Sony Alpha 55

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Sony α55
Sony SLT-A55 02s5.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 12,800 with intervals of one entire exposure level, a maximum of 25,600 in multi-image noise reduction mode
Viewfinder : Electronic viewfinder
Field of view : 100%
Enlargement: 1.1 compartment
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. 10 frames / s in shutter speed priority mode, max. 6 fps in continuous shooting mode
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-out 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-FW50 lithium-ion battery
Dimensions: 124 x 92 x 85 mm³
Weight: about 441 grams
Additions: Integrated GPS

The Sony α55 ( SLT-A55V , SLT-A55 ) is a mid -range camera that has been available in stores since August 2010. It is the first digital camera (besides the Sony α33 ) with 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 . The successor is the Sony α57 .

A-mount, APS-C CMOS
Sony Alpha 55 with Minolta AF 70-210mm f / 4 "stove pipe"

By using the partially transparent mirror instead of the usual folding mirror, which has to be folded up for the recording , it is possible to take up to ten images per second with constant refocusing . Up to now, this speed has only been reserved for much more expensive cameras, if at all. At the same time, it is one of the first four Sony Alpha cameras with a built-in video recording function (maximum 1920 × 1080 pixels). As usual with Sony, the α55 has a built-in image stabilizer for the 16.2 megapixel sensor.

The Sony α55 is available on the market in the following versions:

  • SLT-A55 (no GPS , only outside of Europe)
  • SLT-A55V (camera without lens with GPS )
  • SLT-A55VL (camera with 18–55mm 3.5 / 5.6 Sony lens and GPS)
  • SLT-A55VY (camera with 18–55mm 3.5 / 5.6 and 55–200mm 4 / 5.6 Sony lens and GPS)

Maximum continuous video recording time:

Model name Ambient temperature Image stabilization
On Out
α55 (SLT-A55V) 20 ° C ≈ 9 minutes ≈ 29 minutes
30 ° C ≈ 6 minutes ≈ 13 minutes
α33 (SLT-A33) 20 ° C ≈ 11 minutes ≈ 29 minutes
30 ° C ≈ 7 minutes ≈ 22 minutes

Web links

Commons : Sony Alpha 55  - collection of pictures, videos and audio files

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. ↑ Operating instructions for SLT-A33 / SLT-A55 / SLT-A55V from November 29, 2010, p. 183DE ( PDF file; 24.5 MB ). Sony Germany website. Retrieved July 13, 2011.
  3. ^ Sony Germany