Sony a9 vs Sony a7RII Comparison

Want to find out the main differences between Sony a9 ($4,498) and Sony a7RII ($2,698)? Here is the detailed comparison of Sony a9 vs Sony a7RII.

Let’s have a brief look at the key features of Sony a9 and Sony a7RII full frame E mount mirrorless cameras before getting into our more detailed comparison.

Sony A9 Key Features:

  • 24.2MP Full-Frame Stacked CMOS Sensor
  • BIONZ X Image Processor & Front-End LSI
  • 693-Point AF System & 20 fps Shooting
  • Blackout-Free Quad-VGA 3.7m-Dot OLED EVF
  • Internal UHD 4K Video Recording
  • 5-Axis SteadyShot INSIDE Stabilization
  • 3.0″ 1.44m-Dot Tilting Touchscreen LCD
  • ISO 204,800, Silent Electronic Shutter
  • Built-In Wi-Fi/Bluetooth, Dual SD Slots
  • Integrated LAN and PC Sync Terminals

Sony A7RII Key Features:

  • 42MP Full-Frame Exmor R BSI CMOS Sensor
  • BIONZ X Image Processor
  • Internal UHD 4K Video & S-Log2 Gamma
  • 5-Axis SteadyShot INSIDE Stabilization
  • 399 Phase-Detect AF Points & 5 fps Burst
  • 0.5″ 2.36M-Dot XGA OLED Tru-Finder EVF
  • 3.0″ 1,228.8k-Dot Tilting LCD Monitor
  • ISO 102,400 and Silent Shutter Mode
  • Durable Reduced-Vibration Shutter Design
  • Built-In Wi-Fi Connectivity with NFC

CameraSize already added the new Sony a9 to their database and here is the size comparison of Sony a9 vs Sony a7RII:


  • Sony Alpha A9 and Sony A7R II are the same width (126.9 mm) and 0% (0.1 mm) shorter than Sony A7R II.
  • Sony Alpha A9 is 4% (2.7 mm) thicker than Sony A7R II.
  • Sony Alpha A9 [673 g] weights 8% (48 grams) more than Sony A7R II [625 g] (*inc. batteries and memory card).
  • Sony Alpha A9 dimensions: 126.9×95.6×63 mm (camera body only, excluding protrusion)
  • Sony A7R II dimensions: 126.9×95.7×60.3 mm (camera body only, excluding protrusion)

You can also see the Sony a9 vs Sony a7RII Side by Side Comparison.

Sony a9 vs Sony a7RII Specifications Comparison

FeaturesSony A9Sony A7RII
AnnouncedApr 19, 2017Jun 10, 2015
Effective pixels24MP42MP
Max resolution6000 x 40007952 x 5304
Sensor SizeFull frame (35.6 x 23.8 mm)Full frame (35.9 x 24 mm)
Sensor Pixel Size~5.93 microns~4.5 microns
Image ProcessorBIONZ XBIONZ X
Native ISO SensitivityISO 100-51,200100-25,600
Boosted ISO SensitivityISO 50 – 204800ISO 50 – 102400
Image Stabilization5-Axis sensor shift5-Axis sensor shift
Autofocus SystemFast Hybrid AF: Wide (693 points (phase-detection AF), 25 points (contrast-detection AF)Fast Hybrid AF with 399 focal plane phase detect points and 25 contrast detect AF points
Number of focus points693399
Viewfinder TypeEVF / LCDEVF / LCD
Viewfinder MagnificationEVF: 1.3cm (0.5-inch) 2.4M-dot XGA color OLED, 100% coverage, 0.78x magnificationEVF: 1.3cm (0.5-inch) 2.4M-dot XGA color OLED, 100% coverage, 0.78x magnification
Viewfinder resolution3,686,4002,359,296
LCD Size3″3″
LCD Resolution1,440,000 dots (360,000 px)1,228,800 dots
LCD TouchscreenYesNo
Minimum shutter speed30 sec30 sec
Maximum shutter speed1/8000 sec1/8000 sec
Maximum shutter speed (electronic)1/32000 sec
Built-in FlashNoNo
Flash X sync speed1/250 sec1/250 sec
Continuous Shooting Speed20 fps with AF/AE5fps
External flashYes (via hot shoe or flash sync port)Yes (via hot shoe)
Storage typesDual SD/SDHC/SDXC slots (UHS-II compatible)SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
Buffer Size (RAW)241 images23
Buffer Size (JPEG)362 images23
Video OutputXAVC S / AVCHD 2.0 / MP4XAVC S / AVCHD 2.0 / MP4
Video Maximum Resolution4K (3840 x 2160) at 30p4K (3840 x 2160) at 30p
Built-in GPSNoNo
Wi-Fi / NFCWifi, NFC, BluetoothWifi, NFC, No Bluetooth
Battery Life650 shots, 105 minutes video footage290 shots
USB VersionUSB 2.0 (480 Mbit/sec)USB 2.0 (480 Mbit/sec)
Weight673 g (1.48 lb / 23.74 oz)625 g (1.38 lb / 22.05 oz)
Dimensions5.0 x 3.8 x 2.5 in.(127 x 96 x 63 mm)5.0 x 3.8 x 2.4 in.(127 x 96 x 60 mm)
Price$4,498 (as introduced)$2,698 (current)