Nikon D3100 vs Pentax K-x
68 Imaging
54 Features
59 Overall
56
69 Imaging
52 Features
47 Overall
50
Nikon D3100 vs Pentax K-x Key Specs
(Full Review)
- 14MP - APS-C Sensor
- 3" Fixed Screen
- ISO 100 - 3200 (Bump to 12800)
- 1920 x 1080 video
- Nikon F Mount
- 505g - 124 x 96 x 75mm
- Introduced December 2010
- Previous Model is Nikon D3000
- Newer Model is Nikon D3200
(Full Review)
- 12MP - APS-C Sensor
- 2.7" Fixed Display
- ISO 100 - 6400 (Increase to 12800)
- Sensor based Image Stabilization
- 1/6000s Max Shutter
- 1280 x 720 video
- Pentax KAF2 Mount
- 580g - 123 x 92 x 68mm
- Revealed December 2009
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Below is a extensive assessment of the Nikon D3100 versus Pentax K-x, both Entry-Level DSLR digital cameras by brands Nikon and Pentax. The resolution of the D3100 (14MP) and the K-x (12MP) is fairly similar and they come with the exact same sensor sizing (APS-C).
Photography GlossaryThe D3100 was announced 13 months later than the K-x making the cameras a generation apart from each other. Each of the cameras come with the identical body type (Compact SLR).
Before we go in to a in depth comparison, below is a short view of how the D3100 grades versus the K-x in relation to portability, imaging, features and an overall grade.
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This is a sample of the gallery pictures for Nikon D3100 and Pentax K-x. The whole galleries are viewable at Nikon D3100 Gallery and Pentax K-x Gallery.
Reasons to pick Nikon D3100 over the Pentax K-x
| D3100 | K-x | |||
|---|---|---|---|---|
| Revealed | December 2010 |  | December 2009 | More recent by 13 months |
| Display dimension | 3" |  | 2.7" | Larger display (+0.3") |
Reasons to pick Pentax K-x over the Nikon D3100
| K-x | D3100 |
|---|
Common features in the Nikon D3100 and Pentax K-x
| D3100 | K-x | |||
|---|---|---|---|---|
| Focus manually |  | Dial exact focus | ||
| Display type | Fixed |  | Fixed | Fixed display |
| Display resolution | 230k |  | 230k | Same display resolution |
| Selfie screen |  | Neither includes selfie screen | ||
| Touch display |  | Neither includes Touch display |
Nikon D3100 vs Pentax K-x Physical Comparison
In case you're intending to lug around your camera regularly, you're going to have to take into account its weight and volume. The Nikon D3100 features exterior dimensions of 124mm x 96mm x 75mm (4.9" x 3.8" x 3.0") with a weight of 505 grams (1.11 lbs) and the Pentax K-x has sizing of 123mm x 92mm x 68mm (4.8" x 3.6" x 2.7") and a weight of 580 grams (1.28 lbs).
Analyze the Nikon D3100 versus Pentax K-x in the latest Camera with Lens Size Comparison Tool.
Don't forget, the weight of an Interchangeable Lens Camera will differ based on the lens you choose during that time. Underneath is the front view dimension comparison of the D3100 vs the K-x.
Taking into consideration size and weight, the portability rating of the D3100 and K-x is 68 and 69 respectively.
Nikon D3100 vs Pentax K-x Sensor Comparison
In many cases, it is very difficult to picture the gap between sensor measurements only by going over technical specs. The photograph underneath might provide you a better sense of the sensor dimensions in the D3100 and K-x.
As you can tell, the two cameras have got the exact same sensor measurements but different resolution. You should anticipate the Nikon D3100 to deliver more detail with its extra 2 Megapixels. Greater resolution will allow you to crop photos much more aggressively. The younger D3100 should have a benefit when it comes to sensor tech.
