Sony Alpha 9 III vs Sony Alpha 7R IV

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      Specifications

      General Sony Alpha 9 III Sony Alpha 7R IV
      BrandSonySony
      ModelAlpha 9 IIIAlpha 7R IV
      Predecessor ModelSony Alpha 9 II Sony Alpha 7R III
      Successor ModelSony Alpha 7R V
      MSRP$5999.99$3500 (body only)
      Camera TypeInterchangeable LensInterchangeable Lens
      Body TypeMirrorlessMirrorless
      Video Capture
      Sensor Sony Alpha 9 III Sony Alpha 7R IV
      Sensor TypeStacked CMOSBSI-CMOS
      Sensor SizeFull FrameFull Frame
      Sensor Dimensions35.6 x 23.8 mm35.7 x 23.8 mm
      Total Pixels25.2 Megapixel62.5 Megapixel
      Effective Pixels24.6 Megapixel61.0 Megapixel
      Low Pass Filter
      Native ISO Range250 - 25,600100 - 32,000
      Boosted ISO Range125 - 51,20050 - 102,800
      Sensor Shift High Resolution Mode 4/16 shots
      Photo Sony Alpha 9 III Sony Alpha 7R IV
      ProcessorBIONZ XRBIONZ X
      Max Image Resolution6000 x 40009504 x 6336
      Other Resolutions3936 x 2632, 3008 x 2000
      Image Aspect Ratios1:1, 3:2, 16:91:1, 4:3, 3:2, 16:9
      Image File FormatRAW, HEIF, JPEGJPEG, RAW
      JPEG Quality LevelsExtra fine, fine, standard)
      Bit Depth14-Bit14-Bit
      Timelapse Recording
      White BalancePresets: Auto, Cloudy, Color Temperature, Custom, Daylight, Flash, Fluorescent (Cool White), Fluorescent (Day White), Fluorescent (Daylight), Fluorescent (Warm White), Incandescent, Shade, Underwater
      WB Bracketing
      Focus Sony Alpha 9 III Sony Alpha 7R IV
      Focusing SystemFast Hybrid AF (Phase-detection / Contrast-detection)Fast Hybrid AF (Phase-detection / Contrast-detection)
      Autofocus ModesMulti-area
      Center
      Selective single-point
      Tracking
      Single
      Continuous
      Touch
      Face Detection
      Live View      		Multi-area
      Center
      Selective single-point
      Tracking
      Single
      Continuous
      Touch
      Face Detection
      Live View
      Lens ServoAutomatic, Continuous-Servo AF, Direct Manual Focus, Manual Focus, Single-Servo AF
      AF Detection Range-5 to +20 EV-3 to +20 EV
      Number of Focus Points759567
      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 9 III Sony Alpha 7R IV
      Lens MountSony ESony E
      Crop Factor1x1x
      Image Stabilization5-Axis Sensor Shift5-Axis Sensor Shift
      Image Stabilization Compensation8 stops5.5 stops
      Digital Image Stabilization
      Lens Breathing Correction
      Gyroscopic Stabilization
      Screen Sony Alpha 9 III Sony Alpha 7R IV
      Screen TypeFully ArticulatedTilting
      Screen TechnologyLCDTFT LCD
      Touch Screen
      Tilt&Flip Screen
      Selfie & Vlogger Friendly LCD Screen
      Screen Size3.2"3.0"
      Screen Resolution2,360k dots1,440k dot
      Top LCD Screen
      Live View
      Live Composition
      Viewfinder Sony Alpha 9 III Sony Alpha 7R IV
      ViewfinderElectronic (OLED)Electronic (OLED)
      Viewfinder Size0.64"0.5"
      Viewfinder Coverage100%100%
      Viewfinder Magnification0.9x0.78x
      Viewfinder Magnification (35mm equivalent)0.9x0.78x
      Viewfinder Resolution9,437k dots5,760k dot
      Viewfinder Eyepoint25 mm23 mm
      Diopter Adjustment-4 to +3-4 to +3
      120 fps Viewfinder Refresh Rate
      Shutter Sony Alpha 9 III Sony Alpha 7R IV
      Shutter TypeElectronic Global Shutter Electronic
      Min Shutter Speed30s30 sec
      Max Shutter Speed (Mechanical or 1st Curtain)1/8000 sec1/8000 sec
      Max Shutter Speed (Electronic)1/80000 sec
      Max Continuous Shooting (Mechanical or 1st Curtain)30.0 fps
      Max Continuous Shooting (Electronic)120.0 fps
      Max Continuous Shooting120.0 fps10.0 fps
      Anti-dust Shutter
      Continuous Shooting Resolution/fps/bufferUp to 120 fps at 24.6 MPUp to 10 fps at 61 MP for up to 68 Frames (JPEG)
      Flash Sony Alpha 9 III Sony Alpha 7R IV
      Built-in Flash
      Flash ModesFlash off
      Autoflash
      Fill-flash
      Slow Sync.
