Sony a77 II vs Sony a7S

This is a full comparison between the cameras Sony a77 II and Sony a7S. We compare them by looking at the categories you see below.

Sony a77 II

Sony a7S

Manufacturing

These cameras are both manufactured by Sony.

These two camera models were both released 2014.

Camera	Released
Sony a77 II	2014
Sony a7S	2014

Type of camera

Sensors / crop factor

These cameras have different sensors. Sony a77 II has a "Sony APS-C"-sensor while Sony a7S 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 a77 II	75 mm Sony APS-C sensor Crop factor/focal length multiplier by * 1.5
Sony a7S	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

Sony a77 II has a 24 MP (Megapixels) resolution while Sony a7S has 12 MP. If we break down this in more detail this is the data behind the numbers:

Camera	Megapixels
Sony a77 II	24 MP 24000000 pixels 6000 x 4000
Sony a7S	12 MP 12007680 pixels 4240 x 2832

Sony a77 II has a 100 % larger resolution than Sony a7S. 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 a7S has a larger ISO-range than Sony a77 II. Sony a7S has an ISO range that stretches from 10 to 102400 while Sony a77 II has 100 to 51200.

Camera	ISO Range
Sony a77 II	100-51200
Sony a7S	10-102400

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 a77 II
Lens compatibility chart for Sony a7S

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Sony a77 II can shoot up to 12 pictures per seconds and Sony a7S can shoot up to 5 pictures per seconds.

Camera	FPS (Frames per second)
Sony a77 II	12
Sony a7S	5

Ability to record movies

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

In this case, both Sony a77 II and Sony a7S 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 a77 II weighs 647 gr (equal to 1.43 lb) which is 32% heavier than Sony a7S and its 489 gr (or 1.08 lb).

Camera	Weight
Sony a77 II	647 gr 1.43 lb
Sony a7S	489 gr 1.08 lb