Pentax K-x vs Sony A77 II
69 Imaging
51 Features
47 Overall
49
62 Imaging
64 Features
85 Overall
72
Pentax K-x vs Sony A77 II Key Specs
(Full Review)
- 12MP - APS-C Sensor
- 2.7" Fixed Screen
- ISO 100 - 6400 (Bump to 12800)
- Sensor based Image Stabilization
- 1/6000s Max Shutter
- 1280 x 720 video
- Pentax KAF2 Mount
- 580g - 123 x 92 x 68mm
- Released December 2009
(Full Review)
- 24MP - APS-C Sensor
- 3" Fully Articulated Display
- ISO 50 - 25600
- Sensor based Image Stabilization
- 1/8000s Max Shutter
- 1920 x 1080 video
- Sony/Minolta Alpha Mount
- 647g - 143 x 104 x 81mm
- Released May 2014
- Succeeded the Sony A77
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Below, we are analyzing the Pentax K-x and Sony A77 II, one being a Entry-Level DSLR and the other is a Advanced DSLR by brands Pentax and Sony. There exists a crucial gap among the resolutions of the K-x (12MP) and A77 II (24MP) but they possess the exact same sensor measurements (APS-C).
Photobucket discusses licensing 13 billion images with AI firmsThe K-x was released 5 years before the A77 II and that is a fairly serious gap as far as camera technology is concerned. Both of these cameras come with different body type with the Pentax K-x being a Compact SLR camera and the Sony A77 II being a Mid-size SLR camera.
Before going in to a in depth comparison, below is a short summary of how the K-x matches up versus the A77 II in relation to portability, imaging, features and an overall rating.
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Here is a sample of the gallery pics for Pentax K-x and Sony SLT-A77 II. The complete galleries are viewable at Pentax K-x Gallery and Sony A77 II Gallery.
Reasons to pick Pentax K-x over the Sony A77 II
| K-x | A77 II |
|---|
Reasons to pick Sony A77 II over the Pentax K-x
| A77 II | K-x | |||
|---|---|---|---|---|
| Released | May 2014 | December 2009 | Fresher by 53 months | |
| Display type | Fully Articulated | Fixed | Fully Articulating display | |
| Display dimension | 3" | 2.7" | Larger display (+0.3") | |
| Display resolution | 1229k | 230k | Sharper display (+999k dot) | |
| Selfie screen | Easy selfies |
Common features in the Pentax K-x and Sony A77 II
| K-x | A77 II | |||
|---|---|---|---|---|
| Manual focus | More exact focusing | |||
| Touch friendly display | Neither offers Touch friendly display |
Pentax K-x vs Sony A77 II Physical Comparison
For anybody who is going to carry your camera frequently, you are going to need to factor in its weight and proportions. The Pentax K-x offers exterior measurements of 123mm x 92mm x 68mm (4.8" x 3.6" x 2.7") along with a weight of 580 grams (1.28 lbs) while the Sony A77 II has measurements of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") having a weight of 647 grams (1.43 lbs).
Examine the Pentax K-x and Sony A77 II in the new Camera and Lens Size Comparison Tool.
Always remember, the weight of an Interchangeable Lens Camera will change based on the lens you are employing at that time. The following is the front view dimension comparison of the K-x and the A77 II.

Factoring in dimensions and weight, the portability grade of the K-x and A77 II is 69 and 62 respectively.
Pentax K-x vs Sony A77 II Sensor Comparison
Quite often, it can be hard to see the gap in sensor sizing merely by seeing a spec sheet. The photograph below may give you a more clear sense of the sensor sizing in the K-x and A77 II.
Clearly, both of the cameras have got the exact same sensor measurements but not the same megapixels. You should expect to see the Sony A77 II to show greater detail as a result of its extra 12 Megapixels. Greater resolution will help you crop pics much more aggressively. The older K-x will be behind when it comes to sensor tech.
