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Sony Alpha a57 review

The sharp-shooting DSLT that clocks up 12fps

As part of our image quality testing for the Sony Alpha 57, we've shot our resolution chart with a Sigma 50mm f/1.4 EX DG HSM lens mounted.

If you view our crops of the resolution chart's central section at 100% (or Actual Pixels) you will see that, for example, at ISO 100 the Sony Alpha 57 is capable of resolving up to around 24 (line widths per picture height x100) in its highest quality JPEG files.

For a full explanation of what our resolution charts mean, and how to read them, check out our full explanation of our camera testing resolution charts.

Examining images of the chart taken at each sensitivity setting reveals the following resolution scores in line widths per picture height x100:

Sony Alpha 57 review  resolution ISO 100

Sony Alpha 57 review  resolution ISO 100

ISO 100, score: 24 (click here to see the full resolution image)

Sony Alpha 57 review  resolution ISO 200

ISO 200, score: 22 (click here to see the full resolution image)

Sony Alpha 57 review  resolution ISO 400

ISO 400, score: 22 (click here to see the full resolution image)

Sony Alpha 57 review  resolution ISO 800

ISO 800, score: 22 (click here to see the full resolution image)

Sony Alpha 57 review  resolution ISO 1600

ISO 1600, score: 22 (click here to see the full resolution image)

Sony Alpha 57 review  resolution ISO 3200

ISO 3200, score: 22 (click here to see the full resolution image)

Sony Alpha 57 review  resolution ISO 6400

ISO 6400, score: 20 (click here to see the full resolution image)

Sony Alpha 57 review  resolution ISO 12800

ISO 12800, score: 18 (click here to see the full resolution image)

Sony Alpha 57 review  resolution ISO 16000

ISO 16000, score: 18 (click here to see the full resolution image)

Raw images

Sony Alpha 57 review  resolution ISO 100

ISO 100, score: 24 (click here to see the full resolution image)

Sony Alpha 57 review  resolution ISO 200

ISO 200, score: 24 (click here to see the full resolution image)

Sony Alpha 57 review  resolution ISO 400

ISO 400, score: 22 (click here to see the full resolution image)

Sony Alpha 57 review  resolution ISO 800

ISO 800, score: 22 (click here to see the full resolution image)

Sony Alpha 57 review  resolution ISO 1600

ISO 1600, score: 22 (click here to see the full resolution image)

Sony Alpha 57 review  resolution ISO 3200

ISO 3200, score: 22 (click here to see the full resolution image)

Sony Alpha 57 review  resolution ISO 6400

ISO 6400, score: 22 (click here to see the full resolution image)

Sony Alpha 57 review  resolution ISO 12800

ISO 12800, score: 18 (click here to see the full resolution image)

Sony Alpha 57 review  resolution ISO 16000

ISO 16000, score: 18 (click here to see the full resolution image)

Tech Specs

Product TypeDigital SLT Camera
Battery Size SupportedProprietary Battery Size
Maximum Video Resolution1920 x 1080
TouchscreenNo
Effective Camera Resolution16.1 Megapixel
GPSNo
USBYes
PictBridgeNo
Product Familyalpha A
Image StabilizationOptical
Optical Zoom3.1x, 3.1x (Lens 1) - 3.6x (Lens 2)
Digital ZoomNo
Brand NameSony
FeaturesLive View, Self-timer, Face Detection, Face Recognition, Smile Detection, Continuous Shooting Mode, 3D Panorama
Screen Size7.6 cm (3")
Video FormatsAVCHD, MPEG-4 AVC
Viewfinder TypeElectronic
Weight (Approximate)539 g
Maximum Image Resolution4912 x 3264
Maximum Frame Rate60 fps
Number of Batteries Supported1
Battery Built-inNo
Battery RechargeableYes
Battery IncludedYes
Display Screen TypeLCD
Image Sensor TypeCMOS
Total Camera Resolution16.7 Megapixel
HDMIYes
Camera AssemblyBody with Lens Kit
HD Movie ModeYes
Battery Model SupportedNP-FM500H
Memory Card SupportedMemory Stick PRO Duo, Memory Stick PRO-HG Duo, Secure Digital (SD) Card, Secure Digital High Capacity (SDHC) Card, Secure Digital Extended Capacity (SDXC), Eye-Fi Card
Height97.5 mm
Width132.1 mm
Depth80.7 mm
Autofocus Points15
Product SeriesA
Focal Length18 mm to 55 mm (Lens 1) - 55 mm to 200 mm (Lens 2)
Image FormatsJPEG, MPO, RAW
Audio FormatsAC3, AAC
Flash ModesAuto Flash, Fill Flash, Slow Sync, Red-eye Reduction, Flash Exposure Compensation, Rear Flash Sync, High Speed Sync
Focus ModesAuto, Manual
ManufacturerSony Corporation
Product ModelSLT-A57
Product NameA57 Translucent Mirror Interchangeable Lens Camera
Product Linealpha
Aspect Ratio16:9
Manufacturer Part NumberSLTA57Y.CEH
Manufacturer Website Addresshttp://www.sony.co.uk
Marketing InformationSpeedy shooting plus limitless creative options

Serious quality and powerful creative options have never been so accessible. The SLT-A57 shares many features found in range-topping cameras from Sony, including super-fast shooting with continuous autofocus. Explore the possibilities of flawless images and Full HD video.

Battery Life590 Shot
Package Contents
  • A57 Translucent Mirror Interchangeable Lens Camera
  • SAL-1855 Lens
  • SAL-55200 Lens
  • NP-FM500H Battery
  • Software Media
Display Resolution921600 Pixel
Limited Warranty1 Year
Built-in DevicesMicrophone, Speaker