In launching its new Nikon Z series mirrorless camera system, Nikon aims to reestablish itself as the number one full frame camera manufacturer. Sony has ripped up trees in the full frame market with its mirrorless A7 series and recently scored something of a coup taking the top spot for full frame mirrorless camera sales in the US. With Canon yet to enter the race, and FujiFilm concentrating on APS-C models (as well as medium format), the new Nikon Z series is the first serious rival to Sony in this space. So how do the current Nikon and Sony models compare? We take a closer look at the specs and discuss some initial thoughts after having a play with the new Nikon Z6 and Z7 models at yesterday’s press event.

Key Specifications

Nikon Z6Sony A7 III
Full frame 24.2Mp BSI sensorFull frame 24.2Mp BSI sensor
ISO 100 u2013 51,2000tttISO 100 u2013 51,200
273 autofocus points693 autofocus points
3.6m-dot EVF2.4m-dot EVF
3.2-inch touch-screen3.0-inch touch-screen LCD
12fps continuous shooting10 fps continuous shooting
4k/30p & 1080/120p video4k/30p & 1080/120p video
5-axis in-camera stabilization5-axis in-camera stabilization
u00a32099 (body only)u00a31999 (body only)

Snap verdict

The Z6 is impressive. The larger Z mount looks massive compared to the Sony E mount and the promise of a 58mm f/0.95 prime lens is something new and exciting for the market.

On first use, I was blown away by the big and bright EVF image, which is going to be a key selling point alongside the new lens mount. The FTZ lens adapter makes the Z6 a viable proposition for existing Nikon shooters to switch immediately too, although the lack of a battery grip (although there’s one in development) and a single QXD card slot might deter some, and I put myself in that category.

If you don’t already own Nikkor glass, the larger range of native Sony FE lenses might make the A7 III more attractive at this stage but, with a couple of fast primes and a standard zoom available for the Z6 at launch, Nikon has the basics covered. If I was going out to buy one of these cameras in the next few months, I’d be buying the Z6 without a doubt.

Nikon Z6 vs Sony A7 III


Of the two Z series models, the 24.5Mp Nikon Z6 is intended as a direct competitor to the recently launched 24.2Mp Sony A7 III. Both feature Back-side Illuminated (BSI) sensor technology, which helps improve the light gathering capabilities of the sensor for improved image quality in low light, the same native (ISO 100 – 51,200) sensitivity range and, 0.3Mp aside, the same resolution. So there’s no clear winner here and we call a tie at this stage.

Obviously actual image quality is more important than sensor specs, so as soon as we get our hands on a full production model to run a proper test we’ll publish the images so you can compare for yourselves.

Build Quality

The Nikon Z6 offers a similar ‘prosumer’ build quality to semi-pro DLSRs like the D850, featuring a magnesium alloy body with weather and dust resistance, so it’s not quite as weather-sealed or tank-like as a full pro body like the Nikon D5.

My main complaint with mirrorless cameras generally is their poor handling, but the Z6 features a reasonably sized handgrip, with a deep recess that is comfortable to use.

A battery grip to improve handling (especially for vertical shooting) is apparently ‘under development’ so it sounds like we might not see that for a while, which is a shame, and something of a deal-breaker for me.

The body design also only incorporates a single QXD card slot, so there’s no instant back up, which might be of concern to some pros. More encouraging though is the illuminated top-plate LCD, very similar to the 2nd screen on the FujiFilm GFX, which is handy for quickly checking key shooting settings.

Overall the Z6 is slightly bigger than the A7 III, but not by much, and the Sony is similar in terms of build quality (albeit with less weatherproofing). The A7 III does include dual SD card slots however and with battery packs already available to double battery life and improve handling that’s a win for the Sony at this stage.

The controls and features activated in use will have a significant bearing on battery life, but Nikon said the experience of their Ambassadors during real-world testing was around 650 shots, which is similar to the Sony.

The A7 III offers slightly more body-mounted controls, including 4 custom buttons, compared to 2 on the Z6 – or 3 if you include the joystick, which is also customisable to some degree.

