Pentax K20D vs Sony A850
59 Imaging
53 Features
52 Overall
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54 Imaging
68 Features
60 Overall
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Pentax K20D vs Sony A850 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
- Introduced June 2008
- Superseded the Pentax K10D
(Full Review)
- 25MP - Full frame Sensor
- 3" Fixed Display
- ISO 200 - 3200 (Push to 6400)
- Sensor based Image Stabilization
- 1/8000s Max Shutter
- No Video
- Sony/Minolta Alpha Mount
- 895g - 156 x 117 x 82mm
- Launched April 2010
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Lets look more closely at the Pentax K20D versus Sony A850, both Advanced DSLR digital cameras by competitors Pentax and Sony. There exists a significant gap between the sensor resolutions of the K20D (15MP) and A850 (25MP) and the K20D (APS-C) and A850 (Full frame) boast totally different sensor measurements.
Photography GlossaryThe K20D was launched 21 months before the A850 making them a generation away from one another. Both of these cameras feature the same body design (Mid-size SLR).
Before delving into a step-by-step comparison, here is a short overview of how the K20D matches up against the A850 with regards to portability, imaging, features and an overall score.
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Below is a sample of the gallery pictures for Pentax K20D and Sony Alpha DSLR-A850. The complete galleries are viewable at Pentax K20D Gallery and Sony A850 Gallery.
Reasons to pick Pentax K20D over the Sony A850
| K20D | A850 |
|---|
Reasons to pick Sony A850 over the Pentax K20D
| A850 | K20D | |||
|---|---|---|---|---|
| Launched | April 2010 |  | June 2008 | More modern by 21 months |
| Display size | 3" |  | 2.7" | Larger display (+0.3") |
| Display resolution | 922k |  | 230k | Sharper display (+692k dot) |
Common features in the Pentax K20D and Sony A850
| K20D | A850 | |||
|---|---|---|---|---|
| Manual focus |  | More precise focusing | ||
| Display type | Fixed |  | Fixed | Fixed display |
| Selfie screen |  | Neither offers selfie screen | ||
| Touch display |  | Neither offers Touch display |
Pentax K20D vs Sony A850 Physical Comparison
If you're planning to carry around your camera frequently, you will need to take into account its weight and size. The Pentax K20D offers outer measurements of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") having a weight of 800 grams (1.76 lbs) whilst the Sony A850 has specifications of 156mm x 117mm x 82mm (6.1" x 4.6" x 3.2") along with a weight of 895 grams (1.97 lbs).
See the Pentax K20D versus Sony A850 in the all new Camera with Lens Size Comparison Tool.
Remember, the weight of an Interchangeable Lens Camera will vary depending on the lens you are employing during that time. Following is a front view size comparison of the K20D compared to the A850.
Factoring in dimensions and weight, the portability score of the K20D and A850 is 59 and 54 respectively.
Pentax K20D vs Sony A850 Sensor Comparison
Typically, its hard to envision the difference between sensor sizes purely by reading through specifications. The picture here should offer you a much better sense of the sensor measurements in the K20D and A850.
Plainly, the two cameras come with different megapixel count and different sensor sizes. The K20D featuring a tinier sensor will make shooting shallow DOF trickier and the Sony A850 will give more detail utilizing its extra 10 Megapixels. Greater resolution will also enable you to crop photos a good deal more aggressively. The more aged K20D is going to be behind in sensor tech.
