine TFT drive with TruBlack technology
Viewfinder Information
Viewfinder type None Electronic
Viewfinder resolution - 1,440k dots
Viewfinder coverage - 100 percent
Viewfinder magnification - 0.7x
Features
Lowest shutter speed 30s 30s
Highest shutter speed 1/4000s 1/4000s
Continuous shooting rate 6.0fps 12.0fps
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change WB
Image stabilization
Integrated flash
Flash distance 12.00 m (at ISO 100) 10.00 m (@ ISO 100)
Flash settings Auto, On, Off, Red-eye, Slow-speed Sync, Trailing Curtain Sync Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless
Hot shoe
Auto exposure bracketing
WB bracketing
Highest flash synchronize 1/180s 1/160s
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Supported video resolutions 1920 x 1080 (30, 25, 24 fps),1280 x 720 (60, 50, 30, 25, 24 fps), 640 x 480 (30, 25, 24 fps) 1920 x 1080 (60p, 24p), 1440 x 1080 (30p), 640 x 480 (30 fps)
Max video resolution 1920x1080 1920x1080
Video data format MPEG-4, H.264 MPEG-4, AVCHD, H.264
Mic support
Headphone support
Connectivity
Wireless None Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 561g (1.24 lb) 618g (1.36 lb)
Physical dimensions 122 x 79 x 58mm (4.8" x 3.1" x 2.3") 132 x 98 x 81mm (5.2" x 3.9" x 3.2")
DXO scores
DXO All around rating 79 75
DXO Color Depth rating 23.7 23.4
DXO Dynamic range rating 12.9 13.0
DXO Low light rating 1135 785
Other
Battery life 540 shots 550 shots
Style of battery Battery Pack Battery Pack
Battery ID D-LI90 NP-FM500H
Self timer Yes (2 or 12 sec) Yes (2 or 10 sec)
Time lapse recording
Storage type SD/SDHC/SDXC SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo
Card slots 1 1
Launch price $899 $1,000