The Z6 also features dual scroll wheels to adjust shutter and aperture in manual mode, an ISO button on the top plate, as we’ve come accustomed too on recent Nikon’s, and with white balance and focus controls assigned to the custom buttons I had all the controls I want regularly in convenient places. The custom buttons are quite close together and slightly awkward to reach in the handgrip recess, but I’m being a bit picky and actually with slightly fewer body mounted button on the Z6 compared to the A7 III I found it slightly less fiddly than many mirrorless cameras.

Nikon Z6 vs Sony A7 III


The Nikon Z6’s hybrid autofocus system offers 273 auto-focus points with automatic switching between focal-plane phase-detection and contrast-detection autofocus. Modes include face detection, flexible spot and wide-area target selection, allowing use of autofocus points close to the edge with 90% frame coverage.

Nikon claims up to -4Ev focusing using lenses with an f/2 or wider maximum aperture and accurate tracking of both small and fast moving objects in any light.

Autofocus has been a key selling point for the Sony A7 III, which also offers a hybrid phase/contrast detect system, with similar autofocus modes and slightly increased frame coverage of 93%.

Boasting 693 autofocus points, on paper the Sony A7 III’s autofocus looks to have the edge for faster and more accurate tracking, too.

During very brief initial testing in low light conditions, the Nikon Z6 kept pace with the stunt bikers and parkour athletes Nikon laid on and once it’d locked on the face detection kept the face sharp even when the subject turned away momentarily. Being used to Nikon 3D autofocus tracking on DSLRs, I found the new focus system a little fiddly at first, but once I’d mastered setting the focus tracking it felt more comfortable and intuitive.

The Z6 also offers a tap-to-track feature via the LCD, which will be of great benefit to videographers, and once the tracking is set the focus sticks to that subject even when you switch to the EVF.

Nikon Z6 vs Sony A7 III

Electronic Viewfinder

With the mirror boxes removed to facilitate the smaller design, the performance of the electronic viewfinder (EVF) is critical in mirrorless cameras. The Z6 includes a 3.6m-dot (QUAD-VGA) OLED EVF with frame coverage and magnification of 100% and 0.80x, as well as a 37-degree viewing angle.

The Sony A7 III EVF offers the same 100% frame coverage, with a similar 0.78x magnification, and similar OLED display for good contrast and deeper blacks, but with a lower 2.4m-dot (XGA) resolution.

Nikon claims its superior optical and image processing technologies have allowed it to produce an EVF comparable to that of an optical viewfinder and I think I agree. It was one of the standout features of the new camera for me, as I was blown away by the large, bright and crisp view the EVF offered.

Bearing in mind we were in low light, with fast moving subjects, I didn’t notice any ghosting or delay, and it was clearly a much larger and brighter image compared to the Sony A7 III. A big win here for Nikon.

Nikon Z6 vs Sony A7 III


With 5 years of full frame mirrorless development under their belt, the Sony FE range now extends to 20 lenses, covering ultra wide-angle through to super telephoto focal lengths, zooms and ‘fast’ aperture primes. Add to that the growing range if 3rd party FE mount lenses available and there’s plenty of choice for different types of photography on the Sony system.

In comparison, the new Nikon Z range is currently limited to 3 lenses on launch, including the 24-70mm f/4 standard ‘kit’ lens, as well as 35mm and 50mm f/1.8 prime lenses. More Nikon Z mount lenses are promised in due course, with 20mm and 85mm f/1.8 primes, 24-70mm and 70-200mm f/2.8 zooms and an ultra-wide 14-30mm f/4 coming in 2019, as well as a 50mm f/1.2, 24mm f/1.8 and 14-24mm f/2.8 in 2020.

The larger new Nikon Z mount has a diameter of 55mm compared to 46.7mm for the Sony E mount used on the A7 III. It’s startling to see how much bigger that is with the cameras side-by-side and it makes very wide aperture lenses possible, with a mouth-watering 58mm f/0.95 prime lens promised in 2019. Now a lens of this spec is not going to be cheap or particularly small you’d imagine, but it opens up new shooting and creative possibilities currently not readily accessible on mirrorless cameras, which is exciting.

