Sony Alpha 57

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Sony α57
Sony SLT-A57 with SAL35F18.JPG
Type: SLT camera (single-lens translucent)
Lens connection : Sony Minolta A bayonet
Image sensor : CMOS
Sensor size: APS-C (23.5 mm × 15.6 mm)
Resolution : 16.2 megapixels
Image size: 4,912 × 3,264 pixels
File formats : JPEG , RAW
Exposure index : 100 to 16,000 with intervals of a whole exposure level
Viewfinder : Electronic viewfinder
Field of view : 100%
Enlargement: 1.04 times
Screen : rotating and swiveling LCD
Size: 7.5 cm (3.0 in)
Resolution: 640 × 480 pixels (307,200 pixels), 288 ppi
Operating modes: Single image, series shots, self-timer , swivel panoramas, video recordings
Frame rate : Max. 12 frames / s
Auto focus (AF) : TTL
AF points: 15 points (3-point crosshair type)
AF modes: Single AF, Auto AF, Continuous AF, Manual Focus
Shutter speed : 30-1 / 4000 s and Bulb
Lightning : auto pop-up flash
Guide number : 10 at ISO 100
Flash control: TTL flash metering
Color space : sRGB , Adobe RGB
White balance : automatically or manually
Storage media : SD / SDHC / SDXC / MemoryStick Pro Duo
Data interface : USB 2.0 Hi-Speed
Video interface: HDMI (Type C)
Power supply: NP-FM500H lithium-ion battery
Dimensions: 132.1 x 97.5 x 80.7 mm³
Weight: approx. 539 g

The Sony α57 ( SLT-A57V , SLT-A57 ) is a mid -range camera that has been available in German stores since April 2012. It is the successor to the Sony α55 and, like this one, has a partially transparent mirror. Sony calls this design “ single-lens translucent camera ”, or SLT camera for short . As an SLT, it offers phase comparison autofocus in live view and an electronic viewfinder . In contrast to the previous model, however, it does not have a built-in GPS module.

By using the partially transparent mirror instead of the otherwise usual folding mirror, which has to be folded up for the recording , it is possible to take up to twelve images per second with constant refocusing . Up to now, this speed has only been reserved for much more expensive cameras, if at all. This also makes it possible to focus in live view mode at the same speed as with the viewfinder. As usual with Sony, the α57 has a built-in image stabilizer for the 16.2 megapixel sensor.

The Sony α57 is available in the following versions:

  • SLT-A57 (camera without lens )
  • SLT-A57K (camera with 18–55 mm / 3.5-5.6 Sony lens )
  • SLT-A57M (camera with 18–135 mm / 3.5-5.6 Sony lens )
  • SLT-A57Y (camera with 18–55 mm / 3.5-5.6 and 55–200 mm / 4-5.6 Sony lens )

Web links

Individual evidence

  1. ↑ Sony (along with other manufacturers) counts the subpixels of each pixel, i.e. H. the red, green and blue channels of each pixel individually, and therefore specifies the rear display with 307,200 [pixels] × 3 [color channels] = 921,600 pixels.
  2. ↑ Instructions for use for SLT-A57 dated May 21, 2012, p. 83DE ( PDF file; 15.45 MB ). Sony Germany website. Retrieved August 21, 2012.
  3. ^ Sony Germany