Sony a7R IV vs Sony FX3

Key Differences

  • Sony a7R IV has a better effective resolution (61 MP vs 12.1 MP).
  • Sony FX3 has a better 4k recording (Up to 120p vs Up to 30p).
  • Sony FX3 has a better 1080p recording (Up to 240p vs Up to 120p).
  • Sony FX3 has a better low light af (-6 EV vs -3 EV).
  • Sony FX3 has a better phase detect points (759 vs 567).
Product
Sony a7R IV
Sony
$3,499
Sony FX3
Sony
$3,899
Imaging
Sensor TypeBSI CMOSBSI CMOS
Sensor SizeFull-FrameFull-Frame
Effective Resolution61 MP12.1 MP
Max Image Size4K4K
Lens MountSony ESony E
Exposure Control
ISO Range (Native)100 โ€“ 3200080 โ€“ 102400
ISO Range (Extended)50 โ€“ 10240040 โ€“ 409600
Mechanical Shutter1/8000โˆ’
Electronic Shutter1/80001/8000
Flash Sync Speed1/2501/250
Still Image Capture
Continuous Shooting10 fpsโˆ’
Buffer (RAW)68 shotsโˆ’
Video Capture
Max Resolution4K4K
8K Recordingโˆ’โˆ’
4K RecordingUp to 30pUp to 120p
1080p RecordingUp to 120pUp to 240p
10-bit InternalYesYes
Recording Limit29 minNo limit
Log ProfilesS-Log3 / HLGS-Log3 / HLG / S-Cinetone
Built-in MicStereoStereo (XLR via top handle)
Headphone JackYesYes
Mic InputYesYes
HDMI OutputMicro (Type D)Full-size (Type A)
Focus
Phase Detect Points567759
Contrast Detect Pointsโˆ’โˆ’
Low Light AF-3 EV-6 EV
Eye AFYesYes
Animal AFYesYes
Vehicle AFNoNo
Viewfinder
EVF TypeOLEDโˆ’
EVF Resolution5.76M dotsโˆ’
EVF Magnification0.78xโˆ’
Monitor
LCD Size3.2"3"
LCD Resolution1.44M dots1.44M dots
LCD TypeTiltingVari-Angle
Touch ScreenYesYes
Interface
Wi-FiWi-Fi 5Wi-Fi 5
Bluetoothv4.2v5
USBUSB-C 3.1 Gen 1USB-C 3.2
GPSNoNo
General
Price (MSRP)$3,499$3,899
Body MaterialMagnesium AlloyMagnesium Alloy
Dimensions128.9ร—96.4ร—77.5 mm129.7ร—77.8ร—84.5 mm
Weight665g (1.47 lb)715g (1.58 lb)
Weather SealedYesYes
In-Body StabilizationYesYes
Battery Life (EVF)530 shotsโˆ’
Battery Life (LCD)670 shots600 shots
Battery TypeNP-FZ100NP-FZ100