      Rear Sync.
      Red-eye reduction
      Wireless
      Hi-speed sync      		Flash off
      Autoflash
      Fill-flash
      Slow Sync.
      Rear Sync.
      Red-eye reduction
      Wireless
      Hi-speed sync.
      Max Flash Sync Speed1/80000 sec1/250 sec
      Flash Compensation-3 to +3 EV (1/3, 1/2 EV Steps)-3 to +3 EV (1/3, 1/2 EV Steps)
      External Flash Connectivity
      External Flash SystemTTLS-TTL
      External Flash ConnectionShoe Mount, PC TerminalIntelligent Hot Shoe, PC Terminal
      Exposure Sony Alpha 9 III Sony Alpha 7R IV
      Exposure Metering Modes1200-zone evaluativeMulti
      Center-weighted
      Highlight-weighted
      Average
      Spot
      Exposure ModesAperture Priority, Auto, Manual, Program, Shutter PriorityAperture Priority, Manual, Program, Shutter Priority
      Metering Range-5 to +17 EV-3 to +20 EV
      Exposure Compensation±5 EV (1/3, 1/2 EV increments)±5 EV (1/3 EV, 1/2 EV increments)
      Exposure Bracketing ±5 EV (3, 5 shots at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV increments)
      DXO Sony Alpha 9 III Sony Alpha 7R IV
      DxO Low Light ISO34343344
      DxO Color Depth25.026.0
      DxO Dynamic Range14.014.8
      DxO Overall Score9399
      Video Sony Alpha 9 III Sony Alpha 7R IV
      Audio File FormatLPCM
      Internal Recording ModesXAVC HS/XAVC S/XAVC S-I 4:2:2/4:2:0 8/10-Bit
      UHD 4K (3840 x 2160) at 23.98/25/29.97/50/59.94/100/120 fps [30 to 600 Mb/s]
      1920 x 1080 at 23.98/25/29.97/50/59.94/100/120 fps [16 to 222 Mb/s]      		XAVC S
      4K UHD: 3840 x 2160 @ 23.98/25/29.97 fps [60 to 100 Mbps]
      Full HD: 1920 x 1080p @ 23.98/24/25/29.97/50/59.94/100 fps [16 to 100 Mbps]
      AVCHD
      Full HD: 1920 x 1080i @ 50/59.94 fps [17 to 24 Mbps]
      Interval Recording
      Video FormatsMPEG-4, AVCHD, H.264MPEG-4, XAVC S, H.264
      Max Video Resolution3840 x 21603840 x 2160
      External Recording ModesRaw 16-Bit via HDMI
      4672 x 2628 at 23.98/29.97/59.94 fps
      4:2:2 8-Bit via HDMI
      UHD 4K (3840 x 2160) at 23.98/25/29.97 fps
      1920 x 1080 at 23.98/50/59.94 fps
      1920 x 1080i at 50/59.94 fps      		4:2:2 8-Bit via HDMI
      UHD 4K (3840 x 2160) @ 23.98/24.00/25/29.97 fps
      1920 x 1080p @ 23.98/24.00/50/59.94 fps
      1920 x 1080i @ 50/59.94 fps
      No crop on 4K Videos
      Focus Mapping function for Videos
      Webcam Functionality
      Gamma CurveS Cinetone, Sony S-Log 3
      Unlimited Video Recording
      Recording Limit13 hours
      IP Streaming
      Terminals Sony Alpha 9 III Sony Alpha 7R IV
