Nikon D5100 vs Sony A57
66 Imaging
56 Features
81 Overall
66
64 Imaging
57 Features
85 Overall
68
Nikon D5100 vs Sony A57 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
- Released April 2011
- Superseded the Nikon D5000
- Later Model is Nikon D5200
(Full Review)
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Here is a comprehensive comparison of the Nikon D5100 and Sony A57, both Entry-Level DSLR cameras by rivals Nikon and Sony. The image resolution of the D5100 (16MP) and the A57 (16MP) is very close and they use the exact same sensor dimensions (APS-C).
Samsung Releases Faster Versions of EVO MicroSD CardsThe D5100 was launched 16 months before the A57 making the cameras a generation apart from one another. The two cameras come with the identical body type (Compact SLR).
Before diving in to a step-by-step comparison, below is a short view of how the D5100 grades versus the A57 in terms of portability, imaging, features and an overall rating.
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Reasons to pick Nikon D5100 over the Sony A57
| D5100 | A57 |
|---|
Reasons to pick Sony A57 over the Nikon D5100
| A57 | D5100 | |||
|---|---|---|---|---|
| Introduced | September 2012 |  | April 2011 | Fresher by 16 months |
Common features in the Nikon D5100 and Sony A57
| D5100 | A57 | |||
|---|---|---|---|---|
| Focus manually |  | Very exact focusing | ||
| Display type | Fully Articulated |  | Fully Articulated | Fully Articulated display |
| Display dimension | 3" |  | 3" | Identical display sizing |
| Display resolution | 921k |  | 921k | Same display resolution |
| Selfie screen |  | Both good for selfies | ||
| Touch display |  | No Touch display |
Nikon D5100 vs Sony A57 Physical Comparison
If you are going to carry your camera frequently, you'll need to take into account its weight and size. The Nikon D5100 enjoys exterior dimensions of 128mm x 97mm x 79mm (5.0" x 3.8" x 3.1") along with a weight of 560 grams (1.23 lbs) and the Sony A57 has specifications of 132mm x 98mm x 81mm (5.2" x 3.9" x 3.2") with a weight of 618 grams (1.36 lbs).
Take a look at the Nikon D5100 and Sony A57 in our completely new Camera plus Lens Size Comparison Tool.
Keep in mind, the weight of an ILC will vary depending on the lens you are employing during that time. The following is the front view dimension comparison of the D5100 versus the A57.
Taking into consideration dimensions and weight, the portability score of the D5100 and A57 is 66 and 64 respectively.
Nikon D5100 vs Sony A57 Sensor Comparison
Normally, its tough to imagine the difference in sensor sizing purely by looking through technical specs. The graphic here might offer you a better sense of the sensor dimensions in the D5100 and A57.
As you can tell, each of the cameras have got the exact same sensor measurements and the same MP so you can expect comparable quality of images though you need to consider the age of the cameras into account. The older D5100 will be behind when it comes to sensor tech.
