What is OIS, EIS, HIS anti-shake technology? What’s different?

Anti-shake technology on the phone helps images not to be blurred and transmits content more clearly. So let Tnhelearning.edu.vn help you better understand 3 current anti-shake technologies: OIS, EIS, HIS? What’s the difference between them?

What is anti-vibration technology? Why is it so important?

Anti-shake technology is gradually becoming popular on any camera on a smartphone today, it helps to make your images when shooting and recording more stable .

In terms of operating mechanism, the camera’s shutter must be opened to capture light. During this time, if even the slightest movement occurs, it becomes the cause of your image loss when shooting or recording, especially in low light conditions (the shutter needs to be opened). out for a certain length of time to capture enough light).

Therefore, anti-shake technology is a very important part of image focus , especially HDR mode and night mode commonly used on smartphones.

Learn about anti-vibration technologies

Currently, there are 3 anti-shake technologies equipped on phone cameras as follows:

2.1. OIS . Optical Image Stabilization

OIS ( Optical Image Stabilization ) is an anti-shake technology that uses the gyroscope of a mechatronic system (MEMS), to detect motion and adjust the camera system in the direction you want.

Example: You hold your smartphone and your hand moves slightly to the left side, then the OIS system will take over this and move the camera slightly to the right.

This OIS optical image stabilization uses a full sensor readout to capture images without any cropping, and video-recorded images are distortion-free and much more natural. much without the need to use additional effects for the video.

The cost of building good OIS hardware is usually not cheap, so of course you have to spend a large amount of money to own a phone equipped with OIS. This technology is very useful for you when shooting or taking pictures in low light conditions .

When the device has OIS, slight vibrations will be completely eliminated, resulting in sharper images. This is similar when you use a telephoto lens camera.

However, OIS still encounters some photo errors or application errors when it is moved by the camera module. In addition, the hardware that meets OIS in the device may increase the thickness of the camera , or consume more battery power when used.

Some phones have OIS anti-shake technology such as: iPhone (iPhone X, iPhone 8 Plus), Samsung Galaxy Note 8,,….

2.2 Electronic Stabilization EIS

EIS ( Electric Image Stabilization ) is considered a technology that is not inferior to what OIS has tried to do, it is not composed of physical hardware (gyroscope) but works by using the phone accelerometer. to detect small movements . At this point, the camera software will automatically process those movements, to produce the clearest images.

In other words, to deal with shaky images, the EIS must quickly capture the images before they are shaken. At the same time, before the images are transferred to memory, the EIS is forced to re-record multiple times – these images are used as buffer images to replace the shaky, blurred pixels during shooting or recording. video.

• For image quality when shooting , EIS plays a very important role when you are shooting in HDR mode or night mode , as it will help you capture many images in a short period of time .
• For picture quality when recording video , the EIS will quickly find a high-contrast pixel, and then try to keep it in the same part of the frame (anti-shake lock). For example, the EIS works mechanically to detect the subject of an image and immediately locks the stabilized image within a certain frame . As a result, the resulting images processed by EIS sometimes look unnatural.

Electronic anti-shake technology EIS also has some notable disadvantages, such as the need to record images multiple times, and it needs to depend on the camera’s resolution, so sometimes the image processing. After shaking, the image resolution may be reduced.

Some phones have integrated EIS technology such as: Sony Xperia Z, Google Pixel 2, Pixel 2 XL, ….

2.3. HIS . Hybrid Stabilizer

As its name suggests, HIS ( Hybrid Image Stabilization ) is a combination of both OIS and EIS . This is a comprehensive anti-vibration technology solution. Since, OIS takes care of providing the underlying hardware for stabilization and EIS takes care of smoothing for images and video footage .

It is because of the integration of OIS technology that the images processed by EIS are not cropped too much nor the surrounding buffers of the image edges become smaller, for perfect image quality. .

In addition, OIS will minimize factors that cause camera shake, while EIS will support image stabilization with HDR mechanism for night photography.

You can compare the results taken from an Android phone (Google’s Pixel 2) using a hybrid OIS and EIS system:

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When buying a phone, which product should I choose with anti-vibration technology?

Almost, today’s smartphones are equipped with EIS technology on the camera, besides most also have integrated OIS technology. So when buying a phone, which product should you choose with anti-vibration technology?

Depending on your needs and budget , you can choose EIS, OIS or HIS anti-shake technology. However, if you are considering choosing between OIS and EIS, then Tnhelearning.edu.vn thinks you should prioritize OIS technology . Because it contributes to making the image more realistic, especially for an ultra-wide lens equipped with OIS, it will bring a wider field of view.

And if you choose to use HIS technology, it is too good , because it has a great combination of advantages of both OIS and EIS.

With the above information, Tnhelearning.edu.vn hopes to help you better understand the OIS, EIS and HIS anti-shake technologies on phones today, as well as know what is the difference between those technologies.