Nikon Z6 vs Sony A7III – Differences and Specs Comparison

After a few weeks of teasing everyone online, Nikon launched its new camera mount called Z-mount, along with two mirrorless cameras — the Z7 and Z6. They have a lot in common, but their biggest difference is sensor resolution.

nikon z6 sony a7iii specs comparison

image source: Nikon / Sony

The Z7 sports a 45MP sensor, while the Z6 packs 24MP. These two cameras are essentially direct competitors of Sony’s A7RIII and A7III. In this article, we’ll be comparing Nikon Z6 and A7III. First, let’s take a look at some of the specs they have in common, and then we’ll take a look at the differences. Both cameras have:

  • 24MP Full-frame sensor with backside illumination (BSI)
  • ISO sensitivity 100-51200
  • 5-axis in-body image stabilization
  • 4K video recording at up to 30 fps
  • 1080p video recording at up to 120fps
  • Weather-sealed body
  • Headphone and microphone jack
  • Wi-Fi and Bluetooth
  • USB charging
  • Both retail for $1,999

Now that we’ve taken a look at what Nikon Z6 and Sony A7III have in common, let’s discuss some of the main differences:


Of course, these two cameras have completely different mounts. Nikon’s Z-mount is quite a bit larger than Sony’s E-mount (55mm vs 46mm). Apparently, this will allow Nikon to make some interesting lenses, like the upcoming Noct 58mm f/0.95.

Speaking of lenses, one of the problems with Z-mount is that it’s totally new and there are only a handful of lenses Nikon is going to release at the start, one of them being the “kit” lens – Nikkor Z 24-70 f/4. Coming soon are also the Nikkor Z 35mm f/1.8 and 50mm f/1.8. The aforementioned Noct 58mm f/0.95 and five more Z lenses (20mm f/1.8, 85mm f/1.8, 24-70mm f/2.8, 70-200mm f/2.8 and 14-30mm f/4) are expected to be released in 2019, along with more lenses in 2020.

nikon noct 58mm

image source: Nikon

In comparison, Sony already has 24 E-mount lenses designed specifically for their full-frame mirrorless cameras, and with many other E-mount lenses on the market from other manufacturers like Sigma, Rokinon (Samyang) and others, they are definitely leading the way here.

Autofocus Points

Nikon Z6 has 273 hybrid (phase/contrast) detection points and 90 percent coverage of the sensor, while the Sony A7III is a bit better with 693 phase detection points (93 percent coverage) and 425 contrast detection points.

The autofocus on the Z6 is pretty good, but Sony had many more years to perfect it and it is widely considered as one of the best autofocus systems right now. On top of that, Sony’s Eye AF is simply amazing and it doesn’t exist on the new Nikon mirrorless cameras.

Body Size and Weight

Nikon Z6 features a little bit bulkier body than the Sony A7III, but some people will actually prefer this as the front grip is bigger as well. When it comes to weight, the difference isn’t that huge with Nikon Z6 coming in at 1.49 lb (675 grams) compared to 1.43 lb (650 grams) on the A7III.

Burst Shooting

The Z6 wins in this department with 12fps, compared to 10fps on the A7III. However, this is not the entire story, as A7III can do 10fps with AE tracking, while the Z6 can’t.

Video Recording

While both cameras have pretty much identical video specs (as we mentioned above), there is a small difference when you’re recording video to an external recorder. In this case, the Z6 allows you to output 10-bit footage, while the A7III is limited to 8-bit output. This definitely makes a difference for serious video shooters.

Memory Cards

sony a7iii best memory cards

image source: Sony

Sony A7III has dual SD card slots, one of which supports UHS-II cards while other one is limited to UHS-I speeds. If you want to learn more about this, feel free to check out our article on best SD cards for A7III.

In comparison, Nikon Z6 has only one XQD memory card slot that features faster write/read speeds, but not by a whole lot compared to UHS-II cards. In addition, XQD cards are more expensive and harder to find. However, if you opt for the Z6, XQD is your only choice so make sure to check out our article on best XQD memory cards for Nikon Z6.

Electronic Viewfinder

When it comes to the EVF, Nikon Z6 takes the win, as it has a 3.69 million dot viewfinder with a magnification of 0.80x compared to A7III’s 2.36 million dot panel with 0.78x magnification. Refresh rate on both EVFs is 60fps.

Battery Life

When it comes to battery life, the difference is enormous in Sony’s favor. Nikon Z6 is rated at about 310 shots per charge, while the Sony A7III can do 710 shots on a single charge. That’s more than twice as much!

We really hope this article helped you understand some of the main differences between the Nikon Z6 and Sony A7III.