Nikon D5100 vs Pentax K-x
66 Imaging
57 Features
81 Overall
66
69 Imaging
52 Features
47 Overall
50
Nikon D5100 vs Pentax K-x Key Specs
(Full Review)
- 16MP - APS-C Sensor
- 3" Fully Articulated Screen
- ISO 100 - 6400 (Bump to 25600)
- 1920 x 1080 video
- Nikon F Mount
- 560g - 128 x 97 x 79mm
- Launched April 2011
- Superseded the Nikon D5000
- Refreshed by Nikon D5200
(Full Review)
- 12MP - APS-C Sensor
- 2.7" Fixed Screen
- ISO 100 - 6400 (Expand to 12800)
- Sensor based Image Stabilization
- 1/6000s Maximum Shutter
- 1280 x 720 video
- Pentax KAF2 Mount
- 580g - 123 x 92 x 68mm
- Revealed December 2009
Cutting-edge AI developed by Apple deciphers subtle nuances in pixels Nikon D5100 vs Pentax K-x Overview
Lets look a bit more in depth at the Nikon D5100 versus Pentax K-x, both Entry-Level DSLR cameras by manufacturers Nikon and Pentax. There is a noticeable difference among the image resolutions of the D5100 (16MP) and K-x (12MP) but they use the exact same sensor measurements (APS-C).
Snapchat Adds Watermarks to AI-Created ImagesThe D5100 was announced 17 months later than the K-x which makes the cameras a generation apart from each other. Each of the cameras come with the identical body type (Compact SLR).
Before delving straight into a detailed comparison, below is a short highlight of how the D5100 scores against the K-x with regard to portability, imaging, features and an overall rating.
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This is a preview of the gallery photos for Nikon D5100 & Pentax K-x. The whole galleries are provided at Nikon D5100 Gallery & Pentax K-x Gallery.
Reasons to pick Nikon D5100 over the Pentax K-x
| D5100 | K-x | |||
|---|---|---|---|---|
| Revealed | April 2011 |  | December 2009 | Fresher by 17 months |
| Screen type | Fully Articulated |  | Fixed | Fully Articulating screen |
| Screen dimension | 3" |  | 2.7" | Bigger screen (+0.3") |
| Screen resolution | 921k |  | 230k | Crisper screen (+691k dot) |
| Selfie screen |  | Easy selfies |
Reasons to pick Pentax K-x over the Nikon D5100
| K-x | D5100 |
|---|
Common features in the Nikon D5100 and Pentax K-x
| D5100 | K-x | |||
|---|---|---|---|---|
| Focus manually |  | Very exact focus | ||
| Touch screen |  | Neither provides Touch screen |
Nikon D5100 vs Pentax K-x Physical Comparison
If you're going to carry your camera regularly, you'll need to take into account its weight and volume. The Nikon D5100 provides outside measurements of 128mm x 97mm x 79mm (5.0" x 3.8" x 3.1") having a weight of 560 grams (1.23 lbs) while the Pentax K-x has sizing of 123mm x 92mm x 68mm (4.8" x 3.6" x 2.7") with a weight of 580 grams (1.28 lbs).
Contrast the Nikon D5100 versus Pentax K-x in our completely new Camera & Lens Size Comparison Tool.
Take into account, the weight of an ILC will differ depending on the lens you have at that moment. Underneath is the front view proportions comparison of the D5100 and the K-x.
Considering size and weight, the portability score of the D5100 and K-x is 66 and 69 respectively.
Nikon D5100 vs Pentax K-x Sensor Comparison
Often, it is hard to picture the contrast in sensor sizing simply by researching technical specs. The visual below might offer you a more clear sense of the sensor measurements in the D5100 and K-x.
As you have seen, the 2 cameras posses the exact same sensor measurements albeit different resolution. You can count on the Nikon D5100 to provide you with more detail with its extra 4 Megapixels. Higher resolution will allow you to crop pictures somewhat more aggressively. The younger D5100 should have a benefit when it comes to sensor tech.