If you’re an existing Nikon shooter with a bag of Nikkor glass, the lack of native Z mount lenses is offset somewhat by the FTZ lens adapter, which enables the use of 93 Nikon F lenses with full autofocus and auto-exposure capabilities and some compatibility with up to 360 F mount lenses.

Nikon claims the FTZ adapter offers no compromise in performance and image quality, as it’s essentially just adding back in the flange distance removed from the mirrorless camera design, and in testing the autofocus certainly seemed as snappy as usual.

The Nikon Z6 also features an in-camera, 5-axis, sensor shift, image stabilisation system, that’s effectively the same as the Sony A7 III, with both systems claiming up to 5-stops of ‘camera-shake’ reduction. Again this is a big deal for existing Nikon shooters who can now get sharper shots at slower shutter speeds using existing non-VR Nikkor F mount lenses they already own via the adapter. The Nikon system is designed to work in tandem with the Nikon VR lenses in much the same way as the Sony SteadyShot system does.

I think we call a draw here.

Whilst the Sony system offers significantly more native lenses for photographers looking to invest in a new system, the FTZ adapter means the Z6 isn’t overly restricted and will be of particular interest to those Nikon shooters thinking of switching. Add to that the larger Z mount and there’s some exciting lens possibilities on the horizon with the new Nikon system that I’m sure the 3rd party manufacturers will be keen to explore in due course.

Continuous shooting

For high-speed continuous shooting the Nikon Z6 offers 12fps, capturing 12-bit RAW, JPEG or TIFF files recorded in Continuous H extended mode. That’s a couple of more frame per second compared to the Sony A7 III at 10fps, so the Nikon wins, but in reality both are perfectly adequate for most high-speed shooting.

LCD Screen

The Nikon Z6 features a tilting 3.2-inch 2.1m-dot touch-screen LCD, compared to the slightly smaller, lower resolution, 3.0-inch 921k-dot touch-screen LCD on the A7 III, so a win here for Nikon.


Video is another key selling point for Sony mirrorless cameras, with the A7 III offering 4K at 30p, as well as full HD 1080/120p capture for super slow motion effect in post-production. For serious videographers the latest Sony mirrorless cameras also offer picture profiles for capturing LOG and HLG footage for improved colour grading and dynamic range in editing. There’s microphone and headphone jacks, zebra warnings for exposure, focus peaking aids and good autofocus, with tap-to-track controls.

Historically video hasn’t been a strong point for Nikon, but the company understands the importance of it, particularly in the mirrorless space with lots of multi-media creators preferring this format. The Z6 supports 4K at 30p and full HD 1080 at 120p, so the same as the Sony, but with full-pixel read-out promising improved sharpness. Recording in Nikon N-log profile for improved colour grading is also possible, with 10-bit HDMI output to an external recording device, but not internally to the QXD card.

Nikon Z6 vs Sony A7 III


The new Z series is important for Nikon as it looks to take back its crown as the number 1 full frame camera manufacturer. Developing the new Z lens mount is a bold move that underlines the aspirations it has for full frame mirrorless cameras going forward.

First generation iterations of any product usually have some kinks to iron out. Whilst we might find that’s the case during a full test, Nikon’s vast heritage and experience in camera and lens design means I think it’s really hit the ground running with the Z6. The promise of a f/0.95 lens is an exciting development for creative photography and the FTZ adapter means existing Nikon shooters can switch immediately and retain all their expensive F mount lenses.

The big and bright EVF is a joy to use and offers tech advantages of face detection autofocus, focus peaking, info overlay and instant image review all without moving the camera away from your eye.

The lack of a battery grip initially and only a single QXD card slot aren’t ideal and may deter some more seasoned pros from switching initially, but those minor gripes aside the Z6 is a stunning introduction to the full frame mirrorless market for Nikon. With more big players entering this space it can only drive innovation, specs and performance of mirrorless cameras forward and it’ll be interesting to see how Sony responds and what Canon comes up.

Exciting times.

Nikon Z6 vs Sony A7 III
Article Name
Nikon Z6 vs Sony A7 III
The most logical competition for the Nikon Z6 is the Sony A7 III, after shooting with both we take a look at how they compare
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Camera Jabber
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