Sony Alpha 7R IV vs Sony Alpha 7R IIIA

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      Specifications

      General Sony Alpha 7R IV Sony Alpha 7R IIIA
      BrandSonySony
      ModelAlpha 7R IVAlpha 7R IIIA
      Predecessor ModelSony Alpha 7R III Sony Alpha 7R II
      Successor ModelSony Alpha 7R V Sony Alpha 7R IV
      MSRP$3500 (body only)$3199 (body only)
      Camera TypeInterchangeable LensInterchangeable Lens
      Body TypeMirrorlessMirrorless
      Video Capture
      Sensor Sony Alpha 7R IV Sony Alpha 7R IIIA
      Sensor TypeBSI-CMOSBSI-CMOS
      Sensor SizeFull FrameFull Frame
      Sensor Dimensions35.7 x 23.8 mm35.9 x 24 mm
      Total Pixels62.5 Megapixel43.6 Megapixel
      Effective Pixels61.0 Megapixel42.4 Megapixel
      Low Pass Filter
      Native ISO Range100 - 32,000100 - 32,000
      Boosted ISO Range50 - 102,80050 - 102,400
      Sensor Shift High Resolution Mode 4/16 shots
      Photo Sony Alpha 7R IV Sony Alpha 7R IIIA
      ProcessorBIONZ XBIONZ X
      Max Image Resolution9504 x 63367952 x 5304
      Image Aspect Ratios1:1, 4:3, 3:2, 16:93:2, 16:9
      Image File FormatJPEG, RAWJPEG, RAW
      JPEG Quality LevelsExtra fine, fine, standard)Extra 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, UnderwaterPresets: Auto, Cloudy, Color Temperature, Custom, Daylight, Flash, Fluorescent (Cool White), Fluorescent (Daylight), Fluorescent (Warm White), Incandescent, Shade, Underwater
      Focus Sony Alpha 7R IV Sony Alpha 7R IIIA
      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 AFAutomatic, Continuous-Servo AF, Direct Manual Focus, Manual Focus, Single-Servo AF
      AF Detection Range-3 to +20 EV-2 to +20 EV
      Number of Focus Points567425
      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 7R IV Sony Alpha 7R IIIA
      Lens MountSony ESony E
      Crop Factor1x1x
      Image Stabilization5-Axis Sensor Shift5-Axis Sensor Shift
      Image Stabilization Compensation5.5 stops5.5 stops
      Digital Image Stabilization
      Screen Sony Alpha 7R IV Sony Alpha 7R IIIA
      Screen TypeTiltingTilting
      Screen TechnologyTFT LCDTFT LCD
      Touch Screen
      Screen Size3.0"3.0"
      Screen Resolution1,440k dot2,360k dot
      Top LCD Screen
      Live View
      Live Composition
      Viewfinder Sony Alpha 7R IV Sony Alpha 7R IIIA
      ViewfinderElectronic (OLED)Electronic
      Viewfinder Size0.5"0.5"
      Viewfinder Coverage100%100%
      Viewfinder Magnification0.78x0.78x
      Viewfinder Magnification (35mm equivalent)0.78x0.78x
      Viewfinder Resolution5,760k dot3,686k dot
      Viewfinder Eyepoint23 mm23 mm
      Diopter Adjustment-4 to +3-4 to +3
      Shutter Sony Alpha 7R IV Sony Alpha 7R IIIA
      Shutter TypeElectronicElectronic
      Min Shutter Speed30 sec30 sec
      Max Shutter Speed (Mechanical or 1st Curtain)1/8000 sec1/8000 sec
      Max Continuous Shooting10.0 fps10.0 fps
      Continuous Shooting Resolution/fps/bufferUp to 10 fps at 61 MP for up to 68 Frames (JPEG)Up to 10 fps at 42.4 MP for up to 76 Frames (Raw) / 76 Frames (JPEG)
      Up to 8 fps at 42.4 MP for up to 76 Frames (Raw) / 76 Frames (JPEG)
      Up to 6 fps at 42.4 MP for up to 76 Frames (Raw) / 76 Frames (JPEG)
      Up to 3 fps at 42.4 MP for up to 76 Frames (Raw) / 76 Frames (JPEG)
      Flash Sony Alpha 7R IV Sony Alpha 7R IIIA
      Built-in Flash
      Flash ModesFlash off
      Autoflash
      Fill-flash
      Slow Sync.
      Rear Sync.
      Red-eye reduction
      Wireless
      Hi-speed sync.      		Off
      Auto
      Fill-flash
      Slow Sync
      Rear Sync
      Red-eye reduction
      Wireless
      Hi-speed sync
      Max Flash Sync Speed1/250 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 SystemS-TTLTTL