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Nikon D5100 vs Sony A57 Specifications
| Nikon D5100 | Sony SLT-A57 | |
|---|---|---|
| General Information | ||
| Make | Nikon | Sony |
| Model | Nikon D5100 | Sony SLT-A57 |
| Class | Entry-Level DSLR | Entry-Level DSLR |
| Released | 2011-04-26 | 2012-09-13 |
| Physical type | Compact SLR | Compact SLR |
| Sensor Information | ||
| Processor Chip | Expeed 2 | - |
| Sensor type | CMOS | CMOS |
| Sensor size | APS-C | APS-C |
| Sensor dimensions | 23.6 x 15.7mm | 23.5 x 15.6mm |
| Sensor area | 370.5mm² | 366.6mm² |
| Sensor resolution | 16MP | 16MP |
| Anti aliasing filter | ||
| Aspect ratio | 3:2 | 3:2 and 16:9 |
| Full resolution | 4928 x 3264 | 4912 x 3264 |
| Max native ISO | 6400 | 16000 |
| Max boosted ISO | 25600 | 25600 |
| Minimum native ISO | 100 | 100 |
| RAW files | ||
| Autofocusing | ||
| Manual focus | ||
| AF touch | ||
| Continuous AF | ||
| Single AF | ||
| AF tracking | ||
| Selective AF | ||
| AF center weighted | ||
| AF multi area | ||
| AF live view | ||
| Face detection focusing | ||
| Contract detection focusing | ||
| Phase detection focusing | ||
| Number of focus points | 11 | 15 |
| Cross focus points | 1 | 3 |
| Lens | ||
| Lens mounting type | Nikon F | Sony/Minolta Alpha |
| Total lenses | 309 | 143 |
| Focal length multiplier | 1.5 | 1.5 |
| Screen | ||
| Screen type | Fully Articulated | Fully Articulated |
| Screen size | 3 inch | 3 inch |
| Resolution of screen | 921 thousand dots | 921 thousand dots |
| Selfie friendly | ||
| Liveview | ||
| Touch display | ||
| Screen technology | TFT LCD monitor | Xtra Fine TFT drive with TruBlack technology |
| Viewfinder Information | ||
| Viewfinder | Optical (pentamirror) | Electronic |
| Viewfinder resolution | - | 1,440 thousand dots |
| Viewfinder coverage | 95% | 100% |
| Viewfinder magnification | 0.52x | 0.7x |
| Features | ||
| Lowest shutter speed | 30 secs | 30 secs |
| Highest shutter speed | 1/4000 secs | 1/4000 secs |
| Continuous shooting rate | 4.0fps | 12.0fps |
| Shutter priority | ||
| Aperture priority | ||
| Manual mode | ||
| Exposure compensation | Yes | Yes |
| Change WB | ||
| Image stabilization | ||
| Built-in flash | ||
| Flash range | 12.00 m (at ISO 100) | 10.00 m (@ ISO 100) |
| Flash settings | Auto, On, Off, Red-eye, Slow sync, Rear curtain | Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless |
| External flash | ||
| AEB | ||
| White balance bracketing | ||
| Highest flash synchronize | 1/200 secs | 1/160 secs |
| Exposure | ||
| Multisegment | ||
| Average | ||
| Spot | ||
| Partial | ||
| AF area | ||
| Center weighted | ||
| Video features | ||
| Video resolutions | 1920 x 1080 (30, 25, 24 fps), 1280 x 720 (30, 25, 24 fps), 640 x 424 (30, 25 fps) | 1920 x 1080 (60p, 24p), 1440 x 1080 (30p), 640 x 480 (30 fps) |
| Max video resolution | 1920x1080 | 1920x1080 |
| Video format | MPEG-4 | MPEG-4, AVCHD, H.264 |
| Mic port | ||
| Headphone port | ||
| Connectivity | ||
| Wireless | Eye-Fi Connected | Eye-Fi Connected |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 2.0 (480 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
| GPS | Optional | None |
| Physical | ||
| Environmental sealing | ||
| Water proof | ||
| Dust proof | ||
| Shock proof | ||
| Crush proof | ||
| Freeze proof | ||
| Weight | 560 gr (1.23 lb) | 618 gr (1.36 lb) |
| Dimensions | 128 x 97 x 79mm (5.0" x 3.8" x 3.1") | 132 x 98 x 81mm (5.2" x 3.9" x 3.2") |
| DXO scores | ||
| DXO All around score | 80 | 75 |
| DXO Color Depth score | 23.5 | 23.4 |
| DXO Dynamic range score | 13.6 | 13.0 |
| DXO Low light score | 1183 | 785 |
| Other | ||
| Battery life | 660 photos | 550 photos |
| Type of battery | Battery Pack | Battery Pack |
| Battery model | EN-EL14 | NP-FM500H |
| Self timer | Yes (2, 5, 10 or 20 sec) | Yes (2 or 10 sec) |
| Time lapse recording | ||
| Type of storage | SD/SDHC/SDXC | SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo |
| Card slots | One | One |
| Launch pricing | $0 | $1,000 |