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Pentax K-5 IIs vs Sony A7R III

Portability
60
Imaging
57
Features
83
Overall
67
Pentax K-5 IIs front
 
Sony Alpha A7R III front
Portability
63
Imaging
77
Features
93
Overall
83

Pentax K-5 IIs vs Sony A7R III Key Specs

Pentax K-5 IIs
(Full Review)
  • 16MP - APS-C Sensor
  • 3" Fixed Display
  • ISO 100 - 12800 (Boost to 51200)
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 760g - 131 x 97 x 73mm
  • Introduced June 2013
  • Replaced the Pentax K-5
Sony A7R III
(Full Review)
  • 42MP - Full frame Sensor
  • 3" Tilting Screen
  • ISO 100 - 32000 (Push to 102400)
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 657g - 127 x 96 x 74mm
  • Released October 2017
  • Old Model is Sony A7R II
  • Later Model is Sony A7R IV
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Pentax K-5 IIs vs Sony A7R III Overview

Its time to take a more detailed look at the Pentax K-5 IIs and Sony A7R III, one is a Advanced DSLR and the latter is a Pro Mirrorless by manufacturers Pentax and Sony. There exists a significant gap between the resolutions of the K-5 IIs (16MP) and A7R III (42MP) and the K-5 IIs (APS-C) and A7R III (Full frame) provide different sensor sizing.

Photography Glossary

The K-5 IIs was released 5 years earlier than the A7R III which is quite a sizable gap as far as technology is concerned. Both the cameras feature different body design with the Pentax K-5 IIs being a Mid-size SLR camera and the Sony A7R III being a SLR-style mirrorless camera.

Before delving into a complete comparison, here is a short highlight of how the K-5 IIs scores vs the A7R III in the way of portability, imaging, features and an overall score.

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Reasons to pick Pentax K-5 IIs over the Sony A7R III

 K-5 IIs A7R III 

Reasons to pick Sony A7R III over the Pentax K-5 IIs

 A7R III K-5 IIs 
ReleasedOctober 2017June 2013More modern by 53 months
Screen typeTiltingFixed Tilting screen
Screen resolution1440k921kSharper screen (+519k dot)
Touch screen Quickly navigate

Common features in the Pentax K-5 IIs and Sony A7R III

 K-5 IIs A7R III 
Manual focus More exact focusing
Screen size3"3"Same screen measurement
Selfie screen Lacking selfie screen

Pentax K-5 IIs vs Sony A7R III Physical Comparison

In case you're intending to carry around your camera frequently, you will have to think about its weight and dimensions. The Pentax K-5 IIs has got outer measurements of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") along with a weight of 760 grams (1.68 lbs) whilst the Sony A7R III has dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 657 grams (1.45 lbs).

Check out the Pentax K-5 IIs and Sony A7R III in the new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an Interchangeable Lens Camera will vary depending on the lens you have chosen at that moment. Below is a front view physical size comparison of the K-5 IIs against the A7R III.

Pentax K-5 IIs vs Sony A7R III size comparison

Factoring in dimensions and weight, the portability grade of the K-5 IIs and A7R III is 60 and 63 respectively.

Pentax K-5 IIs vs Sony A7R III top view buttons comparison

Pentax K-5 IIs vs Sony A7R III Sensor Comparison

Normally, it is tough to visualize the contrast between sensor sizes only by reading through technical specs. The image below should provide you a far better sense of the sensor sizing in the K-5 IIs and A7R III.

As you have seen, the two cameras feature different megapixel count and different sensor sizes. The K-5 IIs because of its tinier sensor is going to make achieving bokeh trickier and the Sony A7R III will give you extra detail as a result of its extra 26MP. Higher resolution will also help you crop pictures way more aggressively. The more aged K-5 IIs is going to be disadvantaged in sensor technology.

Pentax K-5 IIs vs Sony A7R III sensor size comparison

Pentax K-5 IIs vs Sony A7R III Screen and ViewFinder

Pentax K-5 IIs vs Sony A7R III Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with Pentax K-5 IIs
Portrait photography with Sony A7R III
74
you can focus manually
decent megapixels (16 megapixels)
decent sensor size (APS-C)
features face detect focus
delivers RAW formats
86
focusing manually
megapixel count fantastic (42 megapixels)
great sensor size (Full frame)
includes face detection focusing
delivers RAW formats
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Street Comparison

Pentax K-5 IIs as a Street photography camera
Sony A7R III as a Street photography camera
66
has image stabilization (Sensor based)
decent sensor size (APS-C)
delivers RAW formats
weather proof
fixed screen
79
screen tilts up and down
built in image stabilization (Sensor based 5-axis)
great sensor size (Full frame)
delivers RAW formats
has touch to focus
weather sealing
good ISO range (32,000)
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Sports Comparison

Pentax K-5 IIs Sports photography details
Sony A7R III Sports photography details
78
high shutter speed (1/8,000s)
has image stabilization (Sensor based)
decent megapixels (16 megapixels)
decent sensor size (APS-C)
features tracking focus
weather proof
supports phase detect auto focus
88
high shutter speed (1/8,000s)
built in image stabilization (Sensor based 5-axis)
megapixel count fantastic (42MP)
great sensor size (Full frame)
includes tracking autofocus
weather sealing
better than average battery life (650 CIPA)
has phase detect AF
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Travel Comparison

