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Sony a7R III vs Sony a9

    5.0 in
    3.76 in
    Sony a7R III Digital Camera
    Sony a7R III
      5.0 in
      3.76 in
      Sony a9 Digital Camera
      Sony a9
      Available colors
      Editiorial reviews
      76
      4.7 out of 5
      24 user ratings
      5 stars
      		87 %
      4 stars
      		12 %
      3 stars
      		0 %
      2 stars
      		0 %
      1 stars
      		0 %
      Read editorial reviews
      68
      4.7 out of 5
      24 user ratings
      5 stars
      		83 %
      4 stars
      		16 %
      3 stars
      		0 %
      2 stars
      		0 %
      1 stars
      		0 %
      Read editorial reviews
      User rating
      35
      3.9 out of 5
      35 user ratings
      5 stars
      		25 %
      4 stars
      		42 %
      3 stars
      		25 %
      2 stars
      		5 %
      1 stars
      		0 %
      38
      4.0 out of 5
      38 user ratings
      5 stars
      		34 %
      4 stars
      		34 %
      3 stars
      		28 %
      2 stars
      		2 %
      1 stars
      		0 %

      Video Comparisons (1)

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      Full Comparison

      Units:

      Sensor

      Sony a7R IIISony a7R III
      Sony a9Sony a9
      Sensor typeExmor R CMOSCMOS
      Image sensor format
      Advanced Photo System type-C
      Advanced Photo System type-C
      Sensor size1.41 in1.41 in
      Effective pixels42.4 Mpx24.0 Mpx
      Max resolution7952 x 5304 px6000 x 4000 px
      ProcessorBIONZ XBIONZ X

      Image

      Sony a7R IIISony a7R III
      Sony a9Sony a9
      ISO
      • 50
      • 100
      • 200
      • 400
      • 800
      • 1600
      • 3200
      • 6400
      • 12800
      • 25600
      • 51200
      • 102400
      • 100
      • 25600
      ISO minimum50100
      ISO maximum10240025600
      Maximum image resolution7952 x 5304 px6000 x 4000 px
      White balance modes
      • Auto
      • Cloudy
      • Daylight
      • Flash
      • Fluorescent
      • Incandescent
      • Shade
      • Underwater
      • Auto
      • Cloudy
      • Custom modes
      • Daylight
      • Fluorescent
      • Incandescent
      • Shade
      Supported image file formats
      • JPG
      • RAW
      • JPEG
      • RAW
      Photo effects
      • Sepia
      • Vivid
      • Black&White
      • Neutral
      • Sepia
      • Vivid
      Supported aspect ratios
      • 3:2
      • 16:9
      • 3:2
      • 16:9
      HDRyesno
      AEB/HDR supportyesyes

      Optics and focus

      Sony a7R IIISony a7R III
      Sony a9Sony a9
      Lens mountSony E
      • Sony FE
      • Canon EF
      • Sony E
      Magnification (Crop factor)1.0 x1.0 x
      AF assist (auto-focus assist light)LampLamp
      Focus adjustmentAuto/ManualAuto/Manual
      Contrast autofocusyesyes
      Contrast adjustmentyesyes
      Brightness adjustmentyesyes
      Autofocus in recording modeyesyes
      Autofocus
      • Face detection
      • Single Auto Focus
      		Only lenses with AF-motor
      Auto Focus (AF) lockyesyes
      Max number of AF points (incl. assistant)399693
      Image stabiliserBuilt-inBuilt-in
      Phase detection autofocusyesyes
      Number of AF points (contrast)42525

      Screen and viewfinder

      Sony a7R IIISony a7R III
      Sony a9Sony a9
      Screen size3.0 in3.0 in
      Articulated LCDyesyes
      Screen technologyLCD TFTLCD TFT
      Screen dots14400001440000
      Touch screenyesno
      Viewfinder
      • Electronic
      • Optical
      		Electronic
      Viewfinder screen size0.5 in0.5 in
      Viewfinder coverage100.0 %100.0 %
      Viewfinder magnification0.78 x0.78 x
      Separate info displaynono
      Flip-out screenyesno

      Photography features

      Sony a7R IIISony a7R III
      Sony a9Sony a9
      Shooting modes
      • Auto
      • Manual
      • Program
      • Auto
      • Manual
      • Program
      • Scene
      Camera shutter typeElectronic
      • Electronic
      • Mechanical
      Auto exposure lockyesyes
      Continuous shootingyesyes
      Self-timer delay
      • 2
      • 5
      • 10
      • 2
      • 5
      • 10
      Flash sync speed1/250s1/250s
      Flash modes
      • Fill-in
      • Forced OFF
      • High-speed Sync
      • Pre-flash
      • Redeye Reduction
      • Auto
      • Fill-in
      • Flash OFF
      • Flash ON
      • High-speed Sync
      • Pre-flash
      • Slow Sync
      External flash connection
      • Hot shoe
      • PC terminal
      		Hot shoe
      Scene modes
      • Sunset
      • Landscape
      • Landscape
      • Night
      • Portrait
      • Self-portrait
      • Sunset
      Self-timeryesyes
      Manual settingsyesyes
      Speed (JPEG)10.0 fps20.0 fps
      Speed (RAW)10.0 fps20.0 fps