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Pentax K-x vs Sony A77 II Specifications
| Pentax K-x | Sony SLT-A77 II | |
|---|---|---|
| General Information | ||
| Manufacturer | Pentax | Sony |
| Model | Pentax K-x | Sony SLT-A77 II |
| Class | Entry-Level DSLR | Advanced DSLR |
| Released | 2009-12-23 | 2014-05-21 |
| Body design | Compact SLR | Mid-size SLR |
| Sensor Information | ||
| Powered by | Prime | Bionz X |
| Sensor type | CMOS | CMOS |
| Sensor size | APS-C | APS-C |
| Sensor measurements | 23.6 x 15.8mm | 23.5 x 15.6mm |
| Sensor area | 372.9mm² | 366.6mm² |
| Sensor resolution | 12MP | 24MP |
| Anti aliasing filter | ||
| Aspect ratio | 3:2 | 3:2 and 16:9 |
| Maximum resolution | 4288 x 2848 | 6000 x 4000 |
| Maximum native ISO | 6400 | 25600 |
| Maximum boosted ISO | 12800 | - |
| Min native ISO | 100 | 50 |
| RAW pictures | ||
| Autofocusing | ||
| Manual focus | ||
| AF touch | ||
| AF continuous | ||
| AF single | ||
| Tracking AF | ||
| Selective AF | ||
| Center weighted AF | ||
| Multi area AF | ||
| AF live view | ||
| Face detection focusing | ||
| Contract detection focusing | ||
| Phase detection focusing | ||
| Number of focus points | 11 | 79 |
| Cross focus points | - | 15 |
| Lens | ||
| Lens mounting type | Pentax KAF2 | Sony/Minolta Alpha |
| Number of lenses | 151 | 143 |
| Crop factor | 1.5 | 1.5 |
| Screen | ||
| Screen type | Fixed Type | Fully Articulated |
| Screen size | 2.7 inch | 3 inch |
| Resolution of screen | 230 thousand dot | 1,229 thousand dot |
| Selfie friendly | ||
| Liveview | ||
| Touch friendly | ||
| Screen tech | TFT LCD monitor | - |
| Viewfinder Information | ||
| Viewfinder type | Optical (pentamirror) | Electronic |
| Viewfinder resolution | - | 2,359 thousand dot |
| Viewfinder coverage | 96% | 100% |
| Viewfinder magnification | 0.57x | 0.73x |
| Features | ||
| Lowest shutter speed | 30s | 30s |
| Highest shutter speed | 1/6000s | 1/8000s |
| Continuous shooting speed | 5.0 frames per sec | 12.0 frames per sec |
| Shutter priority | ||
| Aperture priority | ||
| Manually set exposure | ||
| Exposure compensation | Yes | Yes |
| Change WB | ||
| Image stabilization | ||
| Integrated flash | ||
| Flash range | 16.00 m | 12.00 m (at ISO 100) |
| Flash settings | Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless | Auto, fill, rear sync, slow sync |
| Hot shoe | ||
| AE bracketing | ||
| WB bracketing | ||
| Highest flash sync | 1/180s | 1/250s |
| Exposure | ||
| Multisegment exposure | ||
| Average exposure | ||
| Spot exposure | ||
| Partial exposure | ||
| AF area exposure | ||
| Center weighted exposure | ||
| Video features | ||
| Video resolutions | 1280 x 720 (24 fps), 640 x 416 (24 fps) | 1920 x 1080 (60p, 60i, 30p), 1440 x 1080 (30p), 640 x 480 (30p) |
| Maximum video resolution | 1280x720 | 1920x1080 |
| Video file format | Motion JPEG | MPEG-4, AVCHD, XAVC S |
| Microphone jack | ||
| Headphone jack | ||
| 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 | ||
| Environment seal | ||
| Water proof | ||
| Dust proof | ||
| Shock proof | ||
| Crush proof | ||
| Freeze proof | ||
| Weight | 580g (1.28 lbs) | 647g (1.43 lbs) |
| Dimensions | 123 x 92 x 68mm (4.8" x 3.6" x 2.7") | 143 x 104 x 81mm (5.6" x 4.1" x 3.2") |
| DXO scores | ||
| DXO All around score | 72 | 82 |
| DXO Color Depth score | 22.8 | 24.4 |
| DXO Dynamic range score | 12.5 | 13.4 |
| DXO Low light score | 811 | 1013 |
| Other | ||
| Battery life | 1900 pictures | 480 pictures |
| Battery form | Battery Pack | Battery Pack |
| Battery model | 4 x AA | NP-FM500H |
| Self timer | Yes (2 or 12 sec) | Yes (Yes (2 or 12 sec)) |
| Time lapse feature | ||
| Type of storage | SD/SDHC card | SD/ SDHC/SDXC, Memory Stick Pro Duo/ Pro-HG Duo |
| Storage slots | One | One |
| Price at launch | $600 | $1,198 |