Pentax K-S1 vs Sony A850
69 Imaging
63 Features
70 Overall
65
54 Imaging
68 Features
60 Overall
64
Pentax K-S1 vs Sony A850 Key Specs
(Full Review)
- 20MP - APS-C Sensor
- 3" Fixed Screen
- ISO 100 - 51200
- Sensor based Image Stabilization
- No Anti-Alias Filter
- 1/6000s Max Shutter
- 1920 x 1080 video
- Pentax KAF2 Mount
- 558g - 121 x 93 x 70mm
- Released August 2014
- Updated by Pentax K-S2
(Full Review)
- 25MP - Full frame Sensor
- 3" Fixed Display
- ISO 200 - 3200 (Raise to 6400)
- Sensor based Image Stabilization
- 1/8000s Max Shutter
- No Video
- Sony/Minolta Alpha Mount
- 895g - 156 x 117 x 82mm
- Released April 2010
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Lets look a little more in depth at the Pentax K-S1 and Sony A850, both Advanced DSLR cameras by brands Pentax and Sony. The resolution of the K-S1 (20MP) and the A850 (25MP) is very close but the K-S1 (APS-C) and A850 (Full frame) feature totally different sensor sizes.
President Biden pushes bill mandating TikTok sale or banThe K-S1 was brought out 4 years after the A850 which is a fairly big gap as far as camera tech is concerned. Each of the cameras offer the identical body type (Mid-size SLR).
Before delving straight into a in depth comparison, below is a quick introduction of how the K-S1 grades against the A850 with respect to portability, imaging, features and an overall score.
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Below is a sample of the gallery pics for Pentax K-S1 and Sony Alpha DSLR-A850. The entire galleries are provided at Pentax K-S1 Gallery and Sony A850 Gallery.
Reasons to pick Pentax K-S1 over the Sony A850
| K-S1 | A850 | |||
|---|---|---|---|---|
| Released | August 2014 |  | April 2010 | More modern by 54 months |
Reasons to pick Sony A850 over the Pentax K-S1
| A850 | K-S1 | |||
|---|---|---|---|---|
| Display resolution | 922k |  | 921k | Sharper display (+1k dot) |
Common features in the Pentax K-S1 and Sony A850
| K-S1 | A850 | |||
|---|---|---|---|---|
| Manually focus |  | More exact focusing | ||
| Display type | Fixed |  | Fixed | Fixed display |
| Display sizing | 3" |  | 3" | Equivalent display dimensions |
| Selfie screen |  | Neither has selfie screen | ||
| Touch display |  | Neither has Touch display |
Pentax K-S1 vs Sony A850 Physical Comparison
If you are intending to carry around your camera regularly, you'll have to factor in its weight and proportions. The Pentax K-S1 has physical dimensions of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") with a weight of 558 grams (1.23 lbs) and the Sony A850 has measurements of 156mm x 117mm x 82mm (6.1" x 4.6" x 3.2") with a weight of 895 grams (1.97 lbs).
Examine the Pentax K-S1 and Sony A850 in the new Camera and Lens Size Comparison Tool.
Remember that, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are utilizing during that time. Underneath is the front view dimension comparison of the K-S1 against the A850.
Taking into consideration size and weight, the portability grade of the K-S1 and A850 is 69 and 54 respectively.
Pentax K-S1 vs Sony A850 Sensor Comparison
Often, it is very hard to visualise the difference in sensor sizes simply by looking through specifications. The picture below should offer you a better sense of the sensor dimensions in the K-S1 and A850.
To sum up, both the cameras offer different megapixel count and different sensor sizes. The K-S1 because of its smaller sensor will make shooting shallow DOF harder and the Sony A850 will render more detail having its extra 5MP. Greater resolution will also enable you to crop images a little more aggressively. The newer K-S1 is going to have an advantage when it comes to sensor technology.