      Audio I/O1 x 1/8" / 3.5 mm TRS Stereo Headphone Output
      1 x 1/8" / 3.5 mm TRS Stereo Microphone Input      		1 x 1/8" / 3.5 mm TRS Stereo Headphone Output
      1 x 1/8" / 3.5 mm TRS Stereo Microphone Input
      Power I/O1 x USB-C Input/Output1 x USB-C Input/Output
      Other I/O1 x RJ45 Data Output
      1 x USB-C Data Input/Output (Shared with Power Input)
      1 x PC Sync Socket (Sync) Output
      1 x Sony Multi/Micro-USB Input/Output      		1 x Sony Multi/Micro-USB Input/Output (Shared with Remote Input)
      1 x USB-C (USB 3.2 / 3.1 Gen 1) Input/Output (Shared with Power Input)
      1 x PC Sync Socket Output
      USB SpeedUSB 3.2 Gen 2x1 (10 GBit/sec)USB 3.2 Gen 1x1 (5 GBit/sec)
      HDMI Output Full Size Micro
      SpeakerMonoMono
      Built-in MicrophoneStereoStereo
      Microphone Input
      Headphone Output
      Flash Sync Port
      Connectivity Sony Alpha 9 III Sony Alpha 7R IV
      Built-in GPS
      Built-In Wi-Fi
      Wi-Fi VersionWi-Fi 5, 802.11ac/b/g/n, 2.4/5 GHzWi-Fi 5, 802.11ac/b/g/n, 2.4/5 GHz
      Built-In Bluetooth
      Bluetooth Version5.0
      NFC
      Mobile App Compatible: Android & iOS
      App Name: Creators' App
      Functionality: Access Stored Files, Adjust Settings, Remote Control, View Live Feed
      *As of November, 2023: Check with manufacturer for the most up-to-date compatibility
      Remote Control via smartphone
      Environmental Sony Alpha 9 III Sony Alpha 7R IV
      Environmental Sealing
      Operating Temperature32 to 104°F / 0 to 40°C32 to 104°F / 0 to 40°C
      Physical Sony Alpha 9 III Sony Alpha 7R IV
      Dimensions136 x 97 x 83 mm (5.35 x 3.82 x 3.27")129 x 96 x 78 mm (5.08 x 3.78 x 3.07")
      Weight (inc. batteries)678 g (1.49 lb / 23.92 oz)665 g (1.47 lb / 23.46 oz)
      Box Dimensions (LxWxH)9.5 x 6.1 x 5.5"
      Package Weight3.04 lb
      Power and Storage Sony Alpha 9 III Sony Alpha 7R IV
      Battery PackNP-FZ100NP-FZ100
      Battery Life530 shots with LVD
      400 shots with viewfinder      		670 shots
      USB Charging
      Internal Storage
      External StorageDual Slot: CFexpress Type A / SD (UHS-II)Dual Slot: SD/SDHC/SDXC (UHS-II)
      Other Sony Alpha 9 III Sony Alpha 7R IV
      Self Timer 2, 5, 10 secs + continuous, 3 or 5 frames 2, 5 or 10 sec
      Orientation Sensor
      Tripod Mounting Thread1 x 1/4"-20 Female (Bottom)1 x 1/4"-20 Female (Bottom)
      Accessory Mount1 x Hot Shoe Mount
      Material of ConstructionMagnesium AlloyMagnesium Alloy
      Electronic Level Gauge


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