Pentax K20D vs Sony RX100 IV
59 Imaging
52 Features
52 Overall
52
89 Imaging
51 Features
79 Overall
62
Pentax K20D vs Sony RX100 IV Key Specs
(Full Review)
- 15MP - APS-C Sensor
- 2.7" Fixed Display
- ISO 100 - 3200 (Increase to 6400)
- Sensor based Image Stabilization
- No Video
- Pentax KAF2 Mount
- 800g - 142 x 101 x 70mm
- Launched June 2008
- Earlier Model is Pentax K10D
(Full Review)
- 20MP - 1" Sensor
- 3" Tilting Screen
- ISO 125 - 12800 (Raise to 25600)
- Optical Image Stabilization
- 3840 x 2160 video
- 24-70mm (F1.8-2.8) lens
- 298g - 102 x 58 x 41mm
- Launched June 2015
- Previous Model is Sony RX100 III
- Renewed by Sony RX100 V
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Lets look more closely at the Pentax K20D versus Sony RX100 IV, former is a Advanced DSLR while the latter is a Large Sensor Compact by competitors Pentax and Sony. There is a considerable difference among the resolutions of the K20D (15MP) and RX100 IV (20MP) and the K20D (APS-C) and RX100 IV (1") boast different sensor sizes.
Snapchat Adds Watermarks to AI-Created ImagesThe K20D was unveiled 8 years earlier than the RX100 IV which is a fairly large difference as far as camera tech is concerned. Each of the cameras have different body design with the Pentax K20D being a Mid-size SLR camera and the Sony RX100 IV being a Large Sensor Compact camera.
Before getting straight to a full comparison, here is a short synopsis of how the K20D grades vs the RX100 IV with regard to portability, imaging, features and an overall mark.
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Following is a preview of the gallery images for Pentax K20D & Sony Cyber-shot DSC-RX100 IV. The full galleries are provided at Pentax K20D Gallery & Sony RX100 IV Gallery.
Reasons to pick Pentax K20D over the Sony RX100 IV
| K20D | RX100 IV |
|---|
Reasons to pick Sony RX100 IV over the Pentax K20D
| RX100 IV | K20D | |||
|---|---|---|---|---|
| Launched | June 2015 | June 2008 | Newer by 84 months | |
| Screen type | Tilting | Fixed | Tilting screen | |
| Screen dimensions | 3" | 2.7" | Bigger screen (+0.3") | |
| Screen resolution | 1229k | 230k | Crisper screen (+999k dot) | |
| Selfie screen | Take selfies |
Common features in the Pentax K20D and Sony RX100 IV
| K20D | RX100 IV | |||
|---|---|---|---|---|
| Manually focus | Dial exact focus | |||
| Touch screen | Absent Touch screen |
Pentax K20D vs Sony RX100 IV Physical Comparison
In case you're going to travel with your camera often, you will want to take into account its weight and measurements. The Pentax K20D comes with physical dimensions of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") accompanied by a weight of 800 grams (1.76 lbs) whilst the Sony RX100 IV has proportions of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") having a weight of 298 grams (0.66 lbs).
Analyze the Pentax K20D versus Sony RX100 IV in our completely new Camera & Lens Size Comparison Tool.
Always remember, the weight of an ILC will change dependant on the lens you have chosen at the time. Underneath is a front view physical size comparison of the K20D against the RX100 IV.

Taking into consideration size and weight, the portability grade of the K20D and RX100 IV is 59 and 89 respectively.
Pentax K20D vs Sony RX100 IV Sensor Comparison
Generally, it's hard to imagine the difference in sensor dimensions merely by looking through specifications. The pic below will help give you a more clear sense of the sensor sizes in the K20D and RX100 IV.
To sum up, each of the cameras provide different megapixels and different sensor dimensions. The K20D with its bigger sensor is going to make achieving shallow DOF simpler and the Sony RX100 IV will render greater detail having an extra 5MP. Higher resolution will also enable you to crop photographs more aggressively. The more aged K20D will be disadvantaged when it comes to sensor technology.
