Common Features of Nikon Z6 and Sony A7 III:
- Full-frame sensors
- BSI (Back-illuminated) sensors with optical low-pass filter
- 24MP resolution (24.5 for Z6, 24.2 for A7 III)
- ISO 100-51200 (expandable to 204800)
- 5-axis sensor stabilization with 5.0Ev compensation (CIPA standard)
- First curtain electronic shutter and electronic/silent shutter
- 4K video recording up to 30 frames/second and 100 Mb/second with full-frame readout in full-frame mode
- 120fps at 1080p with slow-motion capability in the camera
- Wifi and Bluetooth connectivity
- Microphone input, headphone output, USB C port, HDMI (Mini Type C on Z6, Micro Type D on A7).
Differences between Nikon Z6 and Sony A7 III:
Design


Video Shooting
The Sony A7 III boasts excellent video shooting capabilities, featuring 4K resolution and 1080p HD at 120 frames per second. Nikon also offers 4K video shooting and 120 fps – with upgraded 10-bit video at 4:2:2 via HDMI, compared to Sony's 8-bit at 4:2:2.

Both cameras are equipped with touch-sensitive LCD screens, the Nikon Z6 featuring a 3.2-inch touchscreen LCD and the Sony A7 III a 3.0-inch screen. Additionally, the Nikon Z6 has a higher resolution than the Sony A7 III (2,100,000 dots vs. 921,600 dots). This is a notable advantage of the Nikon Z6 over its competitor.

The EVF on the Z6 left me with a very positive first impression. It boasts excellent resolution thanks to its 3.690k OLED panel and large magnification of 0.8x. The A7 III has a lower resolution (2.360k dots) and slightly lower magnification at 0.78x, but a slightly longer eye point (23mm vs. 21mm). Both share a refresh rate of around 60 frames per second.
Battery Life
Regarding battery life, Sony has upgraded the battery life on its Sony A7 mark 3, thus Sony has a much better battery life compared to the Nikon Z6. The battery life of the Nikon Z6 is rated at 330 shots per CIPA standards. Meanwhile, the Sony A7 III is officially rated at around 710 shots.
Storage/Memory Cards
In recent years, Nikon has transitioned to XQD cards, with the Z6 and Z7 being their first main cameras offered with XQD as the sole option. Unfortunately, both cameras only have a single XQD slot. Sony has two SD card slots, but only one of them is compatible with UHS-II. XQD is currently faster technology, with write speeds listed at 400MB/s, whereas UHS-II cards max out around 300MB/s. Exchange rates may vary in the real world.
Lenses

Commitment
The introduction of the Sony Alpha A7 III camera can be said to have created quite a significant pressure on competing rivals Canon and Nikon. With a similar price point, but the Sony A7m3 possesses many advantages in terms of configuration such as a 24MP sensor, 10 fps continuous shooting, 693 AF points, convenient Eye AF technology, Silent Shooting for quiet captures, 4K video recording, and 6K full pixel readout. However, the Nikon Z6 is also competitive with its high speed and impressive image processing capabilities in low-light environments. The Nikon Z6 will be a formidable competitor in the camera market today.