      External Flash ConnectionIntelligent Hot Shoe, PC TerminalIntelligent Hot Shoe, PC Terminal
      Exposure Sony Alpha 7R IV Sony Alpha 7R IIIA
      Exposure Metering ModesMulti
      Center-weighted
      Highlight-weighted
      Average
      Spot      		Multi
      Center-weighted
      Spot
      Exposure ModesAperture Priority, Manual, Program, Shutter PriorityAperture Priority, Auto, Manual, Program, Shutter Priority
      Metering Range-3 to +20 EV-3 to +20 EV
      Exposure Compensation±5 EV (1/3 EV, 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) ±5 EV (3, 5 shots at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV increments)
      DXO Sony Alpha 7R IV Sony Alpha 7R IIIA
      DxO Low Light ISO33443523
      DxO Color Depth26.026.0
      DxO Dynamic Range14.814.7
      DxO Overall Score99100
      Video Sony Alpha 7R IV Sony Alpha 7R IIIA
      Internal Recording ModesXAVC 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]      		XAVC S
      4K UHD: 3840 x 2160 @ 23.98/25/29.97 fps [60 to 100 Mbps]
      Full HD: 1920 x 1080p @ 23.98/25/29.97/50/59.94/100 fps [100 Mbps]
      HD: 1280 x 720 @ 100 fps [50 Mbps]
      AVCHD
      Full HD: 1920 x 1080p @ 23.98/25/50/59.94 fps [17 to 28 Mbps]
      Full HD: 1920 x 1080i @ 50/59.94 fps [17 to 24 Mbps]
      MP4
      Full HD: 1920 x 1080p @ 25/29.97/50/59.94 fps [16 to 28 Mbps]
      HD: 1280 x 720 @ 25/29.97 fps [6 Mbps]
      Interval Recording
      Video FormatsMPEG-4, XAVC S, H.264MPEG-4, AVCHD, XAVC S
      Max Video Resolution3840 x 21603840 x 2160
      External Recording Modes4:2:2 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      		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
      Webcam Functionality
      Gamma CurveHDR-HLG, Sony S-Log 2, Sony S-Log 3
      Unlimited Video Recording
      Recording Limit13 hours30 min
      Terminals Sony Alpha 7R IV Sony Alpha 7R IIIA
      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 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      		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 1x1 (5 GBit/sec)USB 3.2 Gen 1x1 (5 GBit/sec)
      HDMI Output Micro Micro
      SpeakerMonoMono
      Built-in MicrophoneStereoStereo
      Microphone Input
      Headphone Output
      Flash Sync Port
      Connectivity Sony Alpha 7R IV Sony Alpha 7R IIIA
      Built-in GPS
      Built-In Wi-Fi
      Wi-Fi VersionWi-Fi 5, 802.11ac/b/g/n, 2.4/5 GHz802.11b/g/n, 2.4 GHz
      Built-In Bluetooth
      NFC
      Remote Control via smartphone wired, wireless, smartphone
      Environmental Sony Alpha 7R IV Sony Alpha 7R IIIA
      Environmental Sealing
      Operating Temperature32 to 104°F / 0 to 40°C32 to 104°F / 0 to 40°C
      Physical Sony Alpha 7R IV Sony Alpha 7R IIIA
      Dimensions129 x 96 x 78 mm (5.08 x 3.78 x 3.07")127 x 96 x 74 mm (5 x 3.78 x 2.91")
      Weight (inc. batteries)665 g (1.47 lb / 23.46 oz)657 g (1.45 lb / 23.17 oz)
      Box Dimensions (LxWxH)9.5 x 6.1 x 5.5"9.6 x 6.1 x 5.7"
      Package Weight3.04 lb3.005 lb
      Power and Storage Sony Alpha 7R IV Sony Alpha 7R IIIA
      Battery PackNP-FZ100NP-FZ100
      Battery Life670 shots650 shots
      USB Charging
      Internal Storage
      External StorageDual Slot: SD/SDHC/SDXC (UHS-II)Slot 1: SD/SDHC/SDXC (UHS-II)
      Slot 2: SD/SDHC/SDXC/Memory Stick Duo Hybrid (UHS-I)
      Other Sony Alpha 7R IV Sony Alpha 7R IIIA
      Self Timer 2, 5 or 10 sec 2 or 10 sec; continuous 3 or 5 exposures
      Orientation Sensor
      Tripod Mounting Thread1 x 1/4"-20 Female (Bottom)1 x 1/4"-20 Female (Bottom)
      Accessory Mount1 x Hot Shoe Mount1 x Hot Shoe Mount
      Material of ConstructionMagnesium AlloyMagnesium Alloy
      Electronic Level Gauge


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