The choice of auto focus value for an image is the key factor to auto focus system of digital camera.

图像自动聚焦算法聚焦值的选择是数字相机自动聚焦系统的关键问题。

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Currently, Micro-Auto Focus system has three main solutions- Stepping Motor, VCM and Piezo .

现今微型化自动对焦系统有三大主要解决方案-步进马达，音圈马达及压电材料。

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The other important work of this paper is that we propose and implement a digital auto-focus system.

本文的另一个主要工作就是提出并实现了一种数字式的调焦系统。

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It has a more refined auto-focus system so it can acquire the primary subject a little faster.

ENGADGET: The Engadget Interview: Steve Heiner, General Manager, Digital SLR Systems, Nikon

To support the ample sensitivity of the new camera's sensor, the EOS 6D camera's Auto Focus (AF) system includes a newly-developed 11-point AF sensor featuring a high-precision center cross-type point with an exceptional EV -3 sensitivity rating for accurate focusing even in extremely low-light conditions.

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