Sony a9 III vs Nikon Z8

This is a full comparison between the cameras Sony a9 III and Nikon Z8. We compare them by looking at the categories you see below.

Sony a9 III

Nikon Z8

Manufacturing

Sony a9 III is manufacturered by Sony but Nikon Z8 is from Nikon. Both Sony and Nikon are well known brands though.

These two camera models were both released 2023.

Camera	Released
Sony a9 III	2023
Nikon Z8	2023

Type of camera

Both these cameras are Mirrorless cameras. No difference there.

Sensors / crop factor

Even though the camera sensors might be called differently they are both considered Full frame which means that the focal length of the lenses is not affected. There is no crop factor on any of these cameras and sensors.

Camera	Focal length, 50mm f/1.8 **
Sony a9 III	50 mm Full-frame sensor No crop factor/focal length multiplier
Nikon Z8	50 mm Full-frame sensor No crop factor/focal length multiplier

** Experienced focal length when using a lens such as a common "50mm f/1.8"

Learn more about crop factor and focal length multiplier here:
Camera selection can affect the focal length (Sony)
Camera selection can affect the focal length (Nikon)

Resolution

Sony a9 III has a 25,2 MP (Megapixels) resolution while Nikon Z8 has 46 MP. If we break down this in more detail this is the data behind the numbers:

Camera	Megapixels
Sony a9 III	25,2 MP 24000000 pixels 6000 x 4000
Nikon Z8	46 MP 45441024 pixels 8256 x 5504

Nikon Z8 has a 89 % larger resolution than Sony a9 III. This could give you more details in the picture but also a possibility to crop more in the pictures, afterward while editing the pictures, if needed that is.

ISO range

Nikon Z8 has a larger ISO-range than Sony a9 III. Nikon Z8 has an ISO range that stretches from 32 to 102400 while Sony a9 III has 125 to 51200.

Camera	ISO Range
Sony a9 III	125-51200
Nikon Z8	32-102400

Autofocus and lens compatibility

Both of these cameras have a built-in autofocus motor. Some lenses, that support autofocus, do not have an autofocus motor of their own but this won't cause any problems with these two cameras.

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Sony a9 III
Lens compatibility chart for Nikon Z8

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Sony a9 III can shoot up to 120 pictures per seconds and Nikon Z8 can shoot up to 30 pictures per seconds.

Camera	FPS (Frames per second)
Sony a9 III	120
Nikon Z8	30

Ability to record movies

It is becoming more and more popular to record movies with digital cameras.

In this case, both Sony a9 III and Nikon Z8 can shoot movies.

Weight

The weight of the camera can be an extremely important factor, especially if the camera is about to be used, or carried around, for several hours at a time.

Nikon Z8 weighs 910 gr (equal to 2.01 lb) which is 47% heavier than Sony a9 III and its 617 gr (or 1.36 lb).

Camera	Weight
Sony a9 III	617 gr 1.36 lb
Nikon Z8	910 gr 2.01 lb