Pentax K-r vs Sony A390
67 Imaging
53 Features
52 Overall
52
66 Imaging
54 Features
54 Overall
54
Pentax K-r vs Sony A390 Key Specs
(Full Review)
- 12MP - APS-C Sensor
- 3" Fixed Display
- ISO 200 - 12800 (Boost to 25600)
- Sensor based Image Stabilization
- 1/6000s Maximum Shutter
- 1280 x 720 video
- Pentax KAF2 Mount
- 598g - 125 x 97 x 68mm
- Announced March 2011
(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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On this page, we will be evaluating the Pentax K-r versus Sony A390, both Entry-Level DSLR cameras by companies Pentax and Sony. The image resolution of the K-r (12MP) and the A390 (14MP) is relatively close and both cameras boast the same sensor measurements (APS-C).
Photography GlossaryThe K-r was launched 8 months after the A390 which means that they are of a similar generation. Both of the cameras have the same body design (Compact SLR).
Before getting right into a in-depth comparison, here is a quick highlight of how the K-r grades against the A390 with regards to portability, imaging, features and an overall mark.
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The following is a preview of the gallery photos for Pentax K-r and Sony Alpha DSLR-A390. The complete galleries are provided at Pentax K-r Gallery and Sony A390 Gallery.
Reasons to pick Pentax K-r over the Sony A390
| K-r | A390 | |||
|---|---|---|---|---|
| Revealed | March 2011 |  | July 2010 | Newer by 8 months |
| Screen dimensions | 3" |  | 2.7" | Bigger screen (+0.3") |
| Screen resolution | 921k |  | 230k | Clearer screen (+691k dot) |
Reasons to pick Sony A390 over the Pentax K-r
| A390 | K-r | |||
|---|---|---|---|---|
| Screen type | Tilting |  | Fixed | Tilting screen |
Common features in the Pentax K-r and Sony A390
| K-r | A390 | |||
|---|---|---|---|---|
| Manual focus |  | Very exact focusing | ||
| Selfie screen |  | Lacking selfie screen | ||
| Touch screen |  | Lacking Touch screen |
Pentax K-r vs Sony A390 Physical Comparison
For anyone who is looking to travel with your camera frequently, you will want to factor its weight and size. The Pentax K-r has outer dimensions of 125mm x 97mm x 68mm (4.9" x 3.8" x 2.7") with a weight of 598 grams (1.32 lbs) and the Sony A390 has specifications of 128mm x 97mm x 86mm (5.0" x 3.8" x 3.4") with a weight of 549 grams (1.21 lbs).
Examine the Pentax K-r versus Sony A390 in the new Camera with Lens Size Comparison Tool.
Take into consideration, the weight of an Interchangeable Lens Camera will change depending on the lens you use during that time. Underneath is a front view sizing comparison of the K-r and the A390.
Using size and weight, the portability grade of the K-r and A390 is 67 and 66 respectively.
Pentax K-r vs Sony A390 Sensor Comparison
Usually, it can be tough to envision the difference in sensor dimensions merely by looking through technical specs. The image here should offer you a clearer sense of the sensor sizes in the K-r and A390.
As you have seen, the 2 cameras have the same sensor dimensions albeit not the same resolution. You should count on the Sony A390 to provide you with extra detail utilizing its extra 2 Megapixels. Higher resolution will also enable you to crop pictures a bit more aggressively. The more modern K-r will have an edge with regard to sensor tech.
