Sony a7R IIIA vs Nikon D750

This is a full comparison between the cameras Sony a7R IIIA and Nikon D750. We compare them by looking at the categories you see below.

Sony a7R IIIA

Nikon D750

Manufacturing

Sony a7R IIIA is manufacturered by Sony but Nikon D750 is from Nikon. Both Sony and Nikon are well known brands though.

Sony a7R IIIA were released 2021 and Nikon D750 was released 2014. That is a 7 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera	Released
Sony a7R IIIA	2021
Nikon D750	2014

Type of camera

Sony a7R IIIA is a Mirrorless camera while Nikon D750 is a DSLR camera. More information about their differences will come soon.

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 a7R IIIA	50 mm Full-frame sensor No crop factor/focal length multiplier
Nikon D750	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 a7R IIIA has a 42 MP (Megapixels) resolution while Nikon D750 has 24 MP. If we break down this in more detail this is the data behind the numbers:

Camera	Megapixels
Sony a7R IIIA	42 MP 42177408 pixels 7952 x 5304
Nikon D750	24 MP 24160256 pixels 6016 x 4016

Sony a7R IIIA has a 75 % larger resolution than Nikon D750. 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

Sony a7R IIIA has a larger ISO-range than Nikon D750. Sony a7R IIIA has an ISO range that stretches from 100 to 32000 while Nikon D750 has 100 to 12800.

Camera	ISO Range
Sony a7R IIIA	100-32000
Nikon D750	100-12800

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 a7R IIIA
Lens compatibility chart for Nikon D750

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Sony a7R IIIA can shoot up to 10 pictures per seconds and Nikon D750 can shoot up to 6,5 pictures per seconds.

Camera	FPS (Frames per second)
Sony a7R IIIA	10
Nikon D750	6,5

Ability to record movies

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

In this case, both Sony a7R IIIA and Nikon D750 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 D750 weighs 750 gr (equal to 1.65 lb) which is 14% heavier than Sony a7R IIIA and its 657 gr (or 1.45 lb).

Camera	Weight
Sony a7R IIIA	657 gr 1.45 lb
Nikon D750	750 gr 1.65 lb