Sony Alpha SLT-A99 vs Sony Alpha SLT-A55

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      Specifications

      General Sony Alpha SLT-A99 Sony Alpha SLT-A55
      BrandSonySony
      ModelAlpha SLT-A99Alpha SLT-A55
      Predecessor ModelSony Alpha DSLR-A900
      Successor ModelSony Alpha SLT-A99 II Sony Alpha SLT-A57
      MSRP$2,800/£2,480 body only
      Camera TypeInterchangeable LensInterchangeable Lens
      Body TypeSLTSLT
      Video Capture
      Sensor Sony Alpha SLT-A99 Sony Alpha SLT-A55
      Sensor TypeCMOSCMOS
      Sensor SizeFull FrameAPS-C
      Sensor Dimensions35.8 x 23.8 mm23.5 x 15.6 mm
      Total Pixels24.7 Megapixel16.7 Megapixel
      Effective Pixels24.3 Megapixel16.2 Megapixel
      Low Pass Filter
      Native ISO Range100 - 25,600100 - 12,800
      Boosted ISO Range100 - 25,600
      Photo Sony Alpha SLT-A99 Sony Alpha SLT-A55
      ProcessorBIONZBIONZ
      Max Image Resolution6000 x 40004912 x 3264
      Other Resolutions6000 x 3376, 3936 x 2624, 3936 x 2216, 2640 x 1760, 2640 x 14883568 x 2368, 3568 x 2368, 2448 x 1624, 2448 x 1376
      Image Aspect Ratios3:2, 16:93:2, 16:9
      Image File FormatJPEG, RAW
      JPEG Quality LevelsExtra Fine, Fine, StandardFine, Normal
      Bit Depth14-Bit
      Color SpacesRGB, Adobe RGBsRGB, Adobe RGB
      Timelapse Recording
      WB Bracketing 3 frames, H/L selectableLo 10 mired or Hi 20 mired
      Focus Sony Alpha SLT-A99 Sony Alpha SLT-A55
      Autofocus ModesMulti-area
      Selective single-point
      Tracking
      Single
      Continuous
      Face Detection
      Live View      		Multi-area
      Selective single-point
      Single
      Continuous
      Face Detection
      Live View
      Lens ServoContinuous-Servo AF, Manual Focus, Single-Servo AFSingle-Servo AF, Continuous-Servo AF
      Number of Focus Points1915
      Number of Cross-type Focus Points113
      Touch-to-Focus
      Live View Autofocus
      Animal Eye Detection
      Vehicle Tracking Mode
      Insect Tracking Mode
      Contrast Detection for Autofocus
      Phase Detection for Autofocus
      Optics Sony Alpha SLT-A99 Sony Alpha SLT-A55
      Lens MountSony ASony A
      Crop Factor1x1.5x
      Image StabilizationSensor ShiftSensor Shift
      Digital Image Stabilization
      Screen Sony Alpha SLT-A99 Sony Alpha SLT-A55
      Screen TypeFully ArticulatedFully Articulated
      Screen TechnologyTFT Xtra Fine color LCD
      Touch Screen
      Tilt&Flip Screen
      Selfie & Vlogger Friendly LCD Screen
      Screen Size3.0"3.0"
      Screen Resolution1,229k dot921k dot
      Top LCD Screen
      Live View
      Live Composition
      Viewfinder Sony Alpha SLT-A99 Sony Alpha SLT-A55
      ViewfinderElectronicElectronic
      Viewfinder Coverage100%100%
      Viewfinder Magnification0.71x1.10x
      Viewfinder Magnification (35mm equivalent)0.71x0.73x
      Viewfinder Resolution2,359k dot1,150k dot
      Diopter Adjustment-4 to +3-4 to +4
      Shutter Sony Alpha SLT-A99 Sony Alpha SLT-A55
      Shutter TypeElectronically controlled Vertical-traverse Focal-planeElectronically controlled Vertical-traverse Focal-plane
      Min Shutter Speed30 sec30 sec
      Max Shutter Speed (Mechanical or 1st Curtain)1/8000 sec1/4000 sec
      Max Continuous Shooting6.0 fps10.0 fps
      Flash Sony Alpha SLT-A99 Sony Alpha SLT-A55
      Built-in Flash
      Flash ModesAuto
      On
      Off
      Red-Eye
      Slow Sync
      High Speed Sync
      Rear Curtain
      Fill-in
      Wireless      		Auto
      On
      Off
      Red-Eye
      Slow Sync
      High Speed Sync
      Rear Curtain
      Fill-in
      Wireless
      Flash Range10.00 m (@ ISO 100)
      Max Flash Sync Speed1/250 sec1/160 sec
      Flash Bracketing3 exposures in 0.3/0.7 EV steps
      External Flash Connectivity
      External Flash ConnectionHot Shoe
      Exposure Sony Alpha SLT-A99 Sony Alpha SLT-A55
      Exposure Metering ModesMulti
      Center-weighted
      Spot      		Multi
      Center-weighted
      Spot
      Exposure Compensation±5 EV (1/3 EV, 1/2 EV increments)±2 EV (1/3 EV increments)
      Exposure Bracketing (3, 5 shots at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV increments) (3 shots at 1/3 EV, 2/3 EV increments)
      Exposure Lock with AE lock button (AE also locked when focus is locked in a multi-segment metering mode). (AE Lock button)
      DXO Sony Alpha SLT-A99 Sony Alpha SLT-A55
      DxO Low Light ISO1555816
      DxO Color Depth25.023.0
      DxO Dynamic Range14.012.4
      DxO Overall Score8973
      Video Sony Alpha SLT-A99 Sony Alpha SLT-A55
      Video FormatsMPEG-4, AVCHD, H.264MPEG-4, AVCHD, H.264
      Max Video Resolution1920 x 10801920 x 1080
      Unlimited Video Recording
      Recording Limit30 min30 min
      Terminals Sony Alpha SLT-A99 Sony Alpha SLT-A55
      USB SpeedUSB 2.0 (480 Mbit/sec)USB 2.0 (480 Mbit/sec)
      HDMI Output Mini Type C Mini Type C
      SpeakerMono
      Built-in MicrophoneStereoStereo
      Microphone Input
      Headphone Output
      Flash Sync Port
      Connectivity Sony Alpha SLT-A99 Sony Alpha SLT-A55
      Built-in GPS
      Built-In Wi-Fi Eye-Fi is possible
      Built-In Bluetooth
      Remote Control Wired or Wireless (Optional) Optional
      Environmental Sony Alpha SLT-A99 Sony Alpha SLT-A55
      Environmental Sealing
      Physical Sony Alpha SLT-A99 Sony Alpha SLT-A55
      Dimensions147 x 111 x 78 mm (5.79 x 4.37 x 3.07")124 x 92 x 85 mm (4.88 x 3.62 x 3.35")
      Weight (inc. batteries)812 g (1.79 lb / 28.64 oz)500 g (1.10 lb / 17.64 oz)
      Box Dimensions (LxWxH)10.7 x 6.9 x 6"
      Package Weight3.4 lb
      Power and Storage Sony Alpha SLT-A99 Sony Alpha SLT-A55
      Battery PackNP-FM500HNP-FW50
      Battery Life500 shots380 shots
      Internal Storage
      External StorageSingle Slot: SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG DuoSingle Slot: SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
      Other Sony Alpha SLT-A99 Sony Alpha SLT-A55
      Self Timer 2 or 10 sec 2 or 10 sec
      Orientation Sensor
      Material of ConstructionMagnesium Alloy


      For a full review please go to the review page:

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