Sony a6100 vs Sony a7 III

This is a full comparison between the cameras Sony a6100 and Sony a7 III. We compare them by looking at the categories you see below.

Sony a6100

Sony a7 III

Manufacturing

These cameras are both manufactured by Sony.

Sony a6100 were released 2019 and Sony a7 III was released 2018. That is a 1 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera	Released
Sony a6100	2019
Sony a7 III	2018

Type of camera

Both these cameras are Mirrorless cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Sony a6100 has a "Sony APS-C"-sensor while Sony a7 III has a "Sony Full Frame"-sensor, and their difference in sensors will also affect the crop factor and experience focal length. See the table below.

Camera	Focal length, 50mm f/1.8 **
Sony a6100	75 mm Sony APS-C sensor Crop factor/focal length multiplier by * 1.5
Sony a7 III	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)

Resolution

Both these cameras have the exact same resolution. Sony a6100 has a 24 MP (Megapixels) resolution while Sony a7 III has 24 MP. If we break down this in more detail this is the data behind the numbers:

Camera	Megapixels
Sony a6100	24 MP 24000000 pixels 6000 x 4000
Sony a7 III	24 MP 24000000 pixels 6000 x 4000

ISO range

Sony a7 III has a larger ISO-range than Sony a6100. Sony a7 III has an ISO range that stretches from 100 to 51200 while Sony a6100 has 100 to 32000.

Camera	ISO Range
Sony a6100	100-32000
Sony a7 III	100-51200

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 a6100
Lens compatibility chart for Sony a7 III

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Sony a6100 can shoot up to 11 pictures per seconds and Sony a7 III can shoot up to 10 pictures per seconds.

Camera	FPS (Frames per second)
Sony a6100	11
Sony a7 III	10

Ability to record movies

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

In this case, both Sony a6100 and Sony a7 III 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.

Sony a7 III weighs 650 gr (equal to 1.43 lb) which is 64% heavier than Sony a6100 and its 396 gr (or 0.87 lb).

Camera	Weight
Sony a6100	396 gr 0.87 lb
Sony a7 III	650 gr 1.43 lb