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Home → Comparison

Nikon Z6 vs Sony a9 II: Which One Should You Get?

By Jason Polak No Comments
Last Updated On September 27, 2024

Even though the Nikon Z6 and Sony a9 II are both 24 megapixel full-frame cameras, they are actually rather different under the surface. The Nikon Z6 is a general-purpose camera, that is capable in most types of photography, whereas the Sony a9 II shines in the toughest of action situations with a high-end autofocus system. Maybe you’re wondering if those fast-paced features are worth the extra $2000+ of the Sony a9 II. So, let’s put these cameras against each other below.

Nikon Z6 vs Sony a9 II Specifications Comparison

Camera FeatureNikon Z6Sony a9 II
AnnouncedAugust 2018October 2019
Camera TypeMirrorlessMirrorless
Sensor TypeBSI CMOSStacked CMOS
Image ProcessorEXPEED 6BIONZ (front-end LSI)
Resolution24.5 MP24.2 MP
Pixel Dimensions6000×40006000×4000
Sensor Dimensions36 x 24 mm (Full Frame)35.6 x 23.8 mm (Full Frame)
Sensor Pixel Size5.94µ5.93µ
Low Pass FilterYesYes
IBIS (In-Body Image Stabilization)YesYes
Base ISOISO 100ISO 100
Max Native ISOISO 51,200ISO 51,200
Extended ISOs50-204,80050-204,800
High-Resolution Sensor ShiftNoNo
Focus Stack BracketingYesNo
Fastest Shutter Speed1/80001/32000
Longest Shutter Speed900 seconds30 seconds
Continuous Shooting (Mechanical Shutter)12 FPS20 FPS
Continuous Shooting (Electronic Shutter)12 FPS20 FPS
Notes for High FPS ShootingNoneCompressed raw only at 20 FPS (uncompressed raw is available at 12 FPS)
Buffer Size (Raw)43 (12 FPS)239 (20 FPS)
Autofocus SystemHybrid PDAFHybrid PDAF
Autofocus Points273693
Low-Light AF Sensitivity (f/2, ISO 100)-6 EV-3 EV
Voice MemoYesYes
Built-in FlashNoNo
Standard Flash Sync Speed1/2001/250
Video Features
Maximum Video Bit Depth (Internal)8 bits8 bits
Maximum Video Bit Depth (External)10 (12 with paid upgrade)8 bits
Raw VideoNo (Yes, externally, with paid upgrade)No
4K Maximum Framerate30 FPS30 FPS
1080P Maximum Framerate120 FPS100 FPS
Additional Video Crop Factor1.5x crop at 4K 60p (4K 30p has no additional crop)No
Chroma Subsampling4:2:0, 4:2:2 (External)4:2:0, 4:2:2 (External)
Video Recording Limit30 min780 min
Physical and Other Features
Card Slots12
Slot 1 TypeCFExpress Type B or XQDSD (UHS-II)
Slot 2 TypeN/ASD (UHS-II)
Rear LCD Size (Diagonal)3.2 in3 in
Rear LCD Resolution2.1 million1.44 million
Articulating LCDSingle AxisSingle Axis
TouchscreenYesYes
ViewfinderEVFEVF
Viewfinder Magnification0.8x0.78x
Viewfinder Resolution3.69 million3.69 million
Viewfinder Coverage100%100%
GPSNoNo
BluetoothYesYes
WiFiYesYes
USB TypeType C 3.1Type C 3.2 Gen 1
Battery TypeEN-EL15bNP-FZ100
Battery Life (Viewfinder)390 frames500 frames
Battery Life (Rear LCD)410 frames690 frames
Weather SealedYesYes
Weight (Body Only w/ Battery + Card)675 g (1.49 lbs.)678 g (1.49 lbs.)
Dimensions (LxHxD)134 x 101 x 83 mm (5.3 x 4.0 x 3.2″)1129 x 96 x 78 mm (5.1 x 3.8 x 3.1″)
Price Comparison
MSRP, Body Only$2000 (Check Current Price)$4498 (Check Current Price)
Used PricesNikon Z6 Used PricesSony a9 II Used Prices
1 The Nikon Z6’s official dimensions do not include the depth of the protruding viewfinder. To match the standards of other manufacturers, 15mm were added to the Z6’s depth measurement in this table.

Summary and Recommendations

Both cameras have a similar resolution and form factor, and the specs above are actually more similar than you’d expect. But the specs are hiding the biggest thing that sets Sony a9 II apart: its autofocus system. The a9 II has one of the most capable autofocus systems on the market, more than enough for high-end wildlife and professional sports photography. Combine that with the a9 II’s 20 FPS shooting, and it’s clear why it costs more than double the Nikon Z6. If you are doing fast action, sports, or wildlife, the Sony a9 II is the obvious choice between the two, despite the higher price.

Then again, if that doesn’t apply to you, the Z6 is a much less expensive camera that could be plenty for your needs. There are many used models out there for under $1000 now – a great price for a full-frame camera like the Z6. Image quality is extremely similar between these two cameras, so if that’s your main concern, you can easily go with the Z6. It would also likely be my choice between these two cameras for videography, thanks to the option to send the Z6 for a $200 upgrade to gain Raw video output over HDMI.

Nikon Z6 with F-mount 20mm f1.8G Milky Way
NIKON Z6 + 20mm f/1.8 @ 20mm, 20 seconds, f/2.0, ISO 3200

The choice between these two cameras is fairly easy: If you need high FPS shooting and rock-solid autofocus for any situation, the Sony a9 II is the right choice. On the other hand, if you don’t need to photograph professional sports or birds in flight, the Nikon Z6 is a very capable camera. I personally use the Nikon Z6, and while it can’t compete in the AF department with the Sony a9 II, its autofocus is solid and still enough for everyday subjects.


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Tagged With: Nikon Mirrorless, Nikon Z, Nikon Z6, Sony a9 II, Sony Mirrorless

About Jason Polak

Jason Polak is a bird and wildlife photographer from Ottawa, Canada. He has been interested in photography ever since he received a disposable film camera as a small child. His career as a mathematician led him to move to Australia in 2016, where he started seeing colorful parrots. A few casual shots with a lens completely unsuitable for birds got him hooked, and now wildlife photography is his biggest passion. Jason loves to show the beauty of animals to the world through photography, and one of his lifelong goals is to photograph five thousand species of birds. You can see more of Jason's work on his website or on his YouTube channel.

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