Pentax K-r vs Sony A390 Screen and ViewFinder
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Pentax K-r vs Sony A390 Specifications
| Pentax K-r | Sony Alpha DSLR-A390 | |
|---|---|---|
| General Information | ||
| Brand | Pentax | Sony |
| Model type | Pentax K-r | Sony Alpha DSLR-A390 |
| Type | Entry-Level DSLR | Entry-Level DSLR |
| Announced | 2011-03-11 | 2010-07-28 |
| Body design | Compact SLR | Compact SLR |
| Sensor Information | ||
| Processor Chip | Prime II | Bionz |
| Sensor type | CMOS | CCD |
| Sensor size | APS-C | APS-C |
| Sensor dimensions | 23.6 x 15.8mm | 23.5 x 15.7mm |
| Sensor surface area | 372.9mm² | 369.0mm² |
| Sensor resolution | 12 megapixel | 14 megapixel |
| Anti alias filter | ||
| Aspect ratio | 3:2 | 3:2 and 16:9 |
| Highest Possible resolution | 4288 x 2848 | 4592 x 3056 |
| Maximum native ISO | 12800 | 3200 |
| Maximum enhanced ISO | 25600 | - |
| Minimum native ISO | 200 | 100 |
| RAW photos | ||
| Minimum enhanced ISO | 100 | - |
| Autofocusing | ||
| Focus manually | ||
| AF touch | ||
| Continuous AF | ||
| Single AF | ||
| AF tracking | ||
| AF selectice | ||
| Center weighted AF | ||
| AF multi area | ||
| Live view AF | ||
| Face detect AF | ||
| Contract detect AF | ||
| Phase detect AF | ||
| Total focus points | 11 | 9 |
| Cross type focus points | 9 | - |
| Lens | ||
| Lens support | Pentax KAF2 | Sony/Minolta Alpha |
| Total lenses | 151 | 143 |
| Focal length multiplier | 1.5 | 1.5 |
| Screen | ||
| Display type | Fixed Type | Tilting |
| Display diagonal | 3 inch | 2.7 inch |
| Display resolution | 921 thousand dot | 230 thousand dot |
| Selfie friendly | ||
| Liveview | ||
| Touch capability | ||
| Display technology | TFT LCD monitor | - |
| Viewfinder Information | ||
| Viewfinder | Optical (pentamirror) | Optical (pentamirror) |
| Viewfinder coverage | 96% | 95% |
| Viewfinder magnification | 0.57x | 0.49x |
| Features | ||
| Min shutter speed | 30 seconds | 30 seconds |
| Max shutter speed | 1/6000 seconds | 1/4000 seconds |
| Continuous shutter speed | 6.0 frames/s | 3.0 frames/s |
| Shutter priority | ||
| Aperture priority | ||
| Manually set exposure | ||
| Exposure compensation | Yes | Yes |
| Custom WB | ||
| Image stabilization | ||
| Inbuilt flash | ||
| Flash distance | 12.00 m (at ISO 100) | 10.00 m (at ISO 100) |
| Flash settings | Auto, Red-eye Reduction, Slow-speed Sync, Trailing Curtain Sync, High-Speed Sync and Wireless Sync | Auto, On, Off, Red-Eye, Slow Sync, Rear Curtain, Wireless |
| Hot shoe | ||
| Auto exposure bracketing | ||
| White balance bracketing | ||
| Max flash sync | 1/180 seconds | 1/160 seconds |
| Exposure | ||
| Multisegment metering | ||
| Average metering | ||
| Spot metering | ||
| Partial metering | ||
| AF area metering | ||
| Center weighted metering | ||
| Video features | ||
| Video resolutions | 1280 x 720 (25 fps), 640 x 480 (25 fps) | - |
| Maximum video resolution | 1280x720 | None |
| Video format | Motion JPEG | - |
| Mic input | ||
| Headphone input | ||
| Connectivity | ||
| Wireless | None | 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 | 598g (1.32 pounds) | 549g (1.21 pounds) |
| Physical dimensions | 125 x 97 x 68mm (4.9" x 3.8" x 2.7") | 128 x 97 x 86mm (5.0" x 3.8" x 3.4") |
| DXO scores | ||
| DXO Overall rating | 72 | 66 |
| DXO Color Depth rating | 22.9 | 22.5 |
| DXO Dynamic range rating | 12.4 | 11.5 |
| DXO Low light rating | 755 | 607 |
| Other | ||
| Battery life | 470 photos | 230 photos |
| Style of battery | Battery Pack | Battery Pack |
| Battery ID | D-LI109,4 x AA | NP-FH50 |
| Self timer | Yes (2 or 12 sec) | Yes (2 or 10 sec) |
| Time lapse recording | ||
| Type of storage | SD/SDHC | SD/ SDHC, Memory Stick Pro Duo |
| Storage slots | 1 | 1 |
| Price at release | $1,100 | $500 |