      Videography features

      Sony a7R IIISony a7R III
      Sony a9Sony a9
      Maximum resolution3840 x 2160 px3840 x 2160 px
      Video recordingyesyes
      Recording resolutions
      • 3840 x 2160
      • 1920 x 1080
      • 1280 x 720
      • 1920 x 1080
      • 3840 x 2160
      HD type4K Ultra HD4K Ultra HD
      Supported video file formats
      • AVC
      • AVCHD
      • H.264
      • MPEG-4
      • XAVC S
      • AVC
      • AVCHD
      • M4V
      • XAVC-I
      Camera playbackSingle image
      • Movie
      • Single image
      Video recording limit115.0 min.195.0 min.
      Max resolution (highest frame rate)1920 x 10801920 x 1080
      Max frame rate (highest resolution)30.0 fps30.0 fps
      Max frame rate (regardless of res.)120.0 fps120.0 fps
      Motion JPEG frame rate100.0 fps60.0 fps

      Audio features

      Sony a7R IIISony a7R III
      Sony a9Sony a9
      Built-in microphoneyesyes
      Voice recordingyesyes
      Audio systemMonoStereo

      Design

      Sony a7R IIISony a7R III
      Sony a9Sony a9
      Body typeMILCMILC
      Body materialAluminum-magnesiumAluminum-magnesium
      Colour of productBlackBlack
      Anti-dust systemyesyes
      Environmentally sealedyesyes

      Dimensions

      Sony a7R IIISony a7R III
      Sony a9Sony a9
      Weight23.17 oz23.74 oz
      Width5.0 in5.0 in
      Height3.76 in3.76 in
      Depth2.9 in2.48 in

      Storage

      Sony a7R IIISony a7R III
      Sony a9Sony a9
      Compatible memory cards
      • MS Micro
      • Memory Stick
      • MicroSD
      • MicroSDHC
      • MicroSDXC
      • SD
      • SDHC
      • SDXC
      • MS Pro Duo
      • MS PRO Duo Mark 2
      • MS Pro-HG Duo
      • SD
      • SDHC
      • SDXC
      Memory slots22
      Storage types
      • Memory Stick Pro Duo
      • SDHC
      • SD
      • SDXC
      • Memory Stick Duo
      • Memory Stick Pro Duo
      • Memory Stick Pro
      • SDHC
      • SD
      • SDXC

      Power

      Sony a7R IIISony a7R III
      Sony a9Sony a9
      Power source typeBatteryBattery
      Battery life (CIPA)640650
      Battery technology
      Lithium-Ion
      Lithium-Ion
      Battery capacity2280.0 mAh2280.0 mAh
      Battery voltage7.2 V7.2 V

      Connectivity

      Sony a7R IIISony a7R III
      Sony a9Sony a9
      HDMIyesyes
      HDMI connector typeMicroMicro
      USB connector typeUSB Type-CMicro-USB
      USB version
      3.2 Gen 1
      		2.0
      Supported WiFi types
      • IEEE 802.11b
      • IEEE 802.11g
      • IEEE 802.11n
      • IEEE 802.11b
      • IEEE 802.11g
      • IEEE 802.11n
      NFCnoyes
      Wireless network (Wi-Fi)yesyes
      Bluetoothyesyes
      Bluetooth version4.14.1
      Firewirenono

      Other features

      Sony a7R IIISony a7R III
      Sony a9Sony a9
      GPSnono

      Pros & Cons

      Pros
          Cons

              Often compared with Sony a7R III

              Sony a7R III Digital Camera
              Nikon Z7
              Sonya7R III
              NikonZ7
              Sony a7R III Digital Camera
              Nikon Z6
              Sonya7R III
              NikonZ6
              Sony a7R III Digital Camera
              Fujifilm GFX 50R
              Sonya7R III
              FujifilmGFX 50R
              Sony a7R III Digital Camera
              Sony a7 III
              Sonya7R III
              Sonya7 III
              Sony a7R III Digital Camera
              Nikon D850
              Sonya7R III
              NikonD850
              Sony a7R III Digital Camera
              Sony a7R II
              Sonya7R III
              Sonya7R II

              Often compared with Sony a9

              Sony a9 Digital Camera
              Nikon D5
              Sonya9
              NikonD5
              Sony a9 Digital Camera
              Sony a7 III
              Sonya9
              Sonya7 III
              Sony a9 Digital Camera
              Nikon Z7
              Sonya9
              NikonZ7
              Sony a9 Digital Camera
              Nikon Z6
              Sonya9
              NikonZ6
              Sony a9 Digital Camera
              Nikon D850
              Sonya9
              NikonD850