Nikon D5100 vs Pentax K-x Screen and ViewFinder
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Nikon D5100 vs Pentax K-x Specifications
| Nikon D5100 | Pentax K-x | |
|---|---|---|
| General Information | ||
| Brand | Nikon | Pentax |
| Model | Nikon D5100 | Pentax K-x |
| Class | Entry-Level DSLR | Entry-Level DSLR |
| Launched | 2011-04-26 | 2009-12-23 |
| Physical type | Compact SLR | Compact SLR |
| Sensor Information | ||
| Processor Chip | Expeed 2 | Prime |
| Sensor type | CMOS | CMOS |
| Sensor size | APS-C | APS-C |
| Sensor dimensions | 23.6 x 15.7mm | 23.6 x 15.8mm |
| Sensor surface area | 370.5mm² | 372.9mm² |
| Sensor resolution | 16 megapixels | 12 megapixels |
| Anti aliasing filter | ||
| Aspect ratio | 3:2 | 3:2 |
| Maximum resolution | 4928 x 3264 | 4288 x 2848 |
| Maximum native ISO | 6400 | 6400 |
| Maximum boosted ISO | 25600 | 12800 |
| Lowest native ISO | 100 | 100 |
| RAW files | ||
| Autofocusing | ||
| Focus manually | ||
| Touch to focus | ||
| Autofocus continuous | ||
| Autofocus single | ||
| Autofocus tracking | ||
| Selective autofocus | ||
| Autofocus center weighted | ||
| Multi area autofocus | ||
| Autofocus live view | ||
| Face detection focus | ||
| Contract detection focus | ||
| Phase detection focus | ||
| Number of focus points | 11 | 11 |
| Cross focus points | 1 | - |
| Lens | ||
| Lens mount | Nikon F | Pentax KAF2 |
| Total lenses | 309 | 151 |
| Crop factor | 1.5 | 1.5 |
| Screen | ||
| Screen type | Fully Articulated | Fixed Type |
| Screen diagonal | 3" | 2.7" |
| Resolution of screen | 921 thousand dots | 230 thousand dots |
| Selfie friendly | ||
| Liveview | ||
| Touch functionality | ||
| Screen technology | TFT LCD monitor | TFT LCD monitor |
| Viewfinder Information | ||
| Viewfinder type | Optical (pentamirror) | Optical (pentamirror) |
| Viewfinder coverage | 95% | 96% |
| Viewfinder magnification | 0.52x | 0.57x |
| Features | ||
| Lowest shutter speed | 30s | 30s |
| Highest shutter speed | 1/4000s | 1/6000s |
| Continuous shooting rate | 4.0 frames per second | 5.0 frames per second |
| Shutter priority | ||
| Aperture priority | ||
| Manual mode | ||
| Exposure compensation | Yes | Yes |
| Set white balance | ||
| Image stabilization | ||
| Built-in flash | ||
| Flash range | 12.00 m (at ISO 100) | 16.00 m |
| Flash options | Auto, On, Off, Red-eye, Slow sync, Rear curtain | Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless |
| External flash | ||
| AE bracketing | ||
| White balance bracketing | ||
| Highest flash synchronize | 1/200s | 1/180s |
| 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 (30, 25, 24 fps), 640 x 424 (30, 25 fps) | 1280 x 720 (24 fps), 640 x 416 (24 fps) |
| Maximum video resolution | 1920x1080 | 1280x720 |
| Video format | MPEG-4 | Motion JPEG |
| Mic port | ||
| Headphone port | ||
| 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 sealing | ||
| Water proof | ||
| Dust proof | ||
| Shock proof | ||
| Crush proof | ||
| Freeze proof | ||
| Weight | 560 gr (1.23 lbs) | 580 gr (1.28 lbs) |
| Dimensions | 128 x 97 x 79mm (5.0" x 3.8" x 3.1") | 123 x 92 x 68mm (4.8" x 3.6" x 2.7") |
| DXO scores | ||
| DXO All around score | 80 | 72 |
| DXO Color Depth score | 23.5 | 22.8 |
| DXO Dynamic range score | 13.6 | 12.5 |
| DXO Low light score | 1183 | 811 |
| Other | ||
| Battery life | 660 photos | 1900 photos |
| Battery type | Battery Pack | Battery Pack |
| Battery model | EN-EL14 | 4 x AA |
| Self timer | Yes (2, 5, 10 or 20 sec) | Yes (2 or 12 sec) |
| Time lapse shooting | ||
| Type of storage | SD/SDHC/SDXC | SD/SDHC card |
| Card slots | 1 | 1 |
| Launch pricing | $0 | $600 |
