Pentax K-x vs Sony A390
69 Imaging
52 Features
47 Overall
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66 Imaging
54 Features
54 Overall
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Pentax K-x vs Sony A390 Key Specs
(Full Review)
- 12MP - APS-C Sensor
- 2.7" Fixed Screen
- ISO 100 - 6400 (Bump to 12800)
- Sensor based Image Stabilization
- 1/6000s Maximum Shutter
- 1280 x 720 video
- Pentax KAF2 Mount
- 580g - 123 x 92 x 68mm
- Introduced December 2009
(Full Review)
- 14MP - APS-C Sensor
- 2.7" Tilting Screen
- ISO 100 - 3200
- Sensor based Image Stabilization
- No Video
- Sony/Minolta Alpha Mount
- 549g - 128 x 97 x 86mm
- Revealed July 2010
- Previous Model is Sony A380
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Lets look closer at the Pentax K-x versus Sony A390, both Entry-Level DSLR cameras by companies Pentax and Sony. The resolution of the K-x (12MP) and the A390 (14MP) is relatively close and both cameras provide the identical sensor sizes (APS-C).
Photography GlossaryThe K-x was revealed 7 months earlier than the A390 and they are of a similar age. Each of the cameras feature the same body design (Compact SLR).
Before diving right into a thorough comparison, here is a short summary of how the K-x matches up vs the A390 in the way of portability, imaging, features and an overall mark.
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The following is a preview of the gallery photos for Pentax K-x & Sony Alpha DSLR-A390. The full galleries are provided at Pentax K-x Gallery & Sony A390 Gallery.
Reasons to pick Pentax K-x over the Sony A390
| K-x | A390 |
|---|
Reasons to pick Sony A390 over the Pentax K-x
| A390 | K-x | |||
|---|---|---|---|---|
| Revealed | July 2010 |  | December 2009 | Newer by 7 months |
| Screen type | Tilting |  | Fixed | Tilting screen |
Common features in the Pentax K-x and Sony A390
| K-x | A390 | |||
|---|---|---|---|---|
| Manual focus |  | Very precise focus | ||
| Screen size | 2.7" |  | 2.7" | Same screen dimensions |
| Screen resolution | 230k |  | 230k | Exact same screen resolution |
| Selfie screen |  | Neither features selfie screen | ||
| Touch screen |  | Absent Touch screen |
Pentax K-x vs Sony A390 Physical Comparison
For anyone who is going to travel with your camera frequently, you'll need to consider its weight and proportions. The Pentax K-x enjoys physical dimensions of 123mm x 92mm x 68mm (4.8" x 3.6" x 2.7") with a weight of 580 grams (1.28 lbs) while the Sony A390 has measurements of 128mm x 97mm x 86mm (5.0" x 3.8" x 3.4") accompanied by a weight of 549 grams (1.21 lbs).
Check the Pentax K-x versus Sony A390 in our brand new Camera plus Lens Size Comparison Tool.
Take into account, the weight of an ILC will differ based on the lens you are employing at that moment. Here is a front view over all size comparison of the K-x and the A390.
Looking at size and weight, the portability grade of the K-x and A390 is 69 and 66 respectively.
Pentax K-x vs Sony A390 Sensor Comparison
In many cases, its tough to envision the gap in sensor dimensions simply by looking through technical specs. The picture here may provide you a clearer sense of the sensor sizes in the K-x and A390.
As you can tell, each of these cameras come with the identical sensor size albeit not the same MP. You can count on the Sony A390 to result in greater detail because of its extra 2MP. Higher resolution will enable you to crop pictures a good deal more aggressively. The more aged K-x will be disadvantaged with regard to sensor innovation.
