Sony Alpha SLT-A99 vs Sony Alpha SLT-A77 II

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      Specifications

      General Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      BrandSonySony
      ModelAlpha SLT-A99Alpha SLT-A77 II
      Predecessor ModelSony Alpha DSLR-A900 Sony Alpha SLT-A77
      Successor ModelSony Alpha SLT-A99 II
      MSRP$2,800/£2,480 body only$1199 (body only), $1799 (w/16-50 F2.8 lens)
      Camera TypeInterchangeable LensInterchangeable Lens
      Body TypeSLTSLT
      Video Capture
      Sensor Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      Sensor TypeCMOSCMOS
      Sensor SizeFull FrameAPS-C
      Sensor Dimensions35.8 x 23.8 mm23.5 x 15.6 mm
      Total Pixels24.7 Megapixel24.7 Megapixel
      Effective Pixels24.3 Megapixel24.3 Megapixel
      Low Pass Filter
      Native ISO Range100 - 25,60050 - 25,600
      Photo Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      ProcessorBIONZBIONZ X
      Max Image Resolution6000 x 40006000 x 4000
      Other Resolutions6000 x 3376, 3936 x 2624, 3936 x 2216, 2640 x 1760, 2640 x 14886000 x 3376, 4240 x 2832, 4440 x 2400, 3008 x 2000, x 3008 x 1688
      Image Aspect Ratios3:2, 16:93:2, 16:9
      Image File FormatJPEG, RAWJPEG, RAW
      JPEG Quality LevelsExtra Fine, Fine, StandardSuper fine, fine, normal
      Bit Depth14-Bit14-Bit
      Color SpacesRGB, Adobe RGB
      Timelapse Recording
      WB Bracketing 3 frames, H/L selectable3 shots, low/high selectable
      Focus Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      Autofocus ModesMulti-area
      Selective single-point
      Tracking
      Single
      Continuous
      Face Detection
      Live View      		Multi-area
      Center
      Selective single-point
      Tracking
      Single
      Continuous
      Face Detection
      Live View
      Lens ServoContinuous-Servo AF, Manual Focus, Single-Servo AFAutomatic, Continuous-Servo AF, Direct Manual Focus, Single-Servo AF
      AF Detection Range-2 to +18 EV
      Number of Focus Points1979
      Number of Cross-type Focus Points1115
      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-A77 II
      Lens MountSony ASony A
      Crop Factor1x1.5x
      Image StabilizationSensor ShiftSensor Shift
      Digital Image Stabilization
      Screen Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      Screen TypeFully ArticulatedFully Articulated
      Screen TechnologyTFT Xtra Fine color LCDWhiteMagic TFT
      Touch Screen
      Tilt&Flip Screen
      Selfie & Vlogger Friendly LCD Screen
      Screen Size3.0"3.0"
      Screen Resolution1,229k dot1,229k dot
      Top LCD Screen
      Live View
      Live Composition
      Viewfinder Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      ViewfinderElectronicElectronic
      Viewfinder Coverage100%100%
      Viewfinder Magnification0.71x1.09x
      Viewfinder Magnification (35mm equivalent)0.71x0.73x
      Viewfinder Resolution2,359k dot2,359k dot
      Viewfinder Eyepoint27 mm
      Diopter Adjustment-4 to +3-4 to +3
      Shutter Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      Shutter TypeElectronically controlled Vertical-traverse Focal-plane
      Min Shutter Speed30 sec30 sec
      Max Shutter Speed (Mechanical or 1st Curtain)1/8000 sec1/8000 sec
      Max Continuous Shooting6.0 fps12.0 fps
      Flash Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      Built-in Flash
      Flash ModesAuto
      On
      Off
      Red-Eye
      Slow Sync
      High Speed Sync
      Rear Curtain
      Fill-in
      Wireless      		Auto
      fill
      rear sync
      slow sync
      Flash Range12.00 m at ISO 100
      Max Flash Sync Speed1/250 sec1/250 sec
      Flash Compensation-3 to +3 EV (1/3, 1/2 EV Steps)
      External Flash Connectivity
      External Flash SystemTTL
      External Flash ConnectionHot ShoeHot Shoe, PC Terminal, Proprietary, Wireless
      Exposure Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      Exposure Metering ModesMulti
      Center-weighted
      Spot      		Multi
      Center-weighted
      Spot
      Exposure ModesAperture Priority, Auto, Manual, Program, Shutter Priority
      Metering Range-2 to +17 EV
      Exposure Compensation±5 EV (1/3 EV, 1/2 EV increments)±5 EV (1/3 EV, 1/2 EV increments)
      Exposure Bracketing (3, 5 shots at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV increments) ±3 EV (3, 5 shots at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV increments)
      Exposure Lock with AE lock button (AE also locked when focus is locked in a multi-segment metering mode).AE is also locked when focus is locked in multi-segment metering mode. ("AEL w/ shutter"(Auto/On/Off) is supported) Available with AE lock button
      DXO Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      DxO Low Light ISO15551013
      DxO Color Depth25.024.4
      DxO Dynamic Range14.013.4
      DxO Overall Score8982
      Video Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      Video FormatsMPEG-4, AVCHD, H.264MPEG-4, AVCHD, XAVC S
      Max Video Resolution1920 x 10801920 x 1080
      Webcam Functionality
      Unlimited Video Recording
      Recording Limit30 min30 min
      Terminals Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      USB SpeedUSB 2.0 (480 Mbit/sec)USB 2.0 (480 Mbit/sec)
      HDMI Output Mini Type C Mini
      SpeakerMonoMono
      Built-in MicrophoneStereoStereo
      Microphone Input
      Headphone Output
      Flash Sync Port
      Connectivity Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      Built-in GPS
      Built-In Wi-Fi
      Wi-Fi Version802.11b/g/n, 2.4 GHz
      Built-In Bluetooth
      NFC
      Remote Control Wired or Wireless (Optional) via RMT-DSLR2 (Optional)
      Environmental Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      Environmental Sealing
      Physical Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      Dimensions147 x 111 x 78 mm (5.79 x 4.37 x 3.07")143 x 104 x 81 mm (5.63 x 4.09 x 3.19")
      Weight (inc. batteries)812 g (1.79 lb / 28.64 oz)647 g (1.43 lb / 22.82 oz)
      Box Dimensions (LxWxH)10.7 x 6.9 x 6"7.65 x 6.85 x 6.25"
      Package Weight3.4 lb2.83 lb
      Power and Storage Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      Battery PackNP-FM500HNP-FM500H
      Battery Life500 shots480 shots
      Internal Storage
      External StorageSingle Slot: SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG DuoSingle Slot: SD/SDHC/SDXC/Memory Stick Duo Hybrid (UHS-I)
      Other Sony Alpha SLT-A99 Sony Alpha SLT-A77 II
      Self Timer 2 or 10 sec 2 or 12 sec
      Orientation Sensor
      Material of ConstructionMagnesium AlloyMagnesium Alloy


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