Nikon D3100 vs Pentax K-x Screen and ViewFinder
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Nikon D3100 vs Pentax K-x Specifications
| Nikon D3100 | Pentax K-x | |
|---|---|---|
| General Information | ||
| Brand | Nikon | Pentax |
| Model | Nikon D3100 | Pentax K-x |
| Type | Entry-Level DSLR | Entry-Level DSLR |
| Introduced | 2010-12-21 | 2009-12-23 |
| Body design | Compact SLR | Compact SLR |
| Sensor Information | ||
| Processor Chip | Expeed 2 | Prime |
| Sensor type | CMOS | CMOS |
| Sensor size | APS-C | APS-C |
| Sensor measurements | 23.1 x 15.4mm | 23.6 x 15.8mm |
| Sensor surface area | 355.7mm² | 372.9mm² |
| Sensor resolution | 14 megapixels | 12 megapixels |
| Anti aliasing filter | ||
| Aspect ratio | 3:2 | 3:2 |
| Highest Possible resolution | 4608 x 3072 | 4288 x 2848 |
| Maximum native ISO | 3200 | 6400 |
| Maximum enhanced ISO | 12800 | 12800 |
| Min native ISO | 100 | 100 |
| RAW files | ||
| Autofocusing | ||
| Focus manually | ||
| AF touch | ||
| Continuous AF | ||
| Single AF | ||
| Tracking AF | ||
| AF selectice | ||
| Center weighted AF | ||
| AF multi area | ||
| Live view AF | ||
| Face detection AF | ||
| Contract detection AF | ||
| Phase detection AF | ||
| Number of focus points | 11 | 11 |
| Cross focus points | 1 | - |
| Lens | ||
| Lens mount | Nikon F | Pentax KAF2 |
| Total lenses | 309 | 151 |
| Crop factor | 1.6 | 1.5 |
| Screen | ||
| Screen type | Fixed Type | Fixed Type |
| Screen size | 3 inch | 2.7 inch |
| Resolution of screen | 230k dot | 230k dot |
| Selfie friendly | ||
| Liveview | ||
| Touch display | ||
| Screen tech | TFT LCD monitor | TFT LCD monitor |
| Viewfinder Information | ||
| Viewfinder type | Optical (pentamirror) | Optical (pentamirror) |
| Viewfinder coverage | 95 percent | 96 percent |
| Viewfinder magnification | 0.53x | 0.57x |
| Features | ||
| Min shutter speed | 30s | 30s |
| Max shutter speed | 1/4000s | 1/6000s |
| Continuous shutter speed | 3.0 frames/s | 5.0 frames/s |
| Shutter priority | ||
| Aperture priority | ||
| Expose Manually | ||
| Exposure compensation | Yes | Yes |
| Change WB | ||
| Image stabilization | ||
| Integrated flash | ||
| Flash range | 12.00 m (at ISO 100) | 16.00 m |
| Flash settings | Auto, Red-Eye, Slow, Red-Eye Slow, Rear curtain | Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless |
| Hot shoe | ||
| Auto exposure bracketing | ||
| White balance bracketing | ||
| Max flash sync | 1/200s | 1/180s |
| Exposure | ||
| Multisegment metering | ||
| Average metering | ||
| Spot metering | ||
| Partial metering | ||
| AF area metering | ||
| Center weighted metering | ||
| Video features | ||
| Video resolutions | 1920 x 1080 (24 fps), 1280 x 720 (30, 25, 24 fps), 640 x 424 (24 fps) | 1280 x 720 (24 fps), 640 x 416 (24 fps) |
| Maximum video resolution | 1920x1080 | 1280x720 |
| Video file format | MPEG-4 | Motion JPEG |
| Microphone jack | ||
| Headphone jack | ||
| 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 | ||
| Environment seal | ||
| Water proof | ||
| Dust proof | ||
| Shock proof | ||
| Crush proof | ||
| Freeze proof | ||
| Weight | 505 grams (1.11 lbs) | 580 grams (1.28 lbs) |
| Dimensions | 124 x 96 x 75mm (4.9" x 3.8" x 3.0") | 123 x 92 x 68mm (4.8" x 3.6" x 2.7") |
| DXO scores | ||
| DXO Overall score | 67 | 72 |
| DXO Color Depth score | 22.5 | 22.8 |
| DXO Dynamic range score | 11.3 | 12.5 |
| DXO Low light score | 919 | 811 |
| Other | ||
| Battery life | 550 shots | 1900 shots |
| Battery form | Battery Pack | Battery Pack |
| Battery model | EN-EL14 | 4 x AA |
| Self timer | Yes | Yes (2 or 12 sec) |
| Time lapse recording | ||
| Type of storage | SD/SDHC/SDXC | SD/SDHC card |
| Storage slots | Single | Single |
| Pricing at release | $565 | $600 |