Pentax K20D vs Sony A850 Screen and ViewFinder
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Pentax K20D vs Sony A850 Specifications
| Pentax K20D | Sony Alpha DSLR-A850 | |
|---|---|---|
| General Information | ||
| Brand Name | Pentax | Sony |
| Model type | Pentax K20D | Sony Alpha DSLR-A850 |
| Type | Advanced DSLR | Advanced DSLR |
| Introduced | 2008-06-25 | 2010-04-15 |
| Physical type | Mid-size SLR | Mid-size SLR |
| Sensor Information | ||
| Processor Chip | - | Bionz |
| Sensor type | CMOS | CMOS |
| Sensor size | APS-C | Full frame |
| Sensor measurements | 23.4 x 15.6mm | 35.9 x 24mm |
| Sensor area | 365.0mm² | 861.6mm² |
| Sensor resolution | 15 megapixels | 25 megapixels |
| Anti alias filter | ||
| Aspect ratio | 3:2 | 3:2 and 16:9 |
| Maximum resolution | 4672 x 3104 | 6048 x 4032 |
| Maximum native ISO | 3200 | 3200 |
| Maximum boosted ISO | 6400 | 6400 |
| Lowest native ISO | 100 | 200 |
| RAW pictures | ||
| Autofocusing | ||
| Focus manually | ||
| Touch to focus | ||
| Continuous AF | ||
| Single AF | ||
| AF tracking | ||
| Selective AF | ||
| Center weighted AF | ||
| AF multi area | ||
| AF live view | ||
| Face detect AF | ||
| Contract detect AF | ||
| Phase detect AF | ||
| Total focus points | 11 | 9 |
| Lens | ||
| Lens support | Pentax KAF2 | Sony/Minolta Alpha |
| Total lenses | 151 | 143 |
| Focal length multiplier | 1.5 | 1 |
| Screen | ||
| Display type | Fixed Type | Fixed Type |
| Display sizing | 2.7 inches | 3 inches |
| Display resolution | 230 thousand dots | 922 thousand dots |
| Selfie friendly | ||
| Liveview | ||
| Touch function | ||
| Display tech | - | TFT Xtra Fine color LCD |
| Viewfinder Information | ||
| Viewfinder type | Optical (pentaprism) | Optical (pentaprism) |
| Viewfinder coverage | 95% | 98% |
| Viewfinder magnification | 0.64x | 0.74x |
| Features | ||
| Lowest shutter speed | 30s | 30s |
| Highest shutter speed | 1/4000s | 1/8000s |
| Continuous shooting rate | 3.0fps | 3.0fps |
| Shutter priority | ||
| Aperture priority | ||
| Manually set exposure | ||
| Exposure compensation | Yes | Yes |
| Change WB | ||
| Image stabilization | ||
| Built-in flash | ||
| Flash distance | 13.00 m (at ISO 100) | no built-in flash |
| Flash modes | Auto, Red-Eye, Slow, Red-Eye Slow, Rear curtain, wireless | Auto, On, Off, Red-Eye, Slow Sync, Rear Curtain, Fill-in, Wireless |
| External flash | ||
| AEB | ||
| White balance bracketing | ||
| Highest flash synchronize | 1/180s | 1/250s |
| Exposure | ||
| Multisegment exposure | ||
| Average exposure | ||
| Spot exposure | ||
| Partial exposure | ||
| AF area exposure | ||
| Center weighted exposure | ||
| Video features | ||
| Maximum video resolution | None | None |
| Microphone support | ||
| Headphone support | ||
| Connectivity | ||
| Wireless | None | None |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 2.0 (480 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
| GPS | None | None |
| Physical | ||
| Environmental sealing | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 800g (1.76 pounds) | 895g (1.97 pounds) |
| Physical dimensions | 142 x 101 x 70mm (5.6" x 4.0" x 2.8") | 156 x 117 x 82mm (6.1" x 4.6" x 3.2") |
| DXO scores | ||
| DXO All around rating | 65 | 79 |
| DXO Color Depth rating | 22.9 | 23.8 |
| DXO Dynamic range rating | 11.1 | 12.2 |
| DXO Low light rating | 639 | 1415 |
| Other | ||
| Battery life | - | 880 shots |
| Battery style | - | Battery Pack |
| Battery ID | D-LI50 | NP-FM500H |
| Self timer | Yes (2 or 10 sec) | Yes (2 or 10 sec) |
| Time lapse recording | ||
| Type of storage | SD/MMC/SDHC card | Compact Flash (Type I or II), UDMA, Memory Stick Duo / Pro Duo |
| Card slots | Single | Two |
| Retail pricing | $700 | $0 |