How OIS stabilize images?

OIS stands for Optical Image Stabilization and refers to a camera technology used in smartphones and other photography equipment to reduce blurring in images caused by shaky hands or unstable platforms. It works by physically compensating for camera movement, providing a stable base for the lens to capture an image.

How OIS stabilize images?

Why OIS is required? 

With the increasing popularity of smartphone photography, the demand for better image quality has also grown. However, even with advanced sensors and lenses, it can be challenging to capture a clear, blur-free image in low light conditions or when the camera is not being held steady. This is where OIS comes in – it helps to reduce the effects of camera shake, providing sharp, clear images even in challenging conditions.

How OIS is implemented in a Mobile Phone? 

In a smartphone, OIS is typically implemented using a small motor that physically moves the lens to compensate for the camera shake. When the camera detects movement, the motor will move the lens in the opposite direction to counteract the shake, keeping the image in focus. Some smartphones also use a combination of OIS and electronic image stabilization (EIS) to achieve even better results.

How OIS works?

OIS works by physically compensating for camera movement. It uses a small motor to move the lens in the opposite direction of the camera shake, keeping the image in focus. This helps to reduce the blur that would otherwise be present in the image, ensuring that it is captured and without distortion.

When the camera is activated, the OIS system uses sensors to detect any movement or shake. The system then activates the motor, which moves the lens to counteract the shake. This process happens quickly and smoothly, allowing the camera to capture an image that is in focus and free of blur.

There are two main types of OIS systems: linear OIS and angular OIS. Linear OIS is used in compact cameras and smartphones, while angular OIS is used in high-end cameras and professional equipment. The former uses a motor to move the lens along a single axis, while the latter uses two motors to move the lens along two separate axes.

In addition to the physical OIS system, some cameras also use electronic image stabilization (EIS) to further reduce camera shake. EIS works by analyzing the image data and adjusting it electronically to compensate for camera movement. When used in conjunction with OIS, the combination of these two technologies can result in even better image quality, especially in challenging conditions.

The Summary 

In conclusion, OIS is a crucial technology for anyone who wants to capture high-quality images with their smartphone camera. It works by physically compensating for camera movement, providing a stable base for the lens to capture an image. OIS is implemented in a smartphone using a small motor that moves the lens to counteract camera shake, ensuring that the image is captured and without blur. With OIS technology, even shaky hands or unsteady platforms will not affect the quality of the final image.