Pentax K-S1 vs Sony A850 Screen and ViewFinder
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Pentax K-S1 vs Sony A850 Specifications
| Pentax K-S1 | Sony Alpha DSLR-A850 | |
|---|---|---|
| General Information | ||
| Company | Pentax | Sony |
| Model type | Pentax K-S1 | Sony Alpha DSLR-A850 |
| Type | Advanced DSLR | Advanced DSLR |
| Released | 2014-08-27 | 2010-04-15 |
| Body design | Mid-size SLR | Mid-size SLR |
| Sensor Information | ||
| Processor Chip | Prime MII | Bionz |
| Sensor type | CMOS | CMOS |
| Sensor size | APS-C | Full frame |
| Sensor measurements | 23.5 x 15.6mm | 35.9 x 24mm |
| Sensor surface area | 366.6mm² | 861.6mm² |
| Sensor resolution | 20 megapixels | 25 megapixels |
| Anti alias filter | ||
| Aspect ratio | 3:2 | 3:2 and 16:9 |
| Highest Possible resolution | 5472 x 3648 | 6048 x 4032 |
| Maximum native ISO | 51200 | 3200 |
| Maximum enhanced ISO | - | 6400 |
| Min native ISO | 100 | 200 |
| RAW pictures | ||
| Autofocusing | ||
| Focus manually | ||
| AF touch | ||
| AF continuous | ||
| Single AF | ||
| AF tracking | ||
| AF selectice | ||
| Center weighted AF | ||
| Multi area AF | ||
| Live view AF | ||
| Face detection focusing | ||
| Contract detection focusing | ||
| Phase detection focusing | ||
| Total focus points | 11 | 9 |
| Lens | ||
| Lens mount type | Pentax KAF2 | Sony/Minolta Alpha |
| Total lenses | 151 | 143 |
| Focal length multiplier | 1.5 | 1 |
| Screen | ||
| Screen type | Fixed Type | Fixed Type |
| Screen size | 3" | 3" |
| Screen resolution | 921k dot | 922k dot |
| Selfie friendly | ||
| Liveview | ||
| Touch friendly | ||
| Screen tech | - | TFT Xtra Fine color LCD |
| Viewfinder Information | ||
| Viewfinder | Optical (pentaprism) | Optical (pentaprism) |
| Viewfinder coverage | 100 percent | 98 percent |
| Viewfinder magnification | 0.64x | 0.74x |
| Features | ||
| Minimum shutter speed | 30 seconds | 30 seconds |
| Fastest shutter speed | 1/6000 seconds | 1/8000 seconds |
| Continuous shutter speed | 5.4fps | 3.0fps |
| Shutter priority | ||
| Aperture priority | ||
| Manual exposure | ||
| Exposure compensation | Yes | Yes |
| Set WB | ||
| Image stabilization | ||
| Integrated flash | ||
| Flash distance | 10.00 m (at ISO 100) | no built-in flash |
| Flash modes | Auto, auto + redeye, on, on + redeye reduction, slow sync, trailing curtain sync, manual | Auto, On, Off, Red-Eye, Slow Sync, Rear Curtain, Fill-in, Wireless |
| External flash | ||
| AE bracketing | ||
| WB bracketing | ||
| Fastest flash sync | - | 1/250 seconds |
| Exposure | ||
| Multisegment exposure | ||
| Average exposure | ||
| Spot exposure | ||
| Partial exposure | ||
| AF area exposure | ||
| Center weighted exposure | ||
| Video features | ||
| Video resolutions | 1920 x 1080 (30,25,24 fps), 1280 x 720 (60,50 fps) | - |
| Maximum video resolution | 1920x1080 | None |
| Video file format | H.264 | - |
| Microphone input | ||
| Headphone input | ||
| Connectivity | ||
| Wireless | Eye-Fi Connected | None |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 2.0 (480 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
| GPS | Optional | None |
| Physical | ||
| Environmental seal | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 558 grams (1.23 pounds) | 895 grams (1.97 pounds) |
| Dimensions | 121 x 93 x 70mm (4.8" x 3.7" x 2.8") | 156 x 117 x 82mm (6.1" x 4.6" x 3.2") |
| DXO scores | ||
| DXO Overall rating | 78 | 79 |
| DXO Color Depth rating | 23.5 | 23.8 |
| DXO Dynamic range rating | 13.0 | 12.2 |
| DXO Low light rating | 1061 | 1415 |
| Other | ||
| Battery life | 410 photos | 880 photos |
| Type of battery | Battery Pack | Battery Pack |
| Battery ID | D-LI109 | NP-FM500H |
| Self timer | Yes ( 2 or 12 seconds) | Yes (2 or 10 sec) |
| Time lapse feature | ||
| Type of storage | SD/SDHC/SDXC | Compact Flash (Type I or II), UDMA, Memory Stick Duo / Pro Duo |
| Storage slots | One | 2 |
| Price at release | $339 | $0 |