Pentax K-x vs Sony A390 Screen and ViewFinder
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Pentax K-x vs Sony A390 Specifications
| Pentax K-x | Sony Alpha DSLR-A390 | |
|---|---|---|
| General Information | ||
| Manufacturer | Pentax | Sony |
| Model | Pentax K-x | Sony Alpha DSLR-A390 |
| Type | Entry-Level DSLR | Entry-Level DSLR |
| Introduced | 2009-12-23 | 2010-07-28 |
| Physical type | Compact SLR | Compact SLR |
| Sensor Information | ||
| Chip | Prime | Bionz |
| Sensor type | CMOS | CCD |
| Sensor size | APS-C | APS-C |
| Sensor dimensions | 23.6 x 15.8mm | 23.5 x 15.7mm |
| Sensor area | 372.9mm² | 369.0mm² |
| Sensor resolution | 12 megapixel | 14 megapixel |
| Anti aliasing filter | ||
| Aspect ratio | 3:2 | 3:2 and 16:9 |
| Highest resolution | 4288 x 2848 | 4592 x 3056 |
| Highest native ISO | 6400 | 3200 |
| Highest boosted ISO | 12800 | - |
| Min native ISO | 100 | 100 |
| RAW pictures | ||
| Autofocusing | ||
| Manual focus | ||
| Autofocus touch | ||
| Continuous autofocus | ||
| Single autofocus | ||
| Autofocus tracking | ||
| Autofocus selectice | ||
| Autofocus center weighted | ||
| Autofocus multi area | ||
| Live view autofocus | ||
| Face detection autofocus | ||
| Contract detection autofocus | ||
| Phase detection autofocus | ||
| Number of focus points | 11 | 9 |
| Lens | ||
| Lens mounting type | Pentax KAF2 | Sony/Minolta Alpha |
| Amount of lenses | 151 | 143 |
| Crop factor | 1.5 | 1.5 |
| Screen | ||
| Type of screen | Fixed Type | Tilting |
| Screen diagonal | 2.7 inches | 2.7 inches |
| Screen resolution | 230k dots | 230k dots |
| Selfie friendly | ||
| Liveview | ||
| Touch functionality | ||
| Screen technology | TFT LCD monitor | - |
| Viewfinder Information | ||
| Viewfinder type | Optical (pentamirror) | Optical (pentamirror) |
| Viewfinder coverage | 96 percent | 95 percent |
| Viewfinder magnification | 0.57x | 0.49x |
| Features | ||
| Slowest shutter speed | 30s | 30s |
| Maximum shutter speed | 1/6000s | 1/4000s |
| Continuous shooting rate | 5.0 frames/s | 3.0 frames/s |
| Shutter priority | ||
| Aperture priority | ||
| Manual mode | ||
| Exposure compensation | Yes | Yes |
| Custom white balance | ||
| Image stabilization | ||
| Inbuilt flash | ||
| Flash range | 16.00 m | 10.00 m (at ISO 100) |
| Flash modes | Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless | Auto, On, Off, Red-Eye, Slow Sync, Rear Curtain, Wireless |
| Hot shoe | ||
| AEB | ||
| White balance bracketing | ||
| Maximum flash synchronize | 1/180s | 1/160s |
| Exposure | ||
| Multisegment | ||
| Average | ||
| Spot | ||
| Partial | ||
| AF area | ||
| Center weighted | ||
| Video features | ||
| Video resolutions | 1280 x 720 (24 fps), 640 x 416 (24 fps) | - |
| Highest video resolution | 1280x720 | None |
| Video file format | Motion JPEG | - |
| Mic 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 | ||
| Environment sealing | ||
| Water proof | ||
| Dust proof | ||
| Shock proof | ||
| Crush proof | ||
| Freeze proof | ||
| Weight | 580 grams (1.28 lb) | 549 grams (1.21 lb) |
| Physical dimensions | 123 x 92 x 68mm (4.8" x 3.6" x 2.7") | 128 x 97 x 86mm (5.0" x 3.8" x 3.4") |
| DXO scores | ||
| DXO All around score | 72 | 66 |
| DXO Color Depth score | 22.8 | 22.5 |
| DXO Dynamic range score | 12.5 | 11.5 |
| DXO Low light score | 811 | 607 |
| Other | ||
| Battery life | 1900 photos | 230 photos |
| Battery style | Battery Pack | Battery Pack |
| Battery model | 4 x AA | NP-FH50 |
| Self timer | Yes (2 or 12 sec) | Yes (2 or 10 sec) |
| Time lapse shooting | ||
| Type of storage | SD/SDHC card | SD/ SDHC, Memory Stick Pro Duo |
| Card slots | 1 | 1 |
| Launch price | $600 | $500 |