Pentax K-5 IIs Travel photography advice
Sony A7R III Travel photography advice
65
weather proof
decent megapixels (16 megapixels)
built-in flash
screen is not selfie friendly
73
better than average battery life (650 shots)
weather sealing
supports bluetooth
has touch to focus
megapixel count fantastic (42MP)
does not contain selfie friendly display
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Landscape Comparison

Pentax K-5 IIs Landscape photography highlights
Sony A7R III Landscape photography highlights
78
you can focus manually
swap lenses (Pentax KAF2 mount)
screen is a decent size (3 inch)
has image stabilization (Sensor based)
decent megapixels (16MP)
decent sensor size (APS-C)
no anti-alias filter
delivers RAW formats
weather proof
87
focusing manually
switch lenses (Sony E mount)
pretty good screen size (3 inches)
built in image stabilization (Sensor based 5-axis)
megapixel count fantastic (42MP)
great sensor size (Full frame)
does not have low pass filter
good ISO range (32,000)
delivers RAW formats
weather sealing
better than average battery life (650 per charge)
has dual storage slots
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Vlogging Comparison

Pentax K-5 IIs Vlogging details
Sony A7R III Vlogging details
33
has image stabilization (Sensor based)
features face detect focus
video res high (1920 x 1080 pixels)
comes with mic jack
screen is not selfie friendly
36
touchscreen enabled
built in image stabilization (Sensor based 5-axis)
includes face detection focusing
video resolution high (3840 x 2160 resolution)
has external microphone jack
does not contain selfie friendly display
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Pentax K-5 IIs vs Sony A7R III Specifications

Detailed spec comparison table for Pentax K-5 IIs and Sony A7R III
 Pentax K-5 IIsSony Alpha A7R III
General Information
Manufacturer Pentax Sony
Model type Pentax K-5 IIs Sony Alpha A7R III
Type Advanced DSLR Pro Mirrorless
Introduced 2013-06-04 2017-10-25
Body design Mid-size SLR SLR-style mirrorless
Sensor Information
Powered by Prime II Bionz X
Sensor type CMOS BSI-CMOS
Sensor size APS-C Full frame
Sensor measurements 23.7 x 15.7mm 35.9 x 24mm
Sensor surface area 372.1mm² 861.6mm²
Sensor resolution 16 megapixels 42 megapixels
Anti alias filter
Aspect ratio 3:2 3:2 and 16:9
Peak resolution 4928 x 3264 7952 x 5304
Highest native ISO 12800 32000
Highest enhanced ISO 51200 102400
Min native ISO 100 100
RAW format
Min enhanced ISO 80 50
Autofocusing
Focus manually
Touch focus
Continuous autofocus
Single autofocus
Tracking autofocus
Autofocus selectice
Center weighted autofocus
Autofocus multi area
Live view autofocus
Face detect autofocus
Contract detect autofocus
Phase detect autofocus
Total focus points 11 425
Cross type focus points 9 -
Lens
Lens mount type Pentax KAF2 Sony E
Number of lenses 151 121
Crop factor 1.5 1
Screen
Range of display Fixed Type Tilting
Display sizing 3 inch 3 inch
Display resolution 921k dot 1,440k dot
Selfie friendly
Liveview
Touch friendly
Display tech TFT LCD monitor -
Viewfinder Information
Viewfinder Optical (pentaprism) Electronic
Viewfinder resolution - 3,686k dot
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.61x 0.78x
Features
Minimum shutter speed 30s 30s
Fastest shutter speed 1/8000s 1/8000s
Continuous shutter speed 7.0 frames/s 10.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Custom white balance
Image stabilization
Built-in flash
Flash distance 13.00 m (at ISO 100) no built-in flash
Flash settings Auto, On, Off, Red-eye, Slow sync, High speed, Rear curtain and Wireless Off, Auto, Fill-flash, Slow Sync, Rear Sync, Red-eye reduction, Wireless, Hi-speed sync
External flash
AEB
WB bracketing
Fastest flash sync 1/180s -
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions 1920 x 1080 (25 fps), 1280 x 720 (25, 30 fps), 640 x 480 (25, 30 fps) 3840 x 2160 (30p, 25p, 24p), 1920 x 1080 (60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p)
Highest video resolution 1920x1080 3840x2160
Video data format Motion JPEG MPEG-4, AVCHD, XAVC S
Microphone input
Headphone input
Connectivity
Wireless None Built-In
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 3.1 Gen 1(5 GBit/sec)
GPS Optional None
Physical
Environment seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 760 gr (1.68 pounds) 657 gr (1.45 pounds)
Physical dimensions 131 x 97 x 73mm (5.2" x 3.8" x 2.9") 127 x 96 x 74mm (5.0" x 3.8" x 2.9")
DXO scores
DXO Overall rating 82 100
DXO Color Depth rating 23.9 26.0
DXO Dynamic range rating 14.1 14.7
DXO Low light rating 1208 3523
Other
Battery life 980 pictures 650 pictures
Type of battery Battery Pack Battery Pack
Battery ID D-LI90 NP-FZ100
Self timer Yes ( 2 or 12 seconds) Yes (2 or 10 sec; continuous (3 or 5 exposures))
Time lapse recording
Type of storage SD/SDHC/SDXC Two SD/SDHC/SDXC slots (UHS-II support on one)
Storage slots One 2
Pricing at release $749 $2,800