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Sony Alpha A55 review

The first DSLR to use a translucent mirror is part of a new breed of digital cameras

As part of our review process we've implemented a new testing procedure. To test the Sony Alpha A55 image quality, we shot our resolution chart, each with the Sony 18-55mm f/3.5-5.6 DT SAM kit lens.

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 A55 is capable of resolving up to 26 (line widths per picture height x100) in its highest quality JPEG files. Examining images of the chart taken at each sensitivity setting reveals the following resolution scores in line widths per picture height x100:

Resolution chart

Sony A55 Review: 0.4secs at f/8, ISO 100

JPEGs

ISO 100

Sony A55 Review: ISO 100 – 26 (Click to view full size)

ISO 200

Sony A55 Review: ISO 200 – 26 (Click to view full size)

ISO 400

Sony A55 Review: ISO 400 – 26 (Click to view full size)

ISO 800

Sony A55 Review: ISO 800 – 24 (Click to view full size)

ISO 1600

Sony A55 Review: ISO 1600 – 22 (Click to view full size)

ISO 3200

Sony A55 Review: ISO 3200 – 20 (Click to view full size)

ISO 6400

Sony A55 Review: ISO 6400 – 18 (Click to view full size)

ISO 12800

Sony A55 Review: ISO 12,800 – 18 (Click to view full size)

Raw files

ISO 100 raw

Sony A55 Review: ISO 100 – 26 (Click to view full size)

ISO 200 raw

Sony A55 Review: ISO 200 – 26 (Click to view full size)

ISO 400 raw

Sony A55 Review: ISO 400 – 26 (Click to view full size)

ISO 800 raw

Sony A55 Review: ISO 800 – 24 (Click to view full size)

ISO 1600 raw

Sony A55 Review: ISO 1600 – 24 (Click to view full size)

ISO 3200 raw

Sony A55 Review: ISO 3200 – 22 (Click to view full size)

ISO 6400 raw

Sony A55 Review: ISO 6400 – 20 (Click to view full size)

ISO 12800 raw

Sony A55 Review: ISO 12,800 – 20 (Click to view full size)

Tech Specs

Product TypeDigital SLT Camera
Battery Size SupportedProprietary Battery Size
Maximum Video Resolution1920 x 1080
Effective Camera Resolution16.2 Megapixel
GPSYes
USBYes
HDMIYes
Wide AngleNo
PictBridgeNo
Product Familyalpha
HD Movie ModeYes
Memory Card SupportedSecure Digital (SD) Card, Secure Digital High Capacity (SDHC) Card, Secure Digital Extended Capacity (SDXC), Memory Stick PRO Duo, Memory Stick PRO-HG Duo
Optical Zoom3.1x, 3.1x (Lens 1) - 3.6x (Lens 2)
Brand NameSony
FeaturesFace Detection, Smile Detection, Manual White Balance, Aperture Priority, Live View, External Flash Shoe, Continuous Shooting Mode
Screen Size7.6 cm (3")
Video FormatsMP4
Viewfinder TypeElectronic
Weight (Approximate)441 g
Maximum Image Resolution4912 x 3264
Maximum Frame Rate25 fps
Number of Batteries Supported1
Battery Built-inNo
Battery RechargeableYes
Battery IncludedYes
Display Screen TypeLCD
Image Sensor TypeCMOS
Total Camera Resolution16.7 Megapixel
Camera AssemblyBody with Lens Kit
Height92 mm
Width124.4 mm
Depth84.7 mm
Autofocus Points15
Focal Length18 mm to 55 mm (Lens 1) - 55 mm to 200 mm (Lens 2)
Image FormatsJPEG, RAW
Audio FormatsAAC
Focus ModesAuto, Manual
ManufacturerSony Corporation
Product ModelSLT-A55
Product Namealpha SLT-A55 Digital SLT Camera
Product Linealpha
Manufacturer Part NumberSLTA55VY.CEH
Manufacturer Website Addresshttp://www.sony.co.uk
Marketing Information

Never miss another moment, however fleeting. Discover a new world of lightning-quick shooting responses and smooth, accurate autofocus tracking - even with moving objects. Capture beautiful videos in detail-packed Full HD. All in a light, compact camera that's easy to carry.

Battery Life380 Shot
Package Contents
  • alpha SLT-A55 Digital SLT Camera
  • NP-FW50 Battery
  • SAL-1855 Lens
  • SAL-55200-2 Lens
Display Resolution921600 Pixel
Limited Warranty1 Year