There are still some differences between 6S and 6S Plus, that is, 6S has no optical image stabilization, while 6S Plus has this function: optical image stabilization (OIS) technology.
The addition of OIS is very helpful to the camera, which can not only bring more light (especially when the light is dark), but also increase the stability of shooting video images. Now foreign users use the contrast videos taken by 6S and 6S Plus to illustrate this problem.
OIS is the abbreviation of optical image stabilization system. First of all, it should include a gyroscope that can sense hand shake, which measures the camera tilt angle caused by hand shake, and then the system predicts the image offset caused by tilt according to this angle, and then the system controls the lens to translate relative to the image sensor to generate image offset with the same size and opposite direction, so as to offset the image offset caused by hand shake and ensure that the camera can still maintain image stability in the hand shake environment.
Apple's patent display application shows: "One specific application of the invention is the actuator module suitable for cameras, especially small cameras. The actuator module can introduce some mechanisms to provide auto-focusing function and optical image stabilization function. Applying autofocus mechanism and optical anti-shake mechanism to a single actuator module means that this actuator module can adjust the position of the lens relative to the image sensor from five directions (or five degrees of freedom). Usually, the lens can move in at least three different directions and rotate in at least two different directions. "