Sony a33 vs Sony a9 II

This is a full comparison between the cameras Sony a33 and Sony a9 II. We compare them by looking at the categories you see below.

Sony a33

Sony a9 II

Manufacturing

These cameras are both manufactured by Sony.

Sony a33 were released 2010 and Sony a9 II was released 2019. That is a 9 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera	Released
Sony a33	2010
Sony a9 II	2019

Type of camera

Sensors / crop factor

These cameras have different sensors. Sony a33 has a "Sony APS-C"-sensor while Sony a9 II 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 a33	75 mm Sony APS-C sensor Crop factor/focal length multiplier by * 1.5
Sony a9 II	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 a33 has a 14 MP (Megapixels) resolution while Sony a9 II has 24 MP. If we break down this in more detail this is the data behind the numbers:

Camera	Megapixels
Sony a33	14 MP 14033152 pixels 4592 x 3056
Sony a9 II	24 MP 24000000 pixels 6000 x 4000

Sony a9 II has a 71 % larger resolution than Sony a33. 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 a9 II has a larger ISO-range than Sony a33. Sony a9 II has an ISO range that stretches from 100 to 51200 while Sony a33 has 100 to 12800.

Camera	ISO Range
Sony a33	100-12800
Sony a9 II	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 a33
Lens compatibility chart for Sony a9 II

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Sony a33 can shoot up to 7 pictures per seconds and Sony a9 II can shoot up to 20 pictures per seconds.

Camera	FPS (Frames per second)
Sony a33	7
Sony a9 II	20

Ability to record movies

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

In this case, both Sony a33 and Sony a9 II 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 a9 II weighs 678 gr (equal to 1.49 lb) which is 36% heavier than Sony a33 and its 500 gr (or 1.1 lb).

Camera	Weight
Sony a33	500 gr 1.1 lb
Sony a9 II	678 gr 1.49 lb