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Sony Alpha 9 vs Sony Alpha 9 II

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

SonyAlpha 9SonyAlpha 9 II
Overview
ReleasedMay 2017November 2019
Image and sensor
Camera typeMirrorlessMirrorless
Sensor formatFull frameFull frame
Sensor typeBack-illuminated stacked Exmor RS CMOSStacked Exmor RS CMOS with integral memory
Sensor dimensions35.6 × 23.8 mm35.6 × 23.8 mm
Effective resolution24.2 MP24.2 MP
Largest image6000 × 40006000 × 4000
RAW recordingYesYes
Standard ISO range100–51200100–51200
Sensor detailApproximately 28.3 million total pixels; stacked sensor with integral memory and backside illumination.Approximately 28.3 million total pixels; 3:2 sensor.
Image formatsJPEG, RAW and RAW+JPEG; Sony ARW 2.3 compressed or uncompressed RAW.JPEG, RAW and RAW+JPEG; Sony ARW 2.3 compressed or uncompressed RAW.
ISO detailMechanical-shutter stills use standard ISO 100–51200, expandable to 50–204800. Electronic-shutter stills use ISO 100–25600 with expanded ISO 50. Movie ISO 100–51200, expandable to 102400.Mechanical-shutter stills use standard ISO 100–51200, expandable to 50–204800. Electronic-shutter stills use ISO 100–25600 with expanded ISO 50. Movie ISO 100–51200, expandable to 102400.
Image processorBIONZ X with front-end LSI.BIONZ X.
Lens and shooting
Lens mountSony E-mountSony E-mount
StabilisationSensor shiftSensor shift
Maximum continuous burst20 fps20 fps
AutofocusCurrent Sony specification lists 693 full-frame phase-detection points and 425 contrast-detection points; contrast points increased from 25 through firmware. Phase coverage approximately 93%; sensitivity EV −3 to 20 with an F2 lens at ISO 100. Current features include Real-time Tracking and Eye AF; launch reviews describe earlier firmware.Fast Hybrid AF with 693 full-frame phase-detection points covering approximately 93% of the image area and 425 contrast points; Real-time Tracking and Eye AF. AF/AE calculations up to 60 times per second under maker conditions.
Burst detailUp to 20 fps electronic Hi with AF/AE tracking under Sony's supported-lens and exposure conditions; up to 12 fps with uncompressed RAW, or 5 fps mechanical. Maker buffer claim is 241 compressed RAW or 362 JPEG frames using a UHS-II card under its stated test conditions.Up to 20 fps electronic Hi with AF/AE tracking at shutter speeds of 1/125 second or faster, depending on compatible lens and shooting settings; up to 10 fps mechanical. Sony claims 239 compressed RAW or 361 JPEG frames with UHS-II media under its test conditions.
Stabilisation detailFive-axis sensor shift; Sony claims 5.0 stops under CIPA pitch/yaw conditions with Planar T* FE 50mm F1.4 ZA and long-exposure noise reduction off.Five-axis sensor shift; Sony claims 5.5 stops under CIPA pitch/yaw conditions with Planar T* FE 50mm F1.4 ZA and long-exposure noise reduction off.
Video
Highest video resolution3840 × 2160 at 30 fps3840 × 2160 at 30 fps
Video detailXAVC S 3840 × 2160 at 30p/24p in NTSC mode or 25p PAL, up to 100 Mbps; Full HD 120p NTSC or 100p PAL is lower resolution. HDMI supports 8-bit 4:2:2 output. No video picture profiles or S-Log.Japanese specification lists XAVC S 3840 × 2160 at 30p/24p, up to 100 Mbps. Full HD 120p is lower resolution. No picture profiles or S-Log. Full-frame 24p oversampling uses approximately 2.4 times 4K information; 30p uses approximately 1.6 times.
AudioBuilt-in stereo microphone; 3.5 mm stereo microphone and headphone sockets; compatible Multi Interface Shoe audio accessories.Built-in stereo microphone; microphone and headphone sockets; Multi Interface Shoe with digital audio interface. Voice memos can accompany still photographs.
Screen and viewfinder
ViewfinderElectronicElectronic
Screen size3″3″
Screen dots1,440,0001,440,000
TouchscreenYesYes
Tilting screenYesYes
Display detailRear TFT LCD tilts approximately 107° upwards and 41° downwards.Rear TFT LCD tilts approximately 107° upwards and 41° downwards.
Viewfinder detail0.5-inch Quad-VGA OLED, 3686400 dots, 100% coverage and approximately 0.78× magnification with a 50 mm lens at infinity; selectable 60/120 fps display.0.5-inch electronic viewfinder with 3686400 dots, 100% coverage and approximately 0.78× magnification with a 50 mm lens at infinity; selectable 60/120 fps display.
Connections and design
Wi-FiYesYes
BluetoothYesYes
Battery life (maker's claim)650 photographs690 photographs
Body weight588 g593 g
Release detailSony Japan lists 26 May 2017 for ILCE-9; this is the Japanese first-sale date, not a UK release claim.Sony Japan specifies 1 November 2019 for ILCE-9M2; this is the Japanese on-sale date, not a UK release claim. The UK legacy specification URL now redirects to a family page, so exact Japanese specifications are used.
Recording mediaSlot 1 accepts UHS-I/UHS-II SD; slot 2 accepts UHS-I SD or Memory Stick Duo. Simultaneous and separate-format recording supported.Two UHS-II SD card slots.
PortsMulti/Micro USB, Micro HDMI Type D, wired LAN, sync terminal, 3.5 mm microphone and headphone sockets and Multi Interface Shoe.USB Type-C, Multi/Micro USB, Micro HDMI Type D, 1000BASE-T Ethernet, sync terminal, 3.5 mm microphone socket, headphone socket and digital-audio Multi Interface Shoe.
Wireless connectionsWi-Fi IEEE 802.11b/g/n at 2.4 GHz; Bluetooth 4.1 and NFC; smartphone location linkage supported.Wi-Fi IEEE 802.11a/b/g/n/ac at 2.4/5 GHz; NFC and Bluetooth remote support.
Battery life detailNP-FZ100; CIPA approximately 650 photographs with LCD or 480 with viewfinder; USB charging and power supported.NP-FZ100; CIPA approximately 690 photographs with LCD or 500 with viewfinder; charging and power through USB Type-C or Multi/Micro USB.
DimensionsApproximately 126.9 × 95.6 × 73.7 mm (width × height × maximum depth); grip-to-monitor depth 63.0 mm.Approximately 128.9 × 96.4 × 77.5 mm (width × height × maximum depth); grip-to-monitor depth 67.3 mm.
Weight detailSony Japan specifies approximately 588 g body only or 673 g with battery and memory card, excluding lens. The UK page labels 588 g as including battery/card, conflicting with the explicit Japanese split.Approximately 593 g body only or 678 g with battery and memory card, excluding lens.
In the boxNP-FZ100 battery, BC-QZ1 charger, power cord, cable protector, AC-UUE12 AC adaptor, shoulder strap, body cap, accessory shoe cap, eyepiece cup and Micro USB cable, according to Sony UK.NP-FZ100 battery, BC-QZ1 charger, power cord, cable protector, shoulder strap, body cap, accessory shoe cap, eyepiece cup and USB Type-C cable, according to Sony Japan.

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