Sony FCB camera block
The anti-shake function of the camera module has become one of the key technologies to improve the quality of capture. The anti-shake technology of the camera core module is mainly divided into optical anti-shake and electronic anti-shake. But why do SONY FCB HD and 4K autofocus camera core modules all use electronic anti-shake technology? Instead of using optical anti-shake technology?
As an official authorized distributor of SONY (China) and a secondary development solution for high-definition video products, Danny Wong, senior engineer of Xuan Zhan Technology, mainly analyzes this reason for users from their anti-shake principles and advantages.
First, optical anti-shake
Principle: The core of optical shake prevention is to physically move the camera’s CMOS sensor to counteract shake. This technology often relies on built-in micro motors that can quickly adjust the position of the sensor when shaking is detected, thus keeping the picture stable.
Advantage: The advantage of optical stabilization is that it does not reduce the resolution of the picture, nor does it crop pixels, so it performs particularly well under low-frequency jitter (such as slight shaking when shooting handheld).
Disadvantages: However, optical stabilization is limited by its high cost and limited effectiveness in slightly higher frequency jitter environments.
Second, electronic anti-shake
Principle: Different from optical anti-shake, electronic anti-shake is to intercept a part of the screen through a software algorithm, and through the rest of the jitter compensation, to offset the jitter.
Advantages: This method eliminates the need for costly jitter components and complex mechanical structures, significantly reducing component and production costs.
Disadvantages: The disadvantage of electronic stabilization is that it needs to crop part of the picture, which may reduce the resolution of the picture.
Since electronic anti-shake has the significant advantage of low cost, it can effectively reduce the comprehensive cost of the camera core module, in view of this, SONY through a series of ways to solve the problem that the cropping screen may reduce the resolution:
1. Advanced software algorithms
The electronic anti-shake technology of SONY’s autofocus camera core module is mainly realized through the built-in gyroscope sensor and high-performance image processing chip, which can detect and compensate the picture shake in real time. For example, the SONY FCB-EV9520L and FCB-9500 series (including FCB-EW9500H, FCB-EV9500M and FCB-EV9500L three models) provide “Super” and “Super+” two anti-shake modes, respectively, suitable for different intensity of jailing environments. This flexible anti-shake mode switch ensures a clear and stable picture in a variety of complex scenes.
2. Wide correction area
SONY’s electronic anti-shake technology takes advantage of the wide correction area of the high pixel sensor to reduce image shake more effectively. For example, the FCB-EW9500H and FCB-ER9500 provide a large jitter compensation space through the image sensor of 4 and 8 megapixels respectively, which can maintain the sharpness of the image even in the environment of intense jitter.
3, multi-dimensional anti-shake ability
Compared with optical buffeting, electronic buffeting technology can not only deal with horizontal and vertical buffeting, but also effectively compensate for rotational buffeting. This multi-dimensional anti-shake capability enables SONY’s Autofocus camera modules to perform well in complex environments, such as drones, ships, Bridges, or vehicle-mounted surveillance, where electronic anti-shake technology can significantly reduce image blurring due to mechanical vibration or environmental factors.
4. High resolution imaging quality
SONY’s Full HD and 4K autofocus camera modules, with their superior high-resolution image quality, crop only a small percentage of the picture even when performing shake compensation, with almost no impact on overall picture integrity and sharpness. This efficient jitter compensation technology, combined with its large sensitive area and high pixel sensor, ensures stable and high-quality images, even in complex environments.
Sum up
The electronic anti-shake technology of the SONY autofocus camera module not only does not reduce the resolution because of the picture cropping, but also through advanced software algorithms, wide correction area and multi-dimensional anti-shake ability, it can more effectively reduce the image dithering blur in the environment of intense shaking and twisting, and maintain the stability and clarity of the picture.