Pentax K-5 IIs vs Sony A7R III
60 Imaging
57 Features
83 Overall
67


63 Imaging
77 Features
93 Overall
83
Pentax K-5 IIs vs Sony A7R III Key Specs
(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
(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

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.

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.

Pentax K-5 IIs vs Sony A7R III Gallery
Following is a preview of the gallery images for Pentax K-5 IIs and Sony Alpha A7R III. The complete galleries are viewable at Pentax K-5 IIs Gallery and Sony A7R III Gallery.
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 | |||
---|---|---|---|---|
Released | October 2017 | ![]() | June 2013 | More modern by 53 months |
Screen type | Tilting | ![]() | Fixed | Tilting screen |
Screen resolution | 1440k | ![]() | 921k | Sharper 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 size | 3" | ![]() | 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.
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.

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 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 Screen and ViewFinder


Photography Type Scores
Portrait Comparison

Street Comparison

Sports Comparison

Travel Comparison

Landscape Comparison

Vlogging Comparison

Pentax K-5 IIs vs Sony A7R III Specifications
Pentax K-5 IIs | Sony 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 |