Science and technology are making rapid progress. Anti-shake or Image Stabilization, which was only available in high-end cameras, has become the basic equipment of most cameras. There are two types of technology: optical image stabilization (OIS) and electronic image stabilization (EIS). What are the differences between these two technologies?
In simple terms, optical image stabilization is based on a set of built-in lenses or photosensitive elements to reverse the horizontal or vertical movement of the camera, as shown below:
Electronic image stabilization is to increase the ISO sensitivity to make the shutter faster or use software to make blur corrections.
Optical or Electronic?
Generally speaking, the optical image stabilization has not undergone a large number of software corrections, and the image quality will only decrease slightly. However, the electronic image stabilization has a significant increase in noise due to the increase in ISO value or the use of software corrections. Shock is truly anti-shake. When buying a camera, you should choose the well-known optical anti-shake.
Difference between MODE1 and MODE2 with optical image stabilization
In optical anti-shake, there are often choices of MODE1 and MODE2. The differences are as follows:
[Updated on 15/5/2009] Thanks to Redman and Jackywong for their guidance:
MODE1: The anti-shake function works only when you press the shutter halfway to focus. The advantage is that it saves power and the disadvantage is that it is slow. Corrected all-round vibration.
MODE2: The anti-shake function runs for a long time, so it is more suitable for some photos that need to be captured at the right time (such as shooting birds), but it consumes more power. Only correct the vibration in the up and down direction for horizontal focus tracking and “Pan Mirror” photography.