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Pentax K20D vs Sony RX100 IV Specifications
| Pentax K20D | Sony Cyber-shot DSC-RX100 IV | |
|---|---|---|
| General Information | ||
| Brand | Pentax | Sony |
| Model type | Pentax K20D | Sony Cyber-shot DSC-RX100 IV |
| Type | Advanced DSLR | Large Sensor Compact |
| Launched | 2008-06-25 | 2015-06-10 |
| Body design | Mid-size SLR | Large Sensor Compact |
| Sensor Information | ||
| Processor | - | Bionz X |
| Sensor type | CMOS | BSI-CMOS |
| Sensor size | APS-C | 1" |
| Sensor measurements | 23.4 x 15.6mm | 13.2 x 8.8mm |
| Sensor area | 365.0mm² | 116.2mm² |
| Sensor resolution | 15 megapixel | 20 megapixel |
| Anti alias filter | ||
| Aspect ratio | 3:2 | 1:1, 4:3, 3:2 and 16:9 |
| Maximum resolution | 4672 x 3104 | 5472 x 3648 |
| Maximum native ISO | 3200 | 12800 |
| Maximum boosted ISO | 6400 | 25600 |
| Minimum native ISO | 100 | 125 |
| RAW data | ||
| Minimum boosted ISO | - | 80 |
| Autofocusing | ||
| Manual focusing | ||
| AF touch | ||
| AF continuous | ||
| Single AF | ||
| AF tracking | ||
| Selective AF | ||
| AF center weighted | ||
| Multi area AF | ||
| AF live view | ||
| Face detect focusing | ||
| Contract detect focusing | ||
| Phase detect focusing | ||
| Total focus points | 11 | 25 |
| Lens | ||
| Lens mount type | Pentax KAF2 | fixed lens |
| Lens zoom range | - | 24-70mm (2.9x) |
| Maximum aperture | - | f/1.8-2.8 |
| Macro focusing distance | - | 5cm |
| Available lenses | 151 | - |
| Focal length multiplier | 1.5 | 2.7 |
| Screen | ||
| Display type | Fixed Type | Tilting |
| Display diagonal | 2.7 inches | 3 inches |
| Resolution of display | 230k dot | 1,229k dot |
| Selfie friendly | ||
| Liveview | ||
| Touch operation | ||
| Viewfinder Information | ||
| Viewfinder | Optical (pentaprism) | Electronic |
| Viewfinder resolution | - | 2,359k dot |
| Viewfinder coverage | 95 percent | 100 percent |
| Viewfinder magnification | 0.64x | 0.59x |
| Features | ||
| Lowest shutter speed | 30s | 30s |
| Highest shutter speed | 1/4000s | 1/2000s |
| Highest quiet shutter speed | - | 1/32000s |
| Continuous shooting speed | 3.0 frames per sec | 16.0 frames per sec |
| Shutter priority | ||
| Aperture priority | ||
| Expose Manually | ||
| Exposure compensation | Yes | Yes |
| Custom WB | ||
| Image stabilization | ||
| Integrated flash | ||
| Flash distance | 13.00 m (at ISO 100) | - |
| Flash modes | Auto, Red-Eye, Slow, Red-Eye Slow, Rear curtain, wireless | - |
| Hot shoe | ||
| AE bracketing | ||
| WB bracketing | ||
| Highest flash sync | 1/180s | 1/2000s |
| Exposure | ||
| Multisegment metering | ||
| Average metering | ||
| Spot metering | ||
| Partial metering | ||
| AF area metering | ||
| Center weighted metering | ||
| Video features | ||
| Supported video resolutions | - | 3840 x 2160 (30p, 25p, 24p), 1920 x 1080 (60p/60i/24p), 1280 x 720 (60p/30p/24p/120p), 1440 x 1080 (30 fps), 640 x 480 (30 fps) |
| Maximum video resolution | None | 3840x2160 |
| Video format | - | 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 2.0 (480 Mbit/sec) |
| GPS | None | None |
| Physical | ||
| Environmental seal | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 800g (1.76 lbs) | 298g (0.66 lbs) |
| Physical dimensions | 142 x 101 x 70mm (5.6" x 4.0" x 2.8") | 102 x 58 x 41mm (4.0" x 2.3" x 1.6") |
| DXO scores | ||
| DXO All around rating | 65 | 70 |
| DXO Color Depth rating | 22.9 | 22.9 |
| DXO Dynamic range rating | 11.1 | 12.6 |
| DXO Low light rating | 639 | 562 |
| Other | ||
| Battery life | - | 280 shots |
| Battery format | - | Battery Pack |
| Battery ID | D-LI50 | NP-BX1 |
| Self timer | Yes (2 or 10 sec) | Yes |
| Time lapse feature | With downloadable app | |
| Storage media | SD/MMC/SDHC card | SD/ SDHC/SDXC, Memory Stick Pro Duo/ Pro-HG Duo |
| Storage slots | Single | Single |
| Retail price | $700 | $898 |