Differences Between Sony A9 and A7 II

New Sony A9 ILCE-9 Camera

This is the new flagship camera from Sony dubbed the A9, model designation ILCE-9.  It boasts 20 fps shooting with 693 focus points and a blackout-free 3.69 mp electronic viewfinder.  The camera is capable of shooting 4K (2160p) movies.  The A9 has dual memory card slots and a new battery.

Let's see how it compares to the previous 24 mp A7 II camera.

CombatantsSony Alpha 9 (ILCE-9)Sony Alpha 7 II (ILCE-7M2)
Number of effective pixels24.2 MP24.3 MP
ISO Sensitiviy50-204800 (3 stops better)50-25600
Movie SizeXAVC S 4K:3840 x 2160(30p, 100M), 3840 x 2160(24p, 100M), 3840 x 2160(30p, 60M), 3840 x 2160(24p, 60M), XAVC S HD:1920 x 1080(120p, 100M), 1920 x 1080(120p, 60M), 1920 x 1080(60p, 50M), 1920 x 1080(30p, 50M), 1920 x 1080(24p, 50M), AVCHD:1920 x 1080(60p, 28M, PS), 1920 x 1080(60i, 24M, FX), 1920 x 1080(60i, 17M, FH), 1920 x 1080(24p, 24M, FX), 1920 x 1080(24p, 17M, FH), AVC MP4:1920 x 1080(60p, 28M), 1920 x 1080(30p, 16M), 1280 x 720(30p, 6M)AVCHD 2.0 / MP4 / XAVC S (up to 1920 x 1080/60p 50 Mbps)
Audio Recording FormatsXAVC S:LPCM 2ch, AVCHD: Dolby® Digital (AC-3) 2ch, Dolby Digital Stereo Creator, MP4: MPEG-4 AAC-LC 2chAVCHD / MP4 / XAVC S
GPS InformationLocation Information Link from SmartphoneNone
Memory card slotsSLOT1:Slot for SD(UHS-I/II compliant) memory card, SLOT2:Multi slot for Memory Stick Duo/SD(UHS-I compliant) memory cardSingle SLOT:Multi slot for Memory Stick Duo/SD(UHS-I compliant) memory card
Focus SensorExmor RS CMOS SensorExmor CMOS Sensor
Focus Points35 mm full frame: 693 points (phase-detection AF), APS-C mode with FF lens: 299 points (phase-detection AF), with APS-C lens: 221 points (phase-detection AF) / 25 points (contrast-detection AF)35 mm full frame: 117 points (phase-detection AF)
APS-C: 99 points (phase-detection AF) / 25 points (contrast-detection AF)
Focus Sensitivity RangeEV-3 to EV 20 (ISO 100 equivalent with F2.0 lens attached)EV-1 to EV 20 (ISO 100 equivalent with F2.0 lens attached)
Multi-selectorNew joystick to select focus points.None.
Electronic Viewfinder3 686 400 dots (3.69 MP)
Blackout Free
2,359,296 dots (2.36 MP)
Rear LCDTouch Screen Panel with Touch Focus capability-
Flash Bracketing3/5/9 frames selectable. With 3 or 5 frames, in 1/3, 1/2, 2/3, 1.0, 2.0, 3.0 EV increments, with 9 frames, in 1/3, 1/2, 2/3, 1.0 EV increments.None.
Drive SpeedAUTO/Electronic Shutter: Continuous shooting: Hi: max. 20 fps, Mid: max. 10fps, Lo: max. 5 fps 789, Mechanical Shutter: Continuous shooting: Hi: max. 5 fps, Mid: max. 5fps, Lo: max. 2.5 fps105 fps (in High Continuous Shooting)
File TransferFTP transfer via new LAN terminal
Wirelessly via PlayMemories App
Wirelessly via PlayMemories App
BatteryNP-FZ100 Rechargeable Battery NP-FW50 W-series Rechargeable Battery
Battery LifeStill Images: Approx. 480 shots (Viewfinder) / approx. 650 shots (LCD monitor) (CIPA standard)

Movie: Approx. 105 min (Viewfinder) / Approx. 120 min (LCD monitor) Continuous: Approx. 185 min (Viewfinder) / Approx. 195 min (LCD monitor)
Still Images: Up to 350 shots.

Movie:  Actual: Approx. 60 min with viewfinder, approx. 65 min with LCD screen Continuous: Approx. 100 min with viewfinder, approx. 100 min with LCD scree
Size126.9mm x 95.6mm x 63.0mm
5 x 3 7/8 x 2 1/2 inches
126.9 x 95.7 x 59.7 mm
5 x 3 7/8 x 2.35 inches
Weight with battery and memory card23.7 oz (1.48 lb) 673 g19.61 oz (1.22 lb) 556 g

Sony A9 with new 100-400mm f/4.5-5.6 G Master Lens

Sony Alpha a9 Features Video

Here is the A7 II vs A7r comparison.

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