Sony Alpha a57 review

The sharp-shooting DSLT that clocks up 12fps

TODO alt text

We shoot a specially designed chart in carefully controlled conditions and the resulting images are analysed using DXO Analyzer software to generate the data to produce the graphs below.

A high signal to noise ratio (SNR) indicates a cleaner and better quality image.

For more more details on how to interpret our test data, check out our full explanation of our noise and dynamic range tests.

Sony Alpha 57 review Signal to noise ratio

JPEG images from the Sony Alpha 57 shows good signal to noise ratio results across the sensitivity range. At all sensitivities the results between the cameras are close with the Nikon D5100 and Canon 600D just beating the a57 at ISO 100, however at all other sensitivities the a57 has the edge.

Raw images

Sony Alpha 57 review TIFF signal to noise ratio

TIFF images (After conversion from raw) show that whilst the Nikon D5100 beats the at a sensitivity of ISO 100 at all other sensitivities the show better signal to noise ratio results. This chart shows that noise only becomes really apparent in images from ISO 12800.

Dynamic range

Sony Alpha 57 review JPEG dynamic range

This chart shows the Alpha 57 has consistent dynamic range results between sensitivities of ISO 100-1600 beating the Canon 600D, Nikon D5100 and improving on the performance of the Alpha 65.

Sony Alpha 57 review TIFF dynamic range

This chart shows that the Sony Alpha 57's TIFF files (After conversion from raw) have a high dynamic range between sensitivities of ISO 100 and 1600, and across the rest of the sensitivity range beat the comparison cameras. This show that at all sensitivities the a57 is able to capture a good tonal graduation in both the shadows and highlights.

Tech Specs

Product TypeDigital SLT Camera with Lens
Battery Size SupportedProprietary Battery Size
Maximum Video Resolution1920 x 1080
Effective Camera Resolution16.1 Megapixel
Product Familyalpha A
HD Movie ModeYes
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
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
Image Sensor Size23.50 mm x 15.60 mm
Maximum Image Resolution4912 x 3264
Display Screen TypeLCD
Height97.5 mm
Width132.1 mm
Depth80.7 mm
Product SeriesA
Focal Length18 mm to 55 mm (Lens 1) - 55 mm to 200 mm (Lens 2)
Image FormatsJPEG, MPO, RAW
External FlashOptional
Focus ModesAuto, Manual
ManufacturerSony Corporation
Product ModelSLT-A57
Product NameA57 Translucent Mirror Interchangeable Lens Camera
Product Linealpha
Exposure Control
  • Program AE
  • Aperture Priority AE
  • Shutter Priority AE
  • Manual
Aspect Ratio16:9
Manufacturer Part NumberSLTA57Y.CEH
Manufacturer Website Address
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.

Package Contents
  • A57 Translucent Mirror Interchangeable Lens Camera
  • SAL-1855 Lens
  • SAL-55200 Lens
  • NP-FM500H Battery
  • Software Media
Limited Warranty1 Year