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Here's what a VPN can't protect you from (but you need to use it)

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What is Optical Image Stabilization (OIS)?

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What is Optical Image Stabilization (OIS)?

We see the label "OIS" more and more often in the specifications of smartphones, so some people don't really understand what it is, what it does, and what does it mean to the end-user?

OIS is an abbreviation of "Optical Image Stabilization", which in translation would mean "Optical Image Stabilization", and what it does - stabilizes the image from the camera.

Image stabilization technology is present in newer smart devices and aims to reduce blurry images caused by hand tremors. This technology is divided into two parts: hardware and software solutions.

The hardware solution consists of mechanically moving the camera in its case in the opposite direction from moving the phone (i.e., the surrounding case that is attached to the phone). This keeps the camera still and the image clear. These movements are reduced thanks to motion sensors and gyroscopic technology. However, since the camera is small and the distance between the camera and its body is quite small, the camera can reduce a small movement, which is somewhat enough to just shake your hand. That is why some better and more expensive devices have a software solution in addition to the hardware one.

Hardware image stabilization (youtube.com)
Hardware image stabilization (youtube.com)

Digital image stabilization is based on image corrections in the software itself. Here, the image is stabilized by tracking the movements of the phone via a gyroscopic sensor and the software moves the image in the opposite direction from moving the phone and cuts the pixels that go out of the frame, thus creating the impression that the image is in place.

Some devices have both optical and digital stabilization, which is the best solution, but some only digital, which is not so efficient. In general, as an end-user, it is best to look next to "Image Stabilization" to see if it says optical, digital, or optical and digital.

This technology is certainly very useful and if you like to take frequent pictures, I recommend looking for devices that have OIS.

Nexus 6P
Nexus 6P

In these pictures you can see the difference between the Nexus 6P (above) which does not have stabilization and the Note 5 (below) which has:

Note 5
Note 5

I also recommend this video where it is presented more vividly:

Source: personal experience, androidauthority.com

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