Nikon recently launched its new camera mount called Z-mount, as well as two mirrorless cameras – Nikon Z7 and Z6. These cameras are very comparable to A7RIII and A7III from Sony, and in this is exactly why we decided to compare the high-end cameras from these manufacturers in this article – the Nikon Z7 with the A7RIII.
Firstly, let’s take a look at some specs these cameras have in common, and then we’ll compare the differences. Both cameras have:
- Full-frame sensor with backside illumination (BSI)
- 5-axis in-body image stabilization
- 4K video recording at up to 30 fps
- 1080p video recording at up to 120fps
- EVF with 3.6M dots
- Weather-sealed body
- Headphone and microphone jack
- Wi-Fi and Bluetooth
- USB charging
Now that we’ve seen what they have in common, let’s take a look at the main differences between Nikon Z7 and Sony A7RIII:
We’ll start with the most obvious difference – the camera mount. The Z-mount is definitely larger than Sony’s E-mount (55mm vs 46mm). Nikon says that this will help them make some very interesting lenses, similar to the upcoming Noct 58mm f/0.95.
Speaking of lenses, the main problem with Z-mount right now is the fact there are only a handful of lenses Nikon is going to release in the beginning. One of them is the “kit” lens – Nikkor Z 24-70 f/4. The Japanese company will release Nikkor Z 35mm f/1.8 and 50mm f/1.8 soon as well. In 2019, they plan on releasing aforementioned Noct 58mm f/0.95 along with 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).
On the other hand, Sony already released 24 E-mount lenses for their full-frame mirrorless cameras, and there are also many other compatible lenses on the market from manufacturers like Sigma, Rokinon and others.
Like we previously mentioned, both cameras have a full-frame sensor with backside illumination. However, the resolution is somewhat different. Nikon Z7 has a 45.7MP sensor, while Sony A7RIII has 42.4MP.
The Z7 starts from a native ISO of 64 and goes up to 25600, while the A7RIII starts from 100 and goes up to 32000.
Nikon Z7 features 493 phase detection points that cover nearly 90 percent of the sensor, while the A7RIII has 425 contrast detection points and 399 phase detection points that cover 68 percent of the sensor. With that said, Sony’s autofocus is still better in almost all cases. The only thing Nikon Z7 has going for it at the moment is the 90 percent coverage of the sensor.
Body Size and Weight
Nikon Z7 has a somewhat bulkier body than the Sony A7RIII, and some people will actually prefer it for the better grip. When it comes to weight, these cameras aren’t too different. Nikon Z7 comes in at 1.49 lb (675 grams) vs 1.45 lb (657 grams) on the Sony A7RIII.
Sony A7RIII edges out in this department with 10 fps, compared to 9fps on the Nikon Z7.
Although both cameras have nearly identical video specs, there is one small difference if you’re recording video externally (using an external recorder). In this case, Nikon Z7 can output 10-bit footage, while the Sony can only do 8-bit. This is an important difference for serious videographers.
Nikon Z7 features just one XQD memory card slot that has somewhat faster write/read speeds than what you get with UHS-II cards, but the difference isn’t that big. Keep in mind that XQD cards are more expensive and harder to find than your typical SD cards. Here are some of the best XQD memory cards for Nikon Z7.
In comparison, the A7RIII has two card slots, one of which supports speedy UHS-II cards, while the other one is limited to UHS-I cards. If you’re looking for an SD memory card that would pair well with this camera, check out our guide on best SD cards for Sony A7RIII.
Nikon Z7 has a slightly larger and better rear screen than the A7RIII. The Z7 features a 3.2-inch touchscreen display with 2.1 million dots, while the Sony A7RIII has a 3.0-inch touchscreen display with 1.44 million dots.
When it comes to battery life, the A7RIII easily takes the win. Nikon Z7 is rated at about 330 shots, while the A7RIII is rated at 650 shots, which is almost twice as much. Keep in mind that many users report even higher values for the A7RIII.
Although the price difference isn’t huge, it’s there. Retails prices set by these companies are $3,399.95 for the Z7 and $3,199.99 for the A7RIII. Keep in mind that A7RIII is an older camera than Z7 and that some camera stores are already offering discounts on it, but aforementioned prices are recommended by manufacturers.
We really hope this article helped you understand what specs these two cameras have